NOCO Genius BOOST MAX GB251+ Technical manual

User Guide & Warranty
DANGER
READ AND UNDERSTAND ALL SAFETY INFORMATION BEFORE USING THIS PRODUCT.
Failure to follow these safety instructions may result in ELECTRICAL SHOCK, EXPLOSION,
FIRE, which may result in a SERIOUS INJURY, DEATH, or PROPERTY DAMAGE.
Electrical Shock. Product is an electrical device that can shock and cause serious injury. Do not cut
power cords. Do not submerge in water or get wet.
Explosion. Unmonitored, incompatible, or damaged batteries can explode if used with product. Do not
leave product unattended while in use. Do not attempt to jump start a damaged or frozen battery. Use
product only with batteries of recommended voltage. Operate product in well ventilated areas.
Fire. Product is an electrical device that emits heat and is capable of causing burns. Do not cover
product. Do not smoke or use any source of electrical spark or fire when operating product. Keep
product away from combustible materials.
Eye Injury. Wear eye protection when operating product. Batteries can explode and cause flying debris.
Battery acid can cause eye and skin irritation. In the case of contamination of eyes or skin, flush aected
area with running clean water and contact poison control immediately.
Explosive Gases. Working in the vicinity of a lead-acid is dangerous. Batteries generate explosive
gases during normal battery operation. To reduce risk of battery explosion, follow all safety information
instructions and those published by the battery manufacturer and manufacturer of any equipment
intended to be used in the vicinity of battery. Review wcautionary markings on these products and
on engine.
For more information and
support visit:

Proposition 65. WARNING: This product can expose you to chemicals including lead and exhaust fumes, which are known to the
State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.
ca.gov. Personal Precaution. Only use product as intended. Someone should be within range of your voice or close enough to come to
your aid in case of emergency. Have a supply of clean water and soap nearby in the case of battery acid contamination. Wear complete eye
protection and protective clothing while working near a battery. Always wash hands after handling batteries and related materials. Do not
handle or wear any metal objects when working with batteries including; tools, watches or jewelry. If metal is dropped onto battery, it may
spark or create a short circuit resulting in electrical shock, fire, explosion which may result in injury, death or property damage. Minors. If
the product is intended by "Purchaser" to be used by a minor, purchasing adult agrees to provide detailed instructions and warnings to any
minor prior to use. Failure to do so is the sole responsibility of the "Purchaser," who agrees to indemnify NOCO for any unintended use or
misuse by a minor. Choking Hazard. Accessories may present a choking hazard to children. Do not leave children unattended with product
or any accessory. The product is not a toy. Handling. Handle product with care. The product can become damaged if impacted. Do not use
a damaged product, including, but not limited to, cracks to the casing or damaged cables. Do not use product with a damaged power cord.
Humidity and liquids may damage product. Do not handle product or any electrical components near any liquid. Store and operate product
Important Safety Warnings
CAUTION:
Manual Override Mode disables all safety measures. When used improperly and/or against our recommended use, it may result in injury
or death and will void your warranty. Risk of fire, explosion, and burns. Do not disassemble, crush, heat above 60ºC (140ºF) or incinerate.
This device is intended for temporary use outdoors and reasonable care should be exercised when using this device in wet conditions.
WARNING:
Do not overcharge the internal battery. See Instruction Manual. Do not smoke, strike a match, or cause a spark in the vicinity of the power
pack. Only charge the internal battery in a well ventilated area when not in use.
CAUTION:
Risk of Injury To Persons. Do not use this product if the power cord or the battery cables are damaged in any way. This device is not
intended for use in a commercial repair facility. This device is intended to be stored indoors when not in use. This device shall not be
stored or left outdoors when not in use.

EN
in dry locations. Do not operate product if it becomes wet. If product is already operating and becomes wet, disconnect it from the battery
and discontinue use immediately. Do not disconnect the product by pulling on the cables. Modifications.Do not attempt to alter, modify or
repair any part of the product. Disassembling product may cause injury, death or damage to property. If product becomes damaged,
malfunctions or comes in contact with any liquid, discontinue use, and contact NOCO. Any modifications to the product will void your
warranty. Accessories. This product is only approved for use with NOCO accessories. NOCO is not responsible for user safety or damage
when using accessories not approved by NOCO. Location. Prevent battery acid from coming in contact with the product. Do not operate
the product in a closed-in area or an area with restricted ventilation. Do not set a battery on top of product. Position cable leads to avoid
accidental damage by moving vehicle parts (including hoods and doors), moving engine parts (including fan blades, belts, and pulleys), or
what could become a hazard that may cause injury or death. Operating Temperature. This product is designed to work in ambient
temperatures between -20º C to 50º C. Do not operate outside of temperature ranges. Do not jump start a frozen battery. Discontinue use
of product immediately if the battery becomes excessively warm. Storage. Do not use or store your product in areas with high concentrations
of dust or airborne materials. Store your product on flat; secure surfaces so it's not prone to falling. Store your product in a dry location. The
storage temperature is -20ºC to +50ºC (0ºC ~ +25ºC daily average). Never exceed 80ºC under any condition. Compatibility. The product
is only compatible with 12-volt lead-acid battery systems only. Do not attempt to use product with any other type of battery. Jump starting
other battery chemistries may result in injury, death or property damage. Contact the battery manufacturer prior to attempting to jump start
the battery. Do not jump start a battery if you are unsure of the battery's specific chemistry or voltage. The Battery. The built-in lithium-ion
battery in the product should be replaced only by NOCO, and must be recycled or disposed of separately from household waste. Do not
attempt to replace the battery yourself and do not handle a damaged or leaking lithium-ion battery. Never dispose of battery in household
trash. Disposal of batteries in household trash is unlawful under state and federal environmental laws and regulations. Always take used
batteries to your local battery recycling center. If the product battery is excessively hot, emitting an odor, deformed, cut, or is experiencing or
demonstrating an abnormal occurrence, immediately stop all use and contact NOCO. Battery Charging. Charge the product with the
included 12VDC car charger or XGC4 wall charger. Do not use generic or third-party power adapters, as they may present a serious electrical
risk that can result in injury to person, Device, and property. Using damaged cables or chargers, or charging when moisture is present, can
result in electric shock. NOCO is not responsible for the user’s safety, damage to Device, or damage to property when using accessories or
power supplies that are not approved by NOCO. When using the XGC4 wall charger, make sure that the AC plug is fully inserted into the
adapter before you plug it into a power outlet. The power adapter may become warm during normal use, and prolonged skin contact may
cause bodily injury. Always allow adequate ventilation around the power adapter while in use. To ensure maximum battery life, avoid charging

