Enerwatt EWC12-148 User manual

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MODEL: EWC12-148
USER’S MANUAL
OWNER’S MANUAL
8 AMP 12 VOLT BATTERY CHARGER
PLUS BATTERY MAINTAINER AND REJUVENATOR
THIS MANUAL CONTAINS IMPORTANT SAFETY
AND OPERATING INSTRUCTIONS.
READ ENTIRE INSTRUCTION BEFORE USE.
WARNING
• The charger is designed to charge and maintain 12V conventional lead-acid battery only. (VRLA), AGM, Pure Lead,
Gel and WET, not suitable for Li-ion batteries.
• We always recommend that you check the Battery Manufacturers specications before using this charger
• Explosive gases may escape from the battery during charging. Provide ventilation to prevent ames and sparks.
• For indoor use. Do not expose charger to rain, snow or liquids.
• For charging lead-acid batteries ONLY (of the size & voltage indicated in the specications table)
• Battery acid is corrosive. Rinse immediately with water if acid comes into contact with skin or eyes.
• The charger should be used on a at surface.
• Never charge a frozen battery.
• Never charge a damaged battery.
• Never place the charger on the battery while charging.
• Be extra cautious to reduce risk of dropping a metal tool onto battery.
It might spark or short-circuit battery or other electrical part that may cause explosion.
• When working with a lead-acid battery, remove personal metal items such as rings, bracelets, necklaces, watches…
• NEVER smoke or allow a spark or ame in vicinity of battery or engine.
• Do not charge non-rechargeable batteries.
• In order to reduce risk of electric shock, unplug charger from AC outlet before doing any maintenance or cleaning.
Turn o controls will reduce risk.
• The kit is not supposed to be used by children or by people who are not able to understand the manual,
unless they are supervised by a responsible person who ensures the proper use of the kit.
Version française à la page 

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MODEL: EWC12-148
USER’S MANUAL
MAIN FEATURES
SMART CHARGE PLUS MAINTENANCE AND REJUVENATION
• Easy to Use: Easy to operate and requires no technical experience.
• Fully controlled by Microprocessor
•Battery initial condition diagnosis
•Enhanced battery rejuvenation (patented technology)
• Battery voltage retention analysis
• Peak pulses for long term maintenance
• Ultra lower power consumption ( ECO mode)
• Multi Charge Stages:
- Qualication - Battery condition check
- Battery rejuvenation
- Soft Start
- Bulk Charging
- Absorption Charging
- Voltage analysis
- Float Mode
- Long term maintenance pulse charge
• Diagnosis & Charge - Automatic diagnosis and charge: On power up, the charger will automatically diagnoses the battery
condition, and then determine if the battery charger engages the rejuvenation stage or goes into charging cycle.
• Enhanced battery rejuvenation stage – Patented battery rejuvenation technology: The charger has a unique and patented
rejuvenation feature which uses high voltage equalizing and peak pulse reconditioning to repair the sulphated batteries,
this feature is fully automatic and subjected to the internal impendence of the battery.
• Charge & Maintain - Automatic Maintenance: The battery charger could be left unattended and it is full time managed
by program; when the battery is charged to "full" state, the charger automatically switches to maintain the battery.
It will monitor the battery voltage and continue to peak performance with special pulse charge in long term maintenance.
• Short circuit or Reverse polarity protection: The charger will automatically turn o when the output short circuit
or reverse polarity occurred and prevent any damage.
• Never overcharge your battery
• Heavy-Duty cables
• Corrosion-resistant output connectors
• Output clips and ring terminals provided: It comes with a quick connect y lead and 2 dierent kinds of connectors,
crocodile clips and a ring terminals. The ring terminals are perfect for permanent connection to your battery.
You can connect the lead to the battery and tuck the lead away while you are using your vehicle and when you
get back to your garage simply plug the lead back into the charger.
TEMPERATURE & SAFETY PROTECTION
The charger contains the following safety protections:
• INTERNAL OVERHEAT PROTECTION: The battery charger is built-in with overheat and overload electronic circuit.
When the charger is overheated, the charger will decrease the charging current. If temperature is decreased, the charger
will resume to normal charging.
• TIMER PROTECTION: The charger provides the maximum charging timer management for each charging stage;
this condition may occur if attempting to charge any severely discharged or heavily sulfated battery. Once the charger
is timed-out, the charger will stop charging for protecting your battery and the RED LED will be FLASH fast, while this situation
occurs, please check your battery status.
• REVERSE POLARITY: The charger has reverse battery protection. If a reverse battery exists (Red LED ON, while output leads
are connected backwards), simply unplug charger from AC power and properly remake the connections as described
in this manual.
• SHORT CIRCUIT PROTECTION: The charger has output short-circuit protection. If the charger output lead short condition exists
(Red LED ON, while output leads are short-circuit), simply unplug charger from AC power and properly remake the connections
as described in this manual. The charger employs hardware and smart program to automatically detect the output connections.
Once the charger detects the output short-circuit or reverse polarity, it will not deliver any output current.

