ISDT C4 evo, User Manual

* NiZn and LiHv batteries need to be selected manually.

Confirming Battery Types

Usually, the battery chemistry type and the rated voltage are marked on the battery 
sleeve. The charger will attempt to automatically identify the battery type based on 
the built-in detection algorithm, but please select the battery types manually if the 
charger chooses incorrectly. 

Determining Charging Current

Always follow your battery manufacturer’s charging instructions, as it is important 
to know the maximum charging current of the battery. Applying excessive charge 
current may reduce the lifespan of a battery and/or cause damage. 
In addition, excessive currents can cause heating and/or explosion of the battery 
during the charging process. The charging and discharging capacity of a Lithium 
battery is often marked with a C value. Multiplying the charging C value and the 
battery capacity generally determines the maximum charging current supported 
by the battery. For example, for a 1000mAh battery with a charging capacity of 0.5C, 
the maximum charging current is 1000×0.5 = 500mA; therefore, the maximum 
charging current is 0.5A. For a lithium battery, if it is not possible to confirm the 
supported charging C value, please set the charging current below 1C for safety 
and to protect your battery. Charge time will be directly proportional to charging 
current and due to differences in battery conversion efficiency, the time taken to 
complete charging might be extended for different battery types and capacities.

Storage Function

Use the storage function if a battery will not be used for a long period. 
When selecting storage functions, automatic charging will be initiated if the battery 
voltage is lower than the preset storage voltage; likewise, automatic discharging 
will be initiated if the battery voltage is higher than the preset storage voltage.

Cycle Function

In this mode the battery will start a cycle of charging and discharging which can be 
configured up to 30 cycles.

Default battery types and task parameters

Rated Voltage

Full Charge Voltage

Storage Voltage

Discharge Voltage

NiMH           NiZn           LiIon           LiHv               LiFe

3.80V

4.35V

3.80V

3.30V

3.70V

4.20V

3.70V

3.10V

3.30V

3.65V

3.20V

2.90V

1.20V

1.65V

0.90V

1.50V

1.90V

1.30V