your product for more than a week at a time, as overcharging may shorten battery life. Over time, an unused product will discharge and must
be recharged before use. Disconnect the product from power sources when not in use. Use the product only for their intended purposes.
Medical Devices. Product may emit electromagnetic fields. Product contains magnetic components which may interfere with pacemakers,
defibrilators, or other medical devises. These electromagnetic fields may interfere with pacemakers or other medical devices. Consult with
your physician prior to use if you have any medical device including pacemakers. If you suspect the product is interfering with a medical
device, stop using the product immediately and consult your physician. Medical Conditions. If you have any medical condition that you
believe could be aected by product, including but not limited to; seizures, blackouts, eyestrain or headaches, consult your physician prior
to use of product. The use of a integrated high-powered flashlight contains a light sensitivity hazard. Use of the light in Strobe Mode may
cause seizures in persons with photosensitive epilepsy, which may result in serious injury or death. Light. Staring directly into the light beam
or shine of the flashlight may result in permanent eye injury. The product is equipped with a high output LED pre-focused lamp that emits a
powerful beam at the highest setting. Cleaning. Power o the product before attempting any maintenance or cleaning. Clean and dry
product immediately if it comes in contact with liquid or any type of contaminant. Use a soft, lint-free (microfiber) cloth. Avoid getting moisture
in openings. Explosive Atmospheres. Obey all signs and instructions. Do not operate product in any area with a potentially explosive
atmosphere, including fueling areas or areas which contain chemicals or particles such as grain, dust or metal powders. High-
Consequence Activities. This product is not intended for use where the failure of the product could lead to injury, death or severe
environmental damage. Radio Frequency Interference. Product is designed, tested, and manufactured to comply with regulations
governing radio frequency emissions. Such emissions from the product can negatively aect the operation of other electronic equipment,
causing them to malfunction. Model Number: GB251This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation. NOTE: This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the
interference at his own expense.

EN
When recharging, the charge level of the internal battery is indicated by the Charge
LEDs. The LEDs will slowly pulse 'On' and 'O' and become solid until all four Charge
LEDs are on. When the battery is fully charged, the Green 100% LED will be solid, and
the 25%, 50% and 75% Charge LEDs will turn "O". From time to time, the Green
100% LED will pulse indicating maintenance charging is occuring.
How To Use
Step 1: Charge the GB251.
The GB251 comes partially charged out of the box and needs to be fully charged
prior to use. Connect the GB251 using the included 12V DC car charger or XGC4 wall
charger to the 12V IN port. The time to recharge a GB251 will dier based on the
discharge level and the power source used. Actual results may vary due to battery
conditions and level of discharge.
Recharge Time: Charger Rating:
8.5hr 56W
Step 2: Connect to the Battery.
Carefully read and understand the vehicle owner's manual on specific precautions and recommended methods for jump starting the
vehicle. Make sure to determine the voltage and chemistry of the battery by referring to your battery owner's manual prior to using this
product. The GB251 is for jump starting 24-volt lead-acid battery systems only. Before connecting to the battery, verify that you have
a 24-volt lead-acid battery system. The GB251 is not suitable for any other type of battery. Identify the correct polarity of the battery
terminals on the battery. The positive battery terminal is typically marked by these letters or symbol (POS,P,+). The negative battery
terminal is typically marked by these letters or symbol (NEG,N,-). Do not make any connections to the carburetor, fuel lines, or thin, sheet
metal parts. The below instructions are for a negative ground system (most common). If your vehicle is a positive ground system (very
uncommon), consult the vehicle's manual for proper jump starting instructions.
1.) Connect the positive (red) battery clamp to the positive (POS,P,+) battery terminal and the negative (black) battery clamp to the
negative (NEG,N,-) battery terminal or vehicle chassis.
Internal Battery Level