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MODEL: EWC12-148
USER’S MANUAL
ECO MODE FOR ENERGY SAVING
This battery charger has built in ultra-low power consumption circuit and operates with very high power eciency.
The charger will automatically go into ECO mode when battery is disconnected.
RAPID CHARGE / SILENT CHARGE NIGHT MODE
AND MAINTENANCE
Maximum mode: Uses the rated maximum charging current to ensure the fastest charging time,
Regular mode (Night mode): Charges at a slightly reduced charge rate for medium vehicles.
Maintenance mode: Ideal and recommended for long term battery maintenance.
BATTERY TYPES & CAPACITY
• Suits all Lead Acid Type Batteries. (GEL, WET, AGM, Pure Lead)
• Adjustable charge rate: 12V volt battery
Some batteries may be able to handle a higher Charge Current; Check with the battery
Manufacturer when charging batteries with small capacity.
ELECTRICAL PARTS
Delivered with:
• A.C Power Cord:
- 6 feet with UL Plug
• Output Lead:
- 4 feet with Trailer Connector
• Extension Cord:
- 2 feet with Trailer Connector + Battery Clamp or
- 2 feet with Trailer Connector + Ring Connector
ENVIRONMENTAL CHARACTERISTICS
• Operating Temperature: 0 to 40° C
• Storage Temperature: -10 to 80°C
• Operating Humidity Range: 90% RH Max
• Cooling: natural cooling
Deep cycle (AH) Automotive (CCA) Marine (MCA) Time (Hours)
1Amp 7-20 40-120 55-165 7-24
4Amp 30-80 180-480 250-650 7-24
8Amp 60-160 360-1000 500-1300 7-24
Fault/Erreur
Full/Pleine
Pure Lead
Plomb pur
GEL
AGM & Wet
AGM et Humide
Absorption
Regular
/Régulier
Maintenance
/Entretien
Charge Mode
Type de charge
Battery Type
Type de batterie
Bulk/Masse
1A
Smart Charger
Chargeur intelligent
4A
Maximum 8A

