Gacell CT-1000 User manual

Battery Charger User Guide
MODEL: CT-1000
AC Input: 220-240VAC, 50-60Hz
DC Output: 12VDC,1A;
6VDC, 1A
Please read and understand all important safety and operating
instructions before using this charger. In addition, please read and follow
all battery and vehicle manufacturer’s instructions and cautionary
markings.

1
IMPORTANT SAFETY INSTRUCTIONS
SAFETY PRECAUTIONS FOR WORKING IN THE VICINITY OF A BATTERY
1) Batteries generate explosive gases during normal operation. Use in
well-ventilated area.
2) Consider having someone close enough or within the range of your
voice to come to your aid when you work near a battery.
3) Do NOT smoke, strike a match, or cause a spark in vicinity of battery
or engine. Avoid explosive gas, flames and sparks.
4) Remove all personal jewelry, such as rings, bracelets, necklaces, and
watches while working with a vehicle battery. These items may produce
a short-circuit that could cause severe burns.
5) Be extra cautious to reduce risk of dropping a metal tool onto the
battery. It might spark or short-circuit a battery or other electrical
hardware which may cause an explosion or fire.
6) Wear complete eye protection, hand and clothing protection. Avoid
touching eyes while working near a battery.
7) Study all battery manufacturer’s specific precautions such as
removing or not removing cell caps while charging and recommended
rates of charge.
8) Clean battery terminals before connected with the charger. Be careful
to keep corrosion from coming in contact with eyes.
9) When it is necessary to remove a battery from vehicle to charge,
always remove grounded terminal from battery first. Make sure all
accessories in the vehicle are off in order to prevent an arc.
10) It is NOT intended to supply power to an extra-low-voltage electrical
system or to charge dry-cell batteries. Charging dry-cell batteries may
burst and cause injury to persons and property.
11) NEVER charge a frozen, damaged, leaking or non-rechargeable
battery.
12) If battery electrolyte contacts skin or clothing, wash immediately
with soap and water. If electrolyte enters eye, immediately flood eye
with running clean cold water for at least 15 minutes and get medical
attention immediately.

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SAFETY PRECAUTIONS FOR USING THE CHARGER
1) Do NOT place the charger in the engine compartment or near moving
parts or near the battery; place as far away from them as DC cable
permits. NEVER place a charger directly above a battery being charged;
gases or fluids from battery will corrode and damage charger.
2) Do NOT cover the charger while charging.
3) Do NOT expose to rain or wet conditions.
4) Connect and disconnect DC output only after setting AC cord from
electric outlet.
5) Use of an attachment not recommended or sold by the manufacturer
may result in a risk of fire, electric shock or injury to persons.
6) Do not overcharge batteries by selecting the wrong charge mode.
7) To reduce the risk of damage to electric plug and cord, pull by the
plug rather than the cord when disconnecting charger.
8) To reduce risk of electric shock, unplug charger from outlet before
attempting any maintenance or cleaning.
9) Operate with caution if the charger has received direct hit of force or
been dropped. Have it checked and repaired if damaged.
10) Any repair must be carried out by the manufacturer or an authorized
repair agent in order to avoid danger.
ABOUT CT-1000
1) The CT-1000 is perfect for keeping all of your 12V and 6V lead-acid
batteries in top condition, including WET (Flooded), GEL, MF
(Maintenance-Free), EFB (Enhanced Flooded Battery) and AGM
(Absorbed Glass Mat) batteries.
2) Built-in intelligent microprocessor makes charging and maintaining
faster, easier and safer.
3) This charger has safety features, including spark proof, protection for
reverse polarity, short circuit, overcurrent and overcharge.
4) It has auto-memory, which returns to last selected mode when
restarted.
5) When Emerald Green LED is flashing, the charger is in bulk charge at a
constant 750mA rated current output. When Emerald Green LED turns

3
to solid, the battery is fully charged.
6) Since this is a battery maintainer and you will keep it connected with
vehicle battery for a long time, do monitor monthly. Follow the battery
manufacturer’s instructions for adding distilled water if applicable.
7) Following is the charger’s technical specification:
AC Input
220-240VAC, 50-60Hz, 0.5A
DC Output
12VDC, 1A;
6VDC, 1A
Start Voltage
> 1V
Housing Protection
IP54
Battery Type
All Types of 6V and 12V Lead-acid
Batteries
Accessories Included
Clamp Connectors, Ring Connectors
Ambient Temperature
0℃~ +40℃
CONNECTING TO THE BATTERY
1) Identify polarity of battery posts. 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,-).
2) Do not make any connections to the carburetor, fuel lines, or thin
metal parts.
3) Identify if you have a negative or positive grounded vehicle. This can
be done by identifying which battery post (NEG or POS) is connected to
the chassis.
4) For a negative grounded vehicle (most common): connect the RED
POSITIVE clamp / ring connector first to the positive battery terminal,
then connect the BLACK NEGATIV clamp / ring connector to the negative
battery terminal or vehicle chassis.
5) For a positive grounded vehicle (very uncommon): connect the BLACK
NEGATIV clamp / ring connector first to the negative battery terminal,
then connect the RED POSITIVE clamp / ring connector to the positive
battery terminal or vehicle chassis.
6) When disconnecting, disconnect in the reverse sequence, removing
the negative first (or positive first for positive ground systems).