Step 3: Jump Starting.
1.) Make sure all of the vehicle's power loads (headlights, radio, air conditioning, etc.) are turned o before attempting to jump start the
vehicle.
2.) Press the power button to begin jump starting, and all LEDs will flash once. If you are properly connected to the battery, the white
boost LED will illuminate and the battery charge LEDs will chase. A 60-second timeout countdown will begin as soon as a battery is
detected.
3.) Try starting the vehicle. Most vehicles will immediately start. Some vehicles may require the GB251 to be connected for up to 30
seconds before starting. If the vehicle does not start right away, wait 20-30 seconds and try again. Do not attempt more than five (5)
consecutive jump starts within a fifteen (15) minute period. Allow the GB251 to rest for fifteen (15) minutes before attempting to jump
start the vehicle again.
4.) Once you have started your vehicle, disconnect the battery clamps, and remove the GB251.
60-Second Timeout.
A 60-second countdown will be initiated as soon as a battery is detected. After 60 seconds has elapsed, the jump starting function will
be disabled. The boost LED will turn o and the internal battery charge LEDs will indicate the current charge level of the unit. To reset the
jump-starting function, press the power button to power o the unit. Press the power button again to power on the unit and restart the
jump starting function.
CAUTION.
60-SECOND TIMEOUT IS DISABLED WHILE USING MANUAL OVERRIDE MODE. POWER WILL CONTINUE TO BE SUPPLIED WHILE
MANUAL OVERRIDE IS ACTIVE. TO MAXIMIZE THE NUMBER OF JUMP-STARTS, IT IS RECOMMENDED TO TURN OFF THE BOOST-UNIT AS
SOON AS THE VEHICLE HAS STARTED.

EN
Low Voltage Batteries & Manual Override.
The GB251 is designed to jump start 24-volt lead-acid battery systems down to 3-volts. If your battery is below 3-volts, the boost LED will
be "o". This is an indication that the GB251 can not detect a battery. If you need to jump start a battery below 3-volts there is a manual
override feature, which allows you to force "on" the jump start function. If the battery is below 3-volts, the boost LED will be o and the
voltmeter will not display a voltage.
CAUTION.
USE THIS MODE WITH EXTREME CARE. THIS MODE IS FOR 24-VOLT LEAD-ACID BATTERIES ONLY. BOTH THE SPARK PROOF AND
REVERSE POLARITY PROTECTION FEATURES ARE DISABLED. PAY VERY CLOSE ATTENTION TO THE POLARITY OF THE BATTERY BEFORE
USING THIS MODE. DO NOT ALLOW THE POSITIVE AND NEGATIVE BATTERY CLAMPS TO TOUCH OR CONNECT TO EACH OTHER AS THE
PRODUCT WILL GENERATE SPARKS. THIS MODE USES VERY HIGH CURRENT (UP TO 3000 AMPS) THAT CAN CAUSE SPARKS AND HIGH
HEAT IF NOT USED PROPERLY. IF YOU ARE UNSURE ABOUT USING THIS MODE, DO NOT ATTEMPT AND SEEK PROFESSIONAL HELP.
Powering Your USB & 12V Devices.
The GB251 has (2) USB-OUT ports and a 12V-OUT port (12V AUX/ cigarette lighter port). Plug-in any standard USB device or 12V device
(Up to 15A) and turn the GB251 “on” to start powering your devices.

EN
Interface
1.) Internal Battery Level Indicates the charge level of the internal battery.
2.) Error LED Illuminates red if reverse polarity is detected, or blinks “on” and “o” in various sequences (from 1 to 6 blinks) to convey
error conditions.
3.) Hot LED Illuminates solid red; unit is fully operational, but approaching upper temperature limit. Flashing red; unit is too hot to jump
start, only the flashlight is available in this state.
4.) Cold LED Illuminates solid blue; unit is fully operational, but approaching lower temperature limit. Flashing blue; unit is too cold to
jump start, only the flashlight is available in this state.
5.) Power Button Push to turn unit "on" & "o".
6.) Power LED Illuminates white when unit is "on". Will illuminate orange after the 60-second timeout countdown until the clamps are
removed from the Car Battery or the GB251 is power cycled 'o' and back 'on' again.
7.) Light Mode Button Toggles the ultra-bright LED light through 7 light modes: 100% > 50% > 10% > SOS > Blink > Strobe > O
8 . Voltmeter/Countdown Timer. The built-in voltmeter reads the voltage of the vehicle’s battery for enhanced diagnostics and
troubleshooting. The voltmeter will automatically read the voltage of any battery (or battery system) when the battery clamps are
connected - even if the unit is powered o. The voltmeter will read voltage between ~3V to ~30V. If the connected battery is below
3V, nothing will display. In this situation, it is likely there is a load(s) on the battery, such as, headlights or an AC fan that should be shut
o before attempting to start the vehicle. While the unit is on and after a battery is detected, the voltmeter will display the 60-second
timeout countdown.
9.) Boost LED Illuminates white when boost is active. If the unit is connected properly to a battery, the GB251 will automatically detect
a battery and go into boost mode (LED flashes white when manual override feature is active).
10.) Manual Override Button To enable, push and hold for three (3) seconds. WARNING: Disables safety protection and
manually forces boost "on". Only for use when a battery voltage is too low to be detected.

Troubleshooting
Reverse polarity / Reverse the battery connections.
Error LED: Solid Red
Unit is fully operational, but approaching upper temperature limit. / Allow the unit to cool.
Hot LED: Solid
Short circuit detected at the clamps. / Have battery checked by a professional.
Short circuit detected on battery clamps. / Remove all loads, reconnect clamps to battery.
High voltage detected at clamps (the GB251 is connected to a voltage system greater than 24V).
Charge timeout error (i.e. the GB251 has been in bulk charge for too long)
XGC OUT over current (i.e. more than 15amps is being drawn from the XGC OUT port)
BMS (Battery Management System) Fault. (Power GB251 "o" and "on" again to clear. If problem
persists contact Customer Support)
Error LED: Blinking Red
w/Cables Connected Properly
Single (1) Flash
Double (2) Flash
Quadruple (4) Flash
Quintuple (5) Flash
Sextuple (6) Flash
Unit is too hot to jump start, only the flashlight is available in this state. / Allow the unit to cool.
Hot LED: Flashing
Unit is fully operational, but approaching lower temperature limit. / Allow the unit to warm up.
Cold LED: Solid
Connected battery is below 3-volts / Remove all loads, and try again, or use manual override
mode.
Boost Light Does Not Come On
w/Cables Connected Properly
Unit is too hot to jump start or use other functions. / Allow the unit to cool, and bring the unit into
cooler environment.
Hot LED: Flashes
Then All LEDs O
Unit is too cold to jump start, only the flashlight is available in this state / Allow the unit to warm up.
Cold LED: Flashing
Error Reason/Solution
Cold LED: Flashes
Then All LEDs O Unit is too cold to jump start or use other functions. / Allow the unit to warm up, and bring the unit
into warmer environment.

EN
NOCO warrants that this product (the "Product") will be free from defects in material and workmanship for a period of one (1) year from
the date of purchase (the "Warranty Period"). For defects reported during the Warranty Period, NOCO will, at its discretion, and subject to
NOCO's technical support analysis, either repair or replace defective Products. Replacement parts and products will be new or serviceably
used, comparable in function and performance to the original part and warranted for the remainder of the original Warranty Period.
NOCO'S LIABILITY HEREUNDER IS EXPRESSLY LIMITED TO REPLACEMENT OR REPAIR. TO THE MAXIMUM EXTENT PERMITTED BY
LAW, NOCO SHALL NOT BE LIABLE TO ANY PURCHASER OF THE PRODUCT OR ANY THIRD PARTY FOR ANY SPECIAL, INDIRECT,
CONSEQUENTIAL OR EXEMPLARY DAMAGES, INCLUDING, BUT NOT LIMITED TO, LOST PROFITS, PROPERTY DAMAGE OR PERSONAL
INJURY, RELATED IN ANY WAY TO THE PRODUCT, HOWSOEVER CAUSED, EVEN IF NOCO HAD KNOWLEDGE OF THE POSSIBILITY OF
SUCH DAMAGES. THE WARRANTIES SET FORTH HEREIN ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESS, IMPLIED, STATUTORY OR
OTHERWISE, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, AND THOSE ARISING FROM COURSE OF DEALING, USAGE OR TRADE PRACTICE. IN THE EVENT THAT ANY APPLICABLE
LAWS IMPOSE WARRANTIES, CONDITIONS OR OBLIGATIONS THAT CANNOT BE EXCLUDED OR MODIFIED, THIS PARAGRAPH SHALL
APPLY TO THE GREATEST EXTENT ALLOWED BY SUCH LAWS.
NOCO One (1) Year Limited Warranty
Technical Specifications
Internal Battery: 137Wh Lithium Ion 12V (Input): 12V/5A (14V Max)
Peak Current Rating: 3000A 12V (Output): 12V, 15A Max
Operating Temperature: -20°C to +50°C Housing Protection: IP65 (w/Ports Closed)
Charging Temperature: 0ºC to +40ºC Cooling: Natural Convection
Storage Temperature: -20ºC to +50ºC (Avg Temp.) Dimensions (L x W x H): 12.5 x 13.65 x 3.7 Inches
USB (Output): 5V, 2.1A Weight: 13.65 Pounds

This Limited Warranty is made solely for the benefit of the original purchaser of the Product from NOCO or from a NOCO approved
reseller or distributor and is not assignable or transferable. To assert a warranty claim, the purchaser must: (1) request and obtain a return
merchandise authorization ("RMA") number and return location information (the "Return Location") from NOCO Support by emailing
[email protected] or by calling 1.800.456.6626; and (2) send the Product, including RMA number, receipt or a warranty fee (fee required
only if not providing receipt) of 45% of MSRP of the defective Product (the "Warranty Fee") [RMA will include applicable Warranty Fee
amount] to the Return Location. DO NOT SEND IN PRODUCT WITHOUT FIRST OBTAINING AN RMA FROM NOCO SUPPORT.
The original purchaser is responsible (and must prepay) all packaging and transportation costs to ship products for warranty service.
NOTWITHSTANDING THE ABOVE, THIS LIMITED WARRANTY IS VOID AND DOES NOT APPLY TO PRODUCTS THAT: (a) are misused,
mishandled, subjected to abuse or careless handling, accident, improperly stored, or operated under conditions of extreme voltage,
temperature, shock, or vibration beyond NOCO's recommendations for safe and eective use; (b) improperly installed, operated or
maintained; (c) are/were modified without the express written consent of NOCO; (d) have been disassembled, altered or repaired by
anyone other than NOCO; (e) the defects of which were reported after the Warranty Period.
THIS LIMITED WARRANTY DOES NOT COVER: (1) normal wear and tear; (2) cosmetic damage that does not aect functionality; or (3)
Products where the NOCO serial number is missing, altered, or defaced.
HASSLE-FREE WARRANTY CONDITIONS
These conditions apply only to Product during the Warranty Period. The Hassle-Free Warranty is void either by elapsed time from date of
purchase (elapsed time from serial number date, if no proof of purchase) or from the conditions listed earlier in this document. Return
Product with the appropriate documentation.
With Receipt:
1 Year: No charge. With proof of purchase, the warranty period begins on date of purchase.

EN
With NO Receipt:
1 Year: No charge. With no proof of purchase, the warranty period begins on the serial number date.
You may register your NOCO product online at: no.co/register. If you have any questions regarding your warranty or product, contact NOCO
Support (email and phone number above) or write to: The NOCO Company, at 30339 Diamond Parkway, #102, Glenwillow, OH 44139
USA.

Brugervejledning og garanti
FARE
LÆS OG FORSTÅ ALLE SIKKERHEDSINFORMATIONER, FØR DU ANVENDER DETTE
PRODUKT. Hvis du ikke følger disse sikkerhedsanvisninger, kan det resultere i
ELEKTRISK STØD, EKSPLOSION, BRAND, som kan resultere i alvorlig skade, død eller
ejendomsskade.
Elektrisk stød. Produktet er en elektrisk enhed, der kan give stød, og forårsage alvorlig skade. Skær
ikke i strømledninger. Undgå at dykke i vand eller at blive våd.
Eksplosion. Uovervågne, inkompatible eller beskadigede batterier kan eksplodere, hvis de anvendes
sammen med produktet. Lad ikke produktet stå uden opsyn under brug. Forsøg ikke at starte med på
et beskadiget eller frosset batteri. Brug kun produktet med batterier der har en anbefalet spænding.
Anvendes i godt ventilerede områder.
Brand. Produktet er en elektrisk enhed, der udsender varme og kan forårsage forbrændinger. Produktet
må ikke dækkes til. Ryg ikke eller anvend en elektrisk eller elektrisk brandkilde ved brug af produktet.
Hold produktet væk fra brændbare materialer.
Øjenskade. Brug øjenbeskyttelse ved brug af produktet. Batterier kan eksplodere og forårsage
flydende aald. Batterisyre kan forårsage øjen- og hudirritation. I tilfælde af kontakt med øjne eller hud,
skyl det berørte område med rent vand og kontakt omgående giftkontrollen.
Eksplosive gasser. Arbejde i nærheden af bly-syre er farligt. Batterier genererer eksplosive
gasser under normal batteridrift. For at reducere risikoen for en batterieksplosion, skal du følge alle
sikkerhedsinstrukser og dem, der er oentliggjort af batteriproducenten, og producenten af det ønskede
udstyr, der skal bruges i nærheden af batteriet. Gennemgå advarselsmærkninger på disse produkter
og på motoren.
For flere oplysninger og support,
besøg:
Dansk

DA
Forslag 65. Batteriposter, terminaler og tilhørende tilbehør indeholder kemikalier, herunder bly. Disse materialer er kendt for i staten
Californien, at forårsage kræft og fødselsdefekter, samt anden reproduktiv skade. Personlig sikkerhedsforanstaltning. Brug kun
produktet som anvist. Nogen skal være indenfor rækkevidden af din stemme, eller tæt nok til at komme til din hjælp, i tilfælde af en
nødsituation. Sørg for, at have en forsyning af rent vand og sæbe i nærheden, i tilfælde af batterisyreforurening. Bær altid øjenbeskyttelse og
beskyttelsestøj imens du arbejder i nærheden af et batteri. Vask altid hænderne efter håndtering af batterier og beslægtede materialer. Undgå
at håndtere eller bære metalgenstande, når du arbejder med batterier, herunder; værktøj, ure eller smykker. Hvis metal tabes på batteriet
kan dette generere en gnist eller skabe kortslutning, der medfører elektrisk stød, brand, eksplosion, som kan medføre skade, død eller skade
på ejendom. Mindreårige. Hvis produktet er beregnet af "Køber" til at blive benyttet af en mindreårig, indvilger den købsvoksne i at give
detaljerede instruktioner og advarsler til enhver mindreårig inden brug. Hvis det ikke er tilfældet, er det alene "Køberens ansvar ", der er enig
i at fritage NOCO for ethvert utilsigtet brug, eller misbrug af en mindreårig. Kvælningsfare. Tilbehør kan betyde en kvælningsfare for børn.
Efterlad ikke børn uden opsyn med produktet eller tilbehør. Produktet er ikke et legetøj. Håndtering. Håndter produkt med omhu. Produktet
kan blive beskadiget, hvis det rammes hårdt. Brug ikke et beskadiget produkt, herunder, men ikke begrænset til, revner til kabinettet eller
Vigtige sikkerhedsadvarsler
FORSIGTIG
Manuel tilstand deaktiverer alle sikkerhedsforanstaltninger. Hvis enheden bruges forkert og/eller imod vores anbefalede brug, kan det
føre til personskade eller dødsfald, og vil annullere din garanti. Risiko for brand, eksplosion og forbrændinger. Undgå at adskillelse, knuse,
opvarme til over 60 °C (140 °F) eller brænde. Denne enhed er beregnet til midlertidig brug udendørs, og der skal udvises rimelig omhu,
når enheden bruges under våde forhold.
ADVARSEL
Undgå at overoplade ikke det interne batteri. Se brugsanvisningen. Undgå at ryge, tænde en tændstik eller fremstille gnister i nærheden af
strømforsyningen. Oplad kun det interne batteri i et godt ventileret område, når det ikke er i brug.
FORSIGTIG
Risiko for personskade. Brug ikke dette produkt, hvis ledningen eller batterikablerne er beskadiget på nogen måde. Denne enhed er ikke
beregnet til brug i et kommercielt værksted. Denne enhed skal opbevares indendørs, når den ikke er i brug. Enheden må ikke opbevares
eller efterlades udendørs, når den ikke er i brug.

beskadigede kabler. Brug ikke produktet med en beskadiget strømledning. Fugtighed og væsker kan beskadige produktet. Produktet og
elektriske komponenter må ikke håndteres i nærheden af væske. Opbevar og betjen produktet på tørre steder. Brug ikke produktet, hvis det
bliver vådt. Hvis produktet allerede er i drift og bliver vådt, skal du afbryde det fra batteriet og afbryde brug omgående. Undlad at afbryde
produktet ved at trække i kablerne. Ændringer.Forsøg ikke at ændre, modificere eller reparere nogen del af produktet. Afmontering af
produktet kan forårsage skade, død eller skade på ejendommen. Hvis produktet bliver beskadiget, har funktionsfejl eller kommer i kontakt
med væske, afbrydes brugen og NOCO skal kontaktes. Enhver ændring af produktet vil annullere din garanti. Tilbehør. Dette produkt er kun
godkendt til brug med NOCO tilbehør. NOCO er ikke ansvarlig for brugernes sikkerhed eller beskadigelse, når der anvendes tilbehør, der ikke
er godkendt af NOCO. Placering. Forhindre batterisyre i at komme i kontakt med produktet. Brug ikke produktet i et lukket område eller i
et område med begrænset ventilation. Undlad at stille et batteri oven på produktet. Placer kablerne for at undgå utilsigtet skade ved
bevægelige køretøjsdele (herunder hætter og døre), bevægelige motordele (herunder blæsere, bælter og remskiver), eller hvad der kan blive
en fare, der kan forårsage skade eller død. Driftstemperatur. Dette produkt er designet til at arbejde i omgivende temperaturer mellem
-20ºC til 50ºC. Må ikke bruges uden for temperaturområder. Start ikke et frosset batteri. Stop brug af produktet straks, hvis batteriet bliver
for varmt. Opbevaring. Brug ikke eller opbevar dit produkt i områder med høje koncentrationer af støv eller luftbårne materialer. Opbevar
produktet på flade, sikre overflader, så det ikke er tilbøjeligt til at falde ned. Opbevar dit produkt på et tørt sted. Opbevaringstemperaturen er
-20ºC - 50ºC (0ºC til +40ºC gennemsnitstemperatur). En temperatur på 80ºC må aldrig overstiges under enhver betingelse.Kompatibilitet.
Produktet er kun kompatibelt med 12 volts blysyrebatterisystemer. Forsøg ikke at bruge produktet til nogen andre typer batterier. Jumpstart
af batterier med en anden kemi kan det medføre kvæstelse, dødsfald eller tingsskade. Kontakt batteriproducenten, inden du forsøger at
jumpstarte batteriet. Forsøg ikke at jumpstarte et batteri, hvis du er usikker på batteriets kemi eller spænding. Batteriet. Det indbyggede
lithium-ion batteri i produktet må kun udskiftes af NOCO, og skal genbruges eller bortskaes separat fra husholdningsaald. Forsøg ikke at
udskifte batteriet selv, og håndter ikke et beskadiget eller utæt lithium-ion batteri. Batteriet må ikke bortskaes i husholdningsaald.
Bortskaelse af batterier i husholdningsaald er ulovligt i henhold til statlige og føderale miljølove- og forskrifter. Bring altid brugte batterier
til din lokale genbrugscentral. Hvis batteriet er meget varmt, udsender en lugt, er deformeret, beskåret eller oplever eller viser en unormal
forekomst, skal du straks stoppe al brug og kontakte NOCO. Opladning af batterier. Oplad produktet med den medfølgende 12 V DC
biloplader eller XGC4-vægoplader. Brug aldrig ikke-specificerede strømforsyningsadaptere eller strømforsyningsadaptere fra tredjeparter,
fordi sådanne strømforsyningsadaptere kan udgøre en alvorlig elektrisk risiko, der kan medføre kvæstelse af en person eller skader på
enheden eller anden tingsskade. Brug af beskadigede kabler eller opladere, eller opladning under fugtige forhold, kan medføre elektrisk stød.
NOCO er ikke ansvarlig for brugerens sikkerhed, skade på enheden eller anden tingsskade, når der anvendes tilbehør eller strømforsyninger,
der ikke godkendt af NOCO. Ved brug af XGC4-vægopladeren skal du sørge for, at stikket er helt isat i adapteren, inden du tilslutter opladeren

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til stikkontakten. Strømforsyningsadapteren kan blive varm under normal brug, og længerevarende hudkontakt kan medføre
legemesbeskadigelse. Sørg altid for, at der er tilstrækkelig ventilation om strømforsyningsadapteren, når den er i brug. For at sikre maksimal
batterilevetid skal du undgå at oplade dit produkt til mere end én uge ad gangen, fordi overopladning kan forkorte batterilevetiden. Med tiden
vil et ubrugt produkt blive afladet, så det skal genoplades inden brug. Produktet skal kobles fra strømkilder, når det ikke er i brug. Brug kun
produktet til de tiltænkte formål. Medicinske apparater. Produktet kan udsende elektromagnetiske felter. Produktet indeholder
magnetiske komponenter, der kan interferere med pacemakere, defibrillatorer eller andre medicinske anordninger. Disse elektromagnetiske
felter kan interferere med pacemakere eller andre medicinske anordninger. Kontakt din læge før brug, hvis du har noget medicinsk udstyr,
inklusive pacemakere. Hvis du har mistanke om, at produktet forstyrrer en medicinsk enhed, skal du straks stoppe brug af produktet og
kontakte din læge. Medicinske forhold. Hvis du har en medicinsk tilstand, som du mener kunne være berørt af produktet, herunder men
ikke begrænset til: anfald, besvimelser, øjeproblemer eller hovedpine, skal du kontakte din læge inden brug af produktet. Brugen af en kraftig,
integreret lommelygte indeholder en fare overfor lysfølsomhed. Brug af lyset i Strobe-tilstand kan forårsage anfald hos personer med
lysfølsom epilepsi, hvilket kan medføre alvorlig skade eller død. Lys. At kigge direkte ind i lommelygten kan resultere i permanent øjenskade.
Produktet er forsynet med en højtydende LED-forfokuseret lampe, der udsender en kraftig stråle ved den højeste indstilling. Rengøring.
Sluk for produktet, inden der foretages vedligeholdelse eller rengøring. Rengør og tør produktet omgående, hvis det kommer i kontakt med
væske eller enhver form for forurenende stof. Brug en blød lintfri (mikrofiber) klud. Undgå at få fugt i åbninger. Eksplosive atmosfærer.
Overhold alle tegn og instruktioner. Brug ikke produktet i områder med eksplosionsfarlig atmosfære, herunder brændstofområder eller
områder, der indeholder kemikalier eller partikler som korn, støv eller metalpulver. Høje konsekvensvirkninger. Dette produkt er ikke
beregnet til brug, hvor produktfejl kan føre til skade, død eller alvorlig miljøskade. Radiofrekvensinterferens. Produktet er designet, testet
og fremstillet til at overholde reglerne for radiofrekvensemissioner. Sådanne emissioner fra produktet kan påvirke driften af andet elektronisk
udstyr negativt og forårsage funktionsfejl. Modelnummer: GB251.Denne enhed overholder Del 15 i FCC-reglerne. Drift er underlagt
følgende to betingelser: (1) denne enhed må ikke forårsage skadelig interferens, og (2) denne enhed skal acceptere enhver modtaget
interferens, herunder interferens, der kan forårsage uønsket drift. BEMÆRK: Dette udstyr er blevet testet og fundet at overholde grænserne
for en Klasse A digital enhed, i henhold til Del 15 i FCC-reglerne. Disse grænser er designet til at give rimelig beskyttelse mod skadelig
interferens, når udstyret betjenes i et kommercielt miljø. Dette udstyr genererer, bruger og kan udstråle radiofrekvensenergi, og hvis det ikke
installeres og anvendes i overensstemmelse med brugsanvisningen, kan det forårsage skadelig interferens med radiokommunikationen.
Brug i et beboelsesområde vil sandsynligvis forårsage skadelig interferens, i hvilket tilfælde brugeren bliver forpligtet til at korrigere
forstyrrelsen på egen bekostning.

Ved opladning er opladningsniveauet for det interne batteri angivet med
opladningsdioderne. LED'erne vil langsomt pulsere "Til" og "Fra", og bliver faste indtil
alle fire opladningsdioder er tændte. Når batteriet er fuldt opladet, vil den grønne 100%
LED vil være fast, og 25%, 50% og 75% Opladning LED'erne vil blive slukket. Fra tid
til anden vil den grønne 100% LED pulsere, der viser, at vedligeholdelsesopladningen
er i gang.
Sådan bruges det
Trin 1: Oplad GB251-enheden.
GB251 leveres delvist opladet og skal oplades fuldstændigt inden brug. Tilslut
GB251 ved hjælp af den medfølgende 12 V DC-biloplader eller XGC4-vægoplader
til 12 V-indgangsporten. Opladningstiden for GB251 vil variere afhængig af
afladningsniveauet og den anvendte strømkilde. De faktiske resultater kan variere på
grund af batteritilstanden og afladningsniveauet.
Opladningstid: Opladning
vurdering:
5hr 56W
Trin 2: Tilslut til batteriet.
Læs grundigt og forstå bilens brugsvejledning vedrørende specifikke sikkerhedsforanstaltninger og anbefalede måder at jumpstarte
køretøjet på. Sørg for at finde ud af batteriets kemi og spænding i henhold til brugsanvisningen for batteriet inden brug af batteriet.
GB251 er kun beregnet til at jumpstarte blysyrebatterisystemer. Inden batteriet tilsluttes, skal du sikre dig, at du har at gøre med at 24 V
blysyrebatterisystem. GB251 er ikke egnet til nogen andre typer batterier. Find den rigtige polaritet af batteriets terminaler. Den positive
batteriterminal er typisk markeret med disse bogstaver eller symboler (POS,P,+). Den negative terminal er typisk markeret med disse
bogstaver eller symboler (NEG,N,-). Foretag ingen tilslutninger til karburator, brændstofledninger eller tyndpladedele i metal. Instruktionerne
nedenfor er for negativt jordsystem (mest almindeligt). Hvis dit køretøj er et positivt jordsystem (meget ualmindeligt), skal du læse
køretøjets brugsvejledning for at finde de rigtige instruktioner om jumpstart.
Internt batteriniveau

