Description And Operation: Description: Recharging

Check the battery condition

The battery condition cannot be determined solely on the basis of the battery charge state. If there is a suspicion of a damaged battery, check the battery condition whit battery tester and investigate the cause by means of the test module. With a low battery charge state, recharge the battery.

Recharging the AGM battery

The battery may be charged using the battery chargers at a constant charge voltage of 14.8V.

If possible, the battery temperature during charging should be between 20°C (68°F) and 30°C (86°F).

Only chargers with voltage clamping (IU or WU curve) may be used or chargers with IUoU curve which have a trickle.

IU or WU charging technique

Optimized charging voltage for IU or WU: 14.7V (at 20 - 30°C (68 - 86°F)) about 24 hours

Min. charging voltage at 20°C (68°F): 14.4V

Max. charging voltage at 20°C (68°F): 14.8V

10% of capacity is recommended as charging current (e.g. 60Ah: 10 = 6, 0A charging current).

WARNING: Do not charge the AGM battery with > 15.2V. No quick-charging routines.

CAUTION: If the battery is charged directly at the battery terminals on vehicles with battery sensor, misinterpretations of battery condition and under certain circumstances also unwanted Check Control messages or fault memory entire can occur.
After recharging finished, let the battery stand for over 10 hours with normal temperature for battery stabilization.