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Charges AA, AAA, C, D & 9 VOLT across ordinary alkaline and rechargeable Ni-Cad, Ni-MH, high power and zinc carbon. Has 6 charging bays featuring a LED monitor indicating battery status & charging level. Extend ordinary, alkaline and nicad batteries life up to 10X. Includes an intelligent micro-processor to independently check the battery status, type and size before reviving the battery life. Saves $$$ and Environment.