M18 18 Volt Lithium-Ion Cordless REDLITHIUM XC 5.0Ah Extended Capacity Battery Pack - 10 Piece

Delivers up to 2.5X more run-time, 20% more power and 2X more life than standard lithium-ion batteries. The M18 REDLITHIUM XC 5.0 extended capacity battery pack features superior pack construction, electronics, and performance to deliver more work per charge and more work over the life of the pack than any battery on the market.