This is a charger for 6-series LiFP battery pack, nominally 19.2V (6 x 3.2V), which charge at 21.9 volts (6 x 3.65V). The bulk charge current is 2200 mA. It is a multi-stage li-iron LiFePO4 recharger with universal AC input. Includes a slow start feature and a 4-segment fuel gauge.
These are state-of-the-art battery chargers that can be used on-demand, or left permanently on the battery for maintenance. The slow-start function helps battery cycle life, especially with deeply discharged batteries. The charger is fully isolated from the mains, has universal AC input, and a removable AC cord. Will accurately charge lithium-iron-phosphate packs.

Input:                                   100-240Vac 50/60Hz                                      
Charging mode:                   CC(precharge)-CC(bulk)-CV-Cut off, 4-stage
LED Color:                           red--charging, green--charged/idle                               
Dimension:                           120*67*41mm