MMG Lithium-Ion Battery: Extremely LIGHTWEIGHT, 50% to 70% lighter than standard batteries. Great power in a little package: 1.98 lbs. weight with high cranking power. Measures: 5.94" x 2.60" x 3.70". No maintenance needed: Long shelf life, up to 1 year before requiring recharging. Long Life – Over 2000 Charging Cycles. Battery capacity indicator light feature. Eco-friendly: No hazardous acid or heavy metals, non-explosive and non-combustible.