Powertran® M 8521A Battery C Maintainer 6V/12V 600mA
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1. First make sure your lead-acid battery is a 6V or 12V. Do not charge batteries with different oper-
ating voltages!
2. Disconnect all loads from the battery.
If the battery is installed in a vehicle, turn off the ignition and any other loads.
Observe the instructions and safety information of the vehicle to find out how the vehicle battery
should be charged. Modern vehicles are equipped with sensitive electronic parts and controls that
can be damaged if you do not proceed properly!
3. Connect the battery charger to the power supply (100-240 V~/50/60 Hz).
4. Now you can select a function using the switch button. See the next chapter for a description of
the individual operating modes
5. Then, connect the red battery clamp (+) to the positive (+) battery pole. Connect the black bat-
tery clamp (-) to the vehicle chassis or the negative (-) battery pole.
6. If the polarity is not correct, LED 3 will be lit as a warning.
7. After the charging process, disconnect the battery charger from the mains supply.
8. First remove the clamp from the vehicle chassis or negative terminal and then from the positive
terminal.
Charging a Lead-acid Battery
• Make sure you observe all safety instructions and charging instructions of the
battery manufacturer.
• Before connecting the battery to the battery charger, disconnect the battery from any loads
or cables (turn off the loads first!).
• Always disconnect the ground connection from the battery before disconnecting the
positive terminal.
• Disconnect the battery from the battery charger before connecting any loads to the battery.
• When connecting or disconnecting the battery, sparks might be produced. Therefore, make
sure there is sufficient ventilation!
• Observe the polarity when connecting the battery to the battery charger (red charger
terminal = po, black charger terminal = negative/-).
• Lead-acid batteries contain aggressive and corrosive acids. Avoid skin or eye contact with
battery fluids! Never dismantle lead-acid batteries! On skin contact, clean the affected areas
thoroughly with water and soap. On eye contact, rinse the effected eye immediately with clear
and cold running water! Then consult a doctor immediately!
• Batteries must not be short-circuited or thrown into fire. Risk of fire and explosion!
Notes on rechargeable batteries
