EBL add mix-protection additive to the negative pole of batteries, protect the material from degradation in the progress of charge and discharge, extend lifespan up to 1200 cycles.Low self-discharge batteries will remain 85% juice when you leaving it for no use 1 yearNi-MH high quality cell, no memory effect, can be charged and used at anytime.Embedded seal structure, ultra slim and make more inner space, using DBCK steel shell which can protect the battery against explosion due to overpressure.Biggest Save - best products but lowest price, and efficient customer service always here to help.