VMAXTANKS BC8S1205A, BC8S1207A, BC8S1210A, BC8S1212A, BC8S1215A Instruction Manual
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8-STAGE AUTOMATIC
BATTERY CHARGER & MAINTAINER
MCU CONTROLLED & HIGH FREQUENCY SWITCHMODE
P/No. BC8S1205A、BC8S1207A、BC8S1210A、BC8S1212A
BC8S1215A、BC8S1220A、BC8S2405A、BC8S2410A
Instruction Manual
Please read user manual carefully before use.
1. WARNING
◆ Explosive gases may escape from the battery during charging. Prevent
flames and sparks. Provide adequate ventilation.
◆ Before charging, read the instructions.
◆ For indoor use. Do not expose to rain.
◆ For charging 12v agm gel and sla batteries.
◆ Disconnect the 110V/220-240V AC mains supply before making or breaking
the connections to the battery.
◆ The battery charger must be plugged into an earthed socket-outlet.
◆ Connection to supply mains is to be in accordance with National wiring rules.
◆ Do not attempt to charge non-rechargeable batteries.
◆ Never charge a frozen battery.
◆ If the AC cord is damaged do not attempt to use. It must be replaced or
repaired by a qualified person.
◆ Corrosive substances may escape from the battery during charging and
damage delicate surfaces. Store and charge in a suitable area.
◆ Ensure all vehicle accessories including lights, heaters, appliances etc are
turned off prior to charging.
◆ This appliance is not intended for use by young children or infirm persons
unless they have been adequately supervised by a responsible person to
ensure that they can use the appliance safely.
◆ Young children should be supervised to ensure that they do not play with the
appliance.
2. FEATURES
8-STAGE AUTOMATIC CHARGING
This is a fully automatic battery charger with 8 charge stages.
Automatic charging protects your battery from being overcharged. So you can
leave the charger connected to the battery indefinitely.
8-stage charging is a very comprehensive and accurate charging process that
gives your battery longer life and better performance compared to using
traditional chargers.
8-stage chargers are suitable for most battery types including WET, MF, Calcium,
AGM, and GEL batteries. They may also help restore drained and sulphated
batteries.
The 8 stages are:
Desulphation ; Soft Start; Bulk; Absorption; Analyse; Recondition; Float. And Pulse.
1
The 8-stages are:Desulphation ; Soft Start; Bulk; Absorption; Analyse; Recondition; Float and Pulse.
V
1 2
3
5
4
7
6
8
A
STEP 1
REMOVES HARMFUL
SULPHATE DEPOSIT
BEFORE CHARGING
BEGINS
1
DESULPHATION
2
SOFT START
3
BULK
4
ABSORPTION
5
ANALYSE
6
RECONDITION
7
FLOAT
8
PULSE
STEP 2 STEP 3
SOFT START INCREASES
BATTERY LIFE BY GENTLY
STARTING TO CHARGE
THE BATTERY.
MAIN CHARGING
BATTERY
IS CHARGED
T0 80%
STEP 4
TOP CHARGE
YOUR VEHICLE
CAN BE STARTED
AFTER THIS STEP
STEP 5
TESTS
WHETHER
THE BATTERY CAN
RETAIN A CHARGE
STEP 6
RECONDITIONS
DEEPLY
DISCHARGED
BATTERIES
STEP 7
FULLY CHARGED
BATTERY
GEL AGM WET CALCIUM LIMIT
11V/22V 11V/22V 11V/22V
Half the rated
until 12.5V/25V
100%
Current until
14.1V/28.2V
Constant
14.1V/28.2V
until current
drops to15%
Checks if
voltage drops
to 13.2V/26.4V
Constant
current (15%)
limited to
14.1V/28.2V
13.7V/27.4V
100% Current
During 12.6V-
14.1V/25.2V-
28.2V , the
current control
at 100%~20%
Half the rated
until 12.5V/25V
100%
Current until
14.4V/28.8V
Constant
14.4V/28.8V
until current
drops to15%
Checks if
voltage drops
to 13.2V/26.4V
Constant
current (15%)
limited to
14.4V/28.8V
13.7 V/27.4V
100% Current
During 12.6V-
14.4V/25.2V-
28.8V , the
current control
at 100%~20%
Half the rated
until 12.5V/25V
100%
Current until
14.7V/29.4V
Constant
14.7V/29.4V
until current
drops to15%
Checks if
voltage drops
to 13.2V/26.4V
Constant
current (15%)
limited to
16V/32V
13.7V/27.4V
100% Current
During 12.6V-
14.7V/25.2V-
29.4V , the
current control
at 100%~20%
2
11V/22V
Half the rated
until 12.5V/25V
100%
Current until
14.7V/29.4V
Constant
14.7V/29.4V
until current
drops to15%
Checks if
voltage drops
to 13.2V/26.4V
Constant
current (15%)
limited to
16V/32V
13.7V/27.4V
100% Current
During 12.6V-
14.7V/25.2V-
29.4V , the
current control
at 100%~20%
Max 8h
Max 8h
Max 24h
30 minutes
90Sec
30 min or 4h
de pending on
battery voltage
(Calcium model
must enter
Recondition stage)
10 days Charge
cycle restarts if
voltage drops*
Charge cycle
restarts if
voltage drops
STEP 8
MAINTENANCE
CHARGING
Desulphation
The Desulphation stage may break down sulphation that occurs in batteries that
have been left flat for extended periods of time, returning them back to full charge.
