This is a charger for 5-series LiFePO4 (lithium ferro phosphate) battery pack, nominally 16V (5x3.2V), which charge at 18 volts (5 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.. It uses energy-saving techniques and and and advanced charge precision. 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 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