the charger is capable of charging or discharging in storage charge mode depending on the voltage when connected. Here are the specs i got off a main.
Specifications:
Input Voltage: AC 110V-240V, DC 11V-18V
Charge Current: 0.1-5A, 0.1A step
Discharge Current: 0.1-1A, 0.1A step
Power Supply Output: 5A
NiCd/NiMH Cells: 1-15 Cell
LiPo/Li-ion/LiFe Cells: 1-6 Cell
Lead-acid (Pb): 2-20V
Temperature Sensor Port: Yes
USB Port: Yes
Balance: 2-6 Lithium Cells
Case: aluminum
Display: 16x2 character LCD
Dimension: 135x125x34mm

the instructions dont give much info.