Sulphation occurs when lead-sulphate hardens and clogs up the battery cells.
Soft Start
A preliminary charge processes that gently introduces power to the battery.
This protects the battery and increases battery life.
Bulk (Constant Current)
Charging with maximum current until approximately 80% battery capacity.
Bulk mode for the charging cycle. The start phase continues until the battery's
terminal voltage has risen above the set limit, at which point the charger
switches to bulk charging. If the terminal voltage has not passed the voltage
limit within the time limit, the charger switches to fault mode (Step 3 lamp solid)
and discontinues the charging. If so, the battery is faulty or its capacity is too large.
Absorption (Constant Voltage)
Charging with declining current to maximize up to 100% battery capacity.
Analyse
An automatic battery test is conducted immediately after the absorption stage.
The test monitors the voltage for 90 seconds to determine if the charge was
successful.
◆12V charger If the voltage is below 13.2 volts (fail), the charger will initiate the
Recondition stage.
◆12V charger If the voltage is above 13.2 volts (pass), the charger will proceed
to the final stage: Float.
◆24V charger If the voltage is below 26.4 volts (fail), the charger will initiate the
Recondition stage.
Recondition
Choose the Recond program to add the Recond step to the charging process.
During the Recond step voltage increases to create controlled gasing in the
battery. Gasing mixes the battery acid and gives back energy to the battery.
This recondition stage can recover batteries from a deeply discharged state
increasing performance and battery life.
RECOND - This mode is used to recover deep discharged flooded batteries
where you could expect a stratified acid (high acid weight in the bottom, low on
top). Check with battery manufacturer when in doubt.
Use this mode with care, because the high voltage will cause some water loss.
16V/32V is normally no problem for electronics in 12V/24V system. Consult
your supplier when in doubt. Life of light bulbs will be reduced at higher voltage.
Try to disconnect light from the battery during this phase. Maximum effect and
minimum risk for electronics is achieved by charging a disconnected battery.
3
Float
The Float stage maintains the battery at 100% charge without overcharging or
damaging the battery. This means the charger can be left connected to the battery
indefinitely.
Pulse
Maintaining the battery at 95-100% capacity. The charger monitors the battery
voltage and gives a pulse when necessary to keep the battery fully charged. The
battery charger has an 8-step fully automatic charging cycle. The cycle is repeated
infinitely. If the terminal voltage drops below a lower limit, the charger automatically
goes back to the beginning of the charging curve.
3. SWITCHMODE TECHNOLOGY
Using the latest technology in battery chargers, switch mode chargers convert
110V/220-240V AC power to 12V/24V DC power using electronic components
unlike traditional battery chargers that rely on heavy transformers. This allows
the charger to be light weight and compact without sacrificing on performance.
4. PROTECTIVE FEATURES
POLARITY PROTECTION
Prevents the output leads from sparking due to accidental reverse connection or
short circuit, making the charger safer to use around batteries.
OUTPUT SHORT PROTECTION
Short circuit connection of the clips: Check clips are not touching each other OR
Check the clips are correctly connected to the battery.
NON BATTERY LINK PROTECTION
If battery charger connects with non battery load, it will go into protection state.
DISCONNECT PROTECTION
The charger has entered the energy save mode. This happens if the charger isn't
connected to the battery in 2 minutes.
OVER VOLTAGE PROTECTION
The 12V charger will automatically protection if the voltage is higher than 17.5V.
The 24V charger will automatically protection if the voltage is higher than 35V.
OVER TEMPERATURE PROTECTION
Internal temperature is above 65OC +/-5OC
COOLING FAN
The charger is fitted with a thermostatically controlled fan to cool onboard
electronics and maintain charging performance. The cooling fan will engage
automatically when there is a high load on the battery or there is sufficient heat build
up.
4
5. PRODUCT OVERVIEW
The 8-stage automatic charging consists of the following components:
1.Mode button
2.Stage lamp status display indicates power, charging and fully charged.
3.Power lamp
4.Fault lamp
5.Output voltage meter
6.Battery mode lamp
7.DC leads.
8.Power Cord
9.Thermostatically controlled cooling fan.
10.Ground terminal
11.Mounting flange.
12.Ventilation hole
13.3.5mm mounting hole.
3
11
12
5
4
2
1
9
7
8
6
5
10
13
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