The MIBOXER C4-12 has different charging features and modes according to different type battery charging. It comes with standard Li-ion battery charging mode when work with Li-ion/IMR/INR/ICR batteries and uses a full charge mode for Ni-MH, Ni-Cd batteries charging process.
The Nitecore I4 automatically selects the appropriate amount of current and voltage based on battery type and capacity, but you can also use the V button to set charging voltage in each slot independently (use this feature to charge 3.7V and 4.35V batteries). The C button allows you to assign the full 1500mAh output to an individual high-capacity battery, such as an 18650 or 26650, for fast charging. Once a given battery is fully charged, the New i4 diverts its power to other cells in the charger, speeding up their charge times, a feature known as Active Current Distribution. Unlike many chargers, this unit is capable of reviving most depleted IMR batteries, and monitors their charging closely to prevent safety hazards from overcharging.