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MODEL: EWC12-148
USER’S MANUAL
TECHNICAL SPECIFICATIONS
CHARGING INSTRUCTIONS
STEP 1  PRE CHARGE CHECK & ELECTROLYTE LEVEL CHECK
• Check the Battery Electrolyte level (Not required on sealed & Maintenance Free Batteries).
If necessary, remove the vent caps and add distilled water so the levels are halfway between the upper and lower ll lines.
• Check the Voltage Output Switch on the charger and make sure it’s on the correct voltage
STEP 2  CONNECTING THE BATTERY CHARGER TO YOUR BATTERY
• If the Battery is out of the vehicle:
- Connect the Red lead from the charger to the positive (+) battery terminal.
- Connect the Black lead from the charger to the negative (-) battery terminal.
• If Battery is still in the vehicle, determine if the vehicle is positively or negatively grounded.
- If Negatively grounded (Most Common) – FIRST Connect the Red (+) battery charger lead to the positive (+) Battery post
and then connect the Black (-) battery charger lead to the vehicle’s chassis and away from the fuel line.
- If Positively grounded – FIRST Connect the Black (-) battery charger lead to the Negative (-) battery post and then connect
the Red (+) battery charger lead to the Vehicle’s chassis and far away from the fuel line.
STEP 3  CONNECT THE BATTERY CHARGER TO MAINS POWER
• Connect the battery charger to the Mains Powered socket.
• The Charger will automatically start when AC power is connected and switched on.
(Note: If the Fault Indicator LED illuminates Red, please check your connections as it’s likely that the Positive
and Negative Leads are reversed. Refer to Trouble Shooting Page for further information)
Model Number EWC12-148
Type Smart
Input Voltage Range 100-120Vac
Input Frequency 50/60Hz
Output 8A @ 12V
Start Voltage 2V
Charge Voltage
GEL-14.1V
AGM&WET-14.4V
Pure Lead - 14,7 V
Equalizing Voltage
N/A
AGM&WET-15.5V
Pure Lead -16.2V
Float voltage 13.2V
Rejuvenation voltage 16.0V
Rejuvenation current 0.5~1.0A
Size (L*W*H) in mm 217*104*58
Weight 1.1Kg
Approvals CE, UL/cUL, FCC, AS, NZS, DOE

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MODEL: EWC12-148
USER’S MANUAL
THE CHARGING PROCESS
The charging stages and performance are as follows:
ECO Mode
If ac power is connected, and the battery is not connected, after 10 seconds, the charger will automatically go into ECO mode.
• The Green LED is fast ashing indicates the ECO mode.
BATTERY INITIAL QUALIFICATION
When the battery is connected and ac powers on, the program will automatically run qualication as the following processes:
- Detects the battery internal impendence and initial voltage.
- Determine the charging rate acceptance.
- Diagnoses the battery sulphated condition.
ENHANCED BATTERY REJUVENATION
If the initial qualication detected that the battery was in poor condition, our unique rejuvenation process
(patented in USA and Europe) will begin automatically. During the rejuvenation process, a high voltage equalizing and
peak pulse reconditioning charge is used to repair the sulphated battery, this unique patented feature will break down and
dissolve the lead-sulphate crystal built up on the battery plates, balance out the high concentrations of acid, which is to extend
your battery life and performance.
If the battery voltage does not reach 9V within 24 hours, the Rejuvenation process will be timed out.
• The Blue LED is ashing indicates the Rejuvenation stage.
If the program detects the battery can be normally accepted charging current, it will directly go into Soft start stage;
if the battery still can not accept the charging current after 24 hours rejuvenation, it expresses the Battery Rejuvenation
fails and the battery is not healthy.
• The Red LED will be ON to indicate the battery rejuvenation failure.
SMART CHARGING MODE
There are following stages:
• Soft start Charging Mode (C.C. Mode)
ƒ Blue Charging LED is ashing.
ƒ Gently ramps up the battery voltage to 11V, if the battery voltage doesn’t reach 11V within 6 hours,
the charger will engage a safety timer protection and RED faulty LED will start ash.
• Bulk Charging Mode (C.C. Mode)
ƒ Blue Charging LED is ON.
ƒ The battery can be charged about 80%.
ƒ The charger delivers an almost constant current of the maximum output until the battery voltage reaches
the preset voltage value within 24 hours, if the battery voltage doesn’t reach preset voltage value within 24 hours,
the charger will engage a safety timer protection and RED faulty LED will start ash.
• Absorption Mode (C.V Mode)
ƒ Green absorption charging LED is ON.
ƒ The battery can charge up to almost 100%.
ƒ The charging current tapers and the charging voltage are kept constant at the preset value without overcharging.
• Equalization charging
ƒ Blue Bulk LED and Green Equalization LED both ashing.
ƒ A well proven process that carefully equalize the battery to store it’s full capacity, the Equalization stage for Pure Lead
battery selection is automatic. The equalization stage for AGM & WET and GEL battery only occurs if the in Initial start
voltage is below 11 Volts.