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1.) Tilslut den positive (røde) batteriklemme til den positive (POS, P, +) batteripol og den negative (sorte) batteriklemme til den negative
(NEG, N, -) batteripol eller køretøjets chassis.
Trin 3: Kabel start
1.) Sørg for, at alle køretøjets strømbelastninger (forlygter, radio, klimaanlæg, osv.) er slukket, før du forsøger at starte bilen.
2.) Tryk på tænd/sluk-knappen for at begynde jumpstarten, hvorefter alle LED'er blinker én gang. Hvis dit batteri er korrekt tilsluttet, vil den
hvide boost-LED lyse, og batterioplader-LED'en vil følge efter. Der vil begynde en timeout-nedtælling på 60 sekunder, så snart et batteri er
blevet detekteret.
3.) Prøv at starte køretøjet. De fleste køretøjer starter straks. Visse køretøjer kan kræve, at GB251 forbindes i op til 30 sekunder før start.
Hvis bilen ikke starter med det samme, skal du vente 20-30 sekunder og prøve igen. Prøv ikke mere end fem (5) start, efter hinanden,
inden for en femten (15) minutters periode. Lad GB251 hvile i femten (15) minutter, før du forsøger at starte bilen igen.
4.) Når du har startet dit køretøj, skal du afbryde batteriklemmerne og fjerne GB251.
60-sekunders timeout.
En nedtælling på 60 sekunder indledes, så snart et batteri registreres. Når der er gået 60 sekunder, deaktiveres starthjælpsfunktionen.
Boost-LED'en slukkes, og opladnings-LED'erne for det interne batteri viser enhedens aktuelle opladningsniveau. For at nulstille
starthjælpsfunktionen skal du trykke på tænd/sluk-knappen for at slukke enheden. Tryk på tænd/sluk-knappen igen for at tænde for
enheden og genstarte starthjælpsfunktionen.
FORSIGTIG.
60-SEKUNDERS TIMEOUT ER DEAKTIVERET, NÅR MANUEL OVERSTYRINGSTILSTAND ER I BRUG. STRØM VIL FORTSAT BLIVE LEVERET,
MENS MANUEL OVERSTYRING ER AKTIV. FOR AT MAKSIMERE ANTALLET AF STARTHJÆLPS-SEKVENSER ANBEFALES DET AT SLUKKE
FOR BOOST-ENHEDEN, SÅ SNART KØRETØJET ER STARTET.

Lavspændingsbatterier og manuel overstyring
GB251 er beregnet til at jumpstarte 24-volts blysyrebatterisystemer og ned til 2 volt. Hvis dit batteri er på mindre end 2 volt, vil boost-
LED'en være slukket. Dette indikerer, at GB251 ikke kan detektere et batteri. Hvis du skal jumpstarte et batteri på mindre end 2 volt,
findes der en funktion til manuel overstyring, så du kan gennemtvinge aktivering af jumpstartfunktionen. Hvis batteriet er på under 2 volt,
vil boost-LED'en være slukket, og voltmeteret vil ikke vise en spænding.
FORSIGTIG.
BRUG DENNE TILSTAND MED YDERSTE FORSIGTIGHED. DENNE TILSTAND ER KUN TIL 24-VOLTS BLYSYREBATTERISYSTEMER.
GNISTBESKYTTELSEN OG BESKYTTELSEN MOD POLVENDING ER BEGGE DEAKTIVEREDE. VÆR YDERST OPMÆRKSOM PÅ BATTERIETS
POLARITET INDEN BRUG AF DENNE TILSTAND. SØRG FOR, AT DEN POSITIVE OG DEN NEGATIVE BATTERIKLEMME IKKE BERØRER
HINANDEN ELLER BLIVER FORBUNDET, DA PRODUKTET ELLERS VIL GNISTRE. DENNE TILSTAND BRUGER MEGET HØJE STRØMSTYRKER
(OP TIL 3000 AMPERE), SOM KAN GENERERE GNISTER OG HØJ VARME VED FORKERT BRUG. HVIS DU ER USIKKER PÅ BRUGEN AF
DENNE TILSTAND, SKAL DU IKKE FORSØGE AT BRUGE DEN. SØG I STEDET PROFESSIONEL HJÆLP.
Strømforsyning af dine USB- og 12-voltsenheder.
GB251 har to (2) USB-udgangsporte og en 12 V udgangsport (12 V reserve-/cigarettænderport) Isæt enhver standard-USB-enhed eller 12
V enhed (op til 15 A) og tænd for GB251 for at begynde at strømforsyne dine enheder.