Charger Cuve

Our standard chargers are developed to perform the charge curve Wa, described by the norm DIN41774.

In the Wa charge curve (see diagram), the current of charge follows a decreasing curve, while the voltage of the battery grows.

In order to charge the battery correctly, it's very important to have a charger which performs a charge curve very similar to the theoretical Wa.

The charge must start with a current level of about 16% of the battery capacity (Ah). After some hours, when the battery voltage reaches the value of 2.40Volt/cell ("gassing" voltage), the current level must be about 50% of the initial current. When the battery voltage reaches the value of 2.65-2.70 Volt/cell, the current level must be about 25% of the initial current. At this point the charge is normally completed.