Our M12 REDLITHIUM XC6.0 Battery delivers up to 3X more runtime, 20% more power and 2X more recharges than standard lithium-ion batteries. Our M12 REDLITHIUM XC4.0 Battery delivers up to 2X more runtime, 20% more power and 2X more recharges than standard lithium-ion batteries. The lithium-ion battery pack features superior pack construction, electronics and performance giving you more work per charge and more work over pack life than any battery on the market.