M12 Red Lithium 2.0 Compact Battery Pack, 12-Volt Commercial Grade Plugs & Connectors the AA sizes are designed

the AA sizes are designed to protect devices from leakage of fully used batteries up to two years

medium duty

Clear water formula

6-3/8" wide

M12 Red Lithium 2.0 Compact Battery Pack, 12-Volt Commercial Grade Plugs & Connectors the AA sizes are designedM12, 12v, red lithium 2. 0 compact battery pack, features superior pack construction, electronics & performance to deliver more work per charge & more work over pack life, offers 2. 0a hours of runtime, battery runs cooler & performs in climates below zero degrees, compact design fits in tight work spaces & reduces user fatigue, powers most Milwaukee m12 cordless power tools.