Charging Battery

→ Avoid contact with hot parts or sources of ignition.

→ Use suction to remove ignitable vapours.

→ Attach warning sign in a clearly visible position.

Information 

• A battery charger is required. 
• Read operating instructions for the charger. 
• The battery must have a minimum temperature of 0 °C. 
• If possible, do not rapid-charge batteries as this can damage them. 
• If exhaustively discharged batteries are charged quickly, they will not take up a charge current or they will be identified too early as full due to the so-called "surface charge". 

→ Always connect a battery charger for providing an external power supply or for jump-lead starting to the defined connections in the engine compartment. → WM 2X00IN BATTERY TRICKLE CHARGING

1. Switch off battery charging device.
2. Switch off ignition and remove ignition key.
3. Connect wires from the charger to the external power supply points.
4. Set the charge current on the battery charging device according to the battery capacity.
5. Switch on battery charging device.

   Procedure for charging exhaustively discharged batteries: 

   Batteries which are not in operation for a long period of time discharge.

   A battery is exhaustively discharged if the open-circuit voltage has sunk below 11.6 V. see OPEN-CIRCUIT VOLTAGE MEASUREMENT 

   In exhaustively discharged batteries, the battery acid (sulphuric acid and water mixture) consists of virtually only water, as the sulphuric acid proportion is considerably reduced.

   Exhaustively discharged batteries sulphatise, i.e. the entire plate surfaces of the batteries harden.

   If exhaustively discharged batteries are immediately recharged after an exhaustive discharge, the sulphatisation recedes again.

   If these batteries are not recharged, the plates continue to harden and charge take-up ability is limited. A reduction in the battery performance is the result.

   Exhaustively discharged batteries must be charged with a low charge current as follows:

   • Set charge current to maximum 10% of battery capacity, i.e. with a 95 Ah battery the charge current is max. 9.5 A.
6. Charge battery.