BGS technic KG
Bandwirkerstr. 3
D-42929 Wermelskirchen
Tel.: 02196 720480
Fax.: 02196 7204820
mail@bgs-technic.de
www.bgstechnic.com
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Charging function
1. RESET
When connected to the rating supply, the device will reset itself automatically at the very
beginning, and stays at standby state if there is no further action is executed by the user.
2. MODE1 (14.5V/0.8A)
This mode is fit for charging those small batteries with a capacity of less than 14AH. Before
charging the battery, connects the output terminals of the charger to the battery first with the right
polarity and then press the button to select the right mode. After executing this operation, the
corresponding LED1 will be light up. In the coming defined interval, if no further operation is
conducted, the electronic switch will turn on automatically together with LED5, and then start the
charging course with 0.8A+/-10% current. If everything is ok, LED5 will be on during the whole
charging course till the battery is charged up to 14.4V+/-0.25V. When the battery is full charged,
the LED6 will turn on instead of LED5, and now a trickle current is available to maintenance the
battery.
3. MODE2 (14.5V/ 4.2 A)
This mode is mainly applied for charging those batteries with larger capacity of more than 14AH in
normal condition. Before charging the battery, connects the output terminals to the right polarity
first and then select the desired mode. In the coming defined interval, if no further action is
conducted by the user, then the electronic switch will turn on together with LED2 to start the
charging course with 4.0A +/-10% current. Similar with mode, LED5 will be on in the whole
charging course if everything is ok. When the battery is charged up to 14.4V+/-0.25V, it changes
to trickle charging mode to maintenance the battery, and now LED5 is shut off and LED6 is on.
4. MODE3 (14.7V/4.2A)
This mode is established for charging those batteries with larger capacity of more than 14AH in
cold condition or charging some AGM batteries with capacity of more than 14AH. Before charging
the battery, connects the output terminals to the right polarity of battery first and then press the
button to select mode3. Once the desired mode is selected, the corresponding LED3 turns on
immediately, and then turns on the electronic switch after a defined delay to start the charging
course if no further action executed by the user. In this mode, the charging current is the same as
mode2. If everything is ok, LED5 will turn on together with the electronic switch and keeps this
state till the battery is charged up to 14.7V+/-0.25V. When this point is arrived, the charger
changes to trickle mode to maintenance the battery. Now LED5 is shut off and LED6 turns on to
indicate current state.
5. Rescue dead battery
When being connected to a battery and starting the charging course, the charger detects the
voltage of the battery automatically and then changes to pulse charging mode if the voltage is
within the range of from 7.5V+/-0.5 to 10.5V+/-0.5. This pulse charging course won’t stop until the
battery voltage rises to 10.5V+/-0.5. Once this point is arrived, the charger changes to the normal
charging mode selected by the user at the beginning and now the battery can be charged up fast
and safely. Through this method, most of dead batteries can be rescued
6. Abnormality protection
Whenever appears one of the following abnormal occasions, such as short circuit, battery voltage
below 7.5V+/-0.5V, open circuit or reverse connection of the output terminals, the charger will turn
off the electronic switch and resets the system immediately to avoid damage. If there is no further
order received, the system will remains in the standby state. Additionally, once reverse connection
happens, another LED7 will be on to indicate the mistake.
7. Temperature protection
During the charging course, if the charger is too hot for some reason, it will reduce the output
power automatically to protect itself from damaging.
8. Shift between the three modes
When user press down the selection button, the charging mode will shift in order like this: standby
Standby → Mode1 → Mode2 →Mode3 and then start the next cycle. Every time when the user
pressing down the button, it will shift to the next mode and then execute it. However, if a battery is
not disconnected from the charger when full charged, it will remain the trickle charging mode even
if the user shifts the charging mode, which is useful for protecting the full charged battery from
damage.
