EBL Advanced LCD Battery Charger for AA & AAA Ni-MH Ni-CD &ndash; Blue Color Individual on each slot, support charging batteries by even and uneven, 1/2/3/4 batteries. Discharge function, only press the orange button to transfer to discharge mode (Will auto turn to charge mode after discharged fully) Unique algorithm to detect bad or defective batteries and cease charging automatically Advanced LCD technology to indicate the charging progress of the batteries