EBL 906 Smart Charger for AA AAA C D 9V Rechargeable Batteries with 4 Pieces 5000mAh C Rechargeable Batteries This charger can recharge or discharge for 1 to 4 pieces of AA/AAA/C/D Ni-MH Ni-Cd batteries,charge for 1 to 2 pieces of 9V Ni-MH Ni-Cd batteries Unique designed with LCD display screen to indicate the battery(AA/AAA/C/D Ni-MH Ni-Cd batteries) status: Charge, Discharge, Full or Bad. The LED indicators is for 9V Battery only. Press the blue discharge button to discharge mode,automatically turn to charging mode when fully discharged With negative delta V (- V) cut-off function (except for 9V batteries),with safety timer control for overcharge protection ,with short circuit protection ,with non-rechargeable/bad cell detection Intelligent microprocessor controlled,built-in microcomputer chip will convert the charging mode from fast charging to trickle charging when batteries are nearly full charged which ensure the batteries are fully charged