Panasonic launches its Cobalt Lithium-Ion impact driver the EY7540. With its incredibly light weight, impressive power & run time its sure to be a fast seller. Panasonics Cobalt Lithium-Ion batteries benefit from a lower internal resistance (electrical loss) than manganese lithium , which are the most widely used lithium batteries. High electrical efficiency lets cobalt lithium batteries deliver greater output than manganese lithium batteries.

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