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7) Follow these steps when using 12V accessory plug (CT-1000 does not
have this accessory): keep the vehicle hood open. Connect the end of
the 12V accessory plug to the charger; insert the 12V accessory plug into
the vehicle’s 12V outlet. If the vehicle’s ignition key has to be on in
order for the 12V outlet to supply / receive power, turn the key, without
starting the engine.
8) A marine (boat) battery must be removed and charged on shore. To
charge it on board requires equipment specially designed for marine
use.
CHARGING MODES
CT-1000 has two modes: 12V and 6V. Do not operate the charger until
you confirm the appropriate charge mode for your battery.
Mode
Explanation
12V
Charging and Maintaining 12V
WET/GEL/MF/EFB/AGM batteries (Blue
LED)
6V
Charging and Maintaining 6V
WET/GEL/MF/EFB/AGM batteries (Green
LED)
NOTICE: Make sure your battery to be charged / maintained is in good
condition. The CT-750 cannot be used to recover severely discharged
batteries or dead batteries.
How to deal with the batteries which are deeply discharged, but in good
condition?
1. Make sure the battery is in good condition (not dead) and was deeply
discharged only. You can use the battery analyzer to get the result if you
have.
2. Jumpstart your vehicle or use a battery charger with recovery function
to activate the battery until the battery voltage increases to normal
condition. For 12V batteries, the normal voltage is above 8 volt at least;
for 6V batteries, the normal voltage is above 4 volt at least.
3. Use the CT-1000 Charger / Maintainer do the rest charging and
maintaining work.

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CHARGING TIME
Different battery capacity and residual voltage would affect the charging
time. Following data is only for reference (when discharge 12V lead-acid
battery to 9V, with 5A discharge current).
Battery Size/Ah
Approx. Time to
Charge in Hours
(12V)
12
8H
20
11H
30
13H
40
18H
LED COMMUNICATION OF ABNORMAL RESULTS
No
.
LIGHT(S)
CONDITION
CAUSE(S)
SOLUTION(S)
1
Solid Red
Warning! LED
Reverse Polarity
Exchange the red and
black clamps or ring
terminals to the correct
battery posts
2
Flashing Red
Warning! LED
1) Open-circuit
2) Dirty Battery
Posts
3) Dead Battery
(voltage below 1V)
4) Output Short
Circuit
1) Connect the red and
black clamps or ring
terminals to the battery
posts
2) Clean the battery posts
3) Replace the battery
with a new one
immediately
4) Disconnect red and
black output terminals
3
Slow flashing
Red Warning!
LED
+
Charging in 6V
Mode(s) for 12V
battery
Please do manually press
Mode button to choose
correct charge mode.
CAUTION: If you choose

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6V LED
12V Mode(s) for 6V
battery, the 6V battery
will be damaged!
4
Only charging
mode LED is on,
warning and
Charged
indicator LED
are flashing
Overheat
protection
Current reduces when
temperature in charger is
too high. After cooling
down, charge will begin
5
Quick flashing
Red Warning!
LED
+
Corresponding
charging mode
LED
Battery cannot
store electric
charge during
charging process
Replace the battery with a
new one immediately
6
Only
corresponding
charging mode
LED
In Desulphation
Process
------
7
Red Warning!
LED light flashes
2x stop for
3secs, 2x stop
for 3 secs…
Battery cannot be
recovered through
Desulphation
Process
Replace with a new
battery
8
Flashing Yellow
Warning! LED
Heavily Corroded
Battery (voltage is
less than 3V), need
to repair
Replace with a new
battery or try REPAIR
Mode for recovery

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Nameplate icon description
:Class II
:For indoor use only
:Before charging, read the instructions
:Fuse
:Correct Disposal of this product
This marking indicates that this battery charger and batterypack should
not be disposed with other household wastes throughout the EU. To
prevent possible harm to the environment or human health from
uncontrolled waste disposal, recycle it responsibly to promote the
sustainable reuse of material resources. To return your used device,
please use the return and collection systems or contact the retailer
where the product was purchased. They can take this product for
environmental safe recycling.
WARRANTY
1) This product is warranted to the original purchaser for a period of two
(2) years from the original shipping date, to be free of defects in material
and workmanship.
2) Warranty Performance: During the above two (2) years warranty
period, a product with a defect will be replaced with a new one when
the product is returned to the manufacturer. The replacement product
will be in warranty for the balance of the original two (2) years warranty

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period.
3) This warranty is void if the product has been damaged by accident, in
shipment, unreasonable use, misuse, neglect, improper service,
commercial use, repairs by unauthorized personnel or other causes not
arising out of defects in materials or workmanship.
Important safety instructions
1)This appliance is not intended for use by persons (including children)
with reduced physical, sensory or mental capabilities, or lack of
experience and knowledge, unless they have been given supervision or
instruction concerning use of the appliance by a person responsible for
their safety.
2)Children should be supervised to ensure that they do not play with the
appliance.
3)If the supply cord is damaged, it must be replaced by the manufacturer,
its service agent or similarly qualified persons in order to avoid a hazard.
3)The battery terminal not connected to the chassis has to be connected
first. The other connection is to be made to the chassis, remote from the
battery and fuel line. The battery charger is then to be connected to the
supply mains;After charging, disconnect the battery charger from the
supply mains. Then remove the chassis connection and then the battery
connection.
4)Do not recharging non-rechargeable batteries.
5)During charging, the battery must be placed in a well ventilated area.