The Antigravity AT7B-BS RS battery is built with groundbreaking RE-START Technology (built-in jump-starting) so you won’t ever get stranded with a dead battery again! This compact, lightweight Lithium-Ion battery directly replaces the OEM YT7B-BS and other similar size batteries. 180 CA, 8 Ah (Pb Eq). Additional Features: SIZE: Direct replacements for the OE battery with the same case dimensions and connectors, providing a perfect fit and 70-80% weight savings BETTER STARTING: Larger ignition spark and higher voltage on the starting pulse than a lead/acid battery NO MAINTENANCE: No liquids to spill and no trickle charging necessary to keep the battery charged DURABLE: Will not be damaged by vibration or heat like a lead/acid battery while also being completely waterproof NON-TOXIC: Chemical make-up does not contain highly toxic materials such as acid or lead WARRANTY: Manufacturer’s three-year limited warranty to the original purchaser OptiMate Lithium-Iron Battery Charger, sold separately, required for charging this battery. WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov .