Bosch Core18v 6.3 Amp Hour Lithium Power Tool Battery Kit (Charger Included) Hanging Porch Light side jams and seals that 91111 side jams and seals that have been incorrectly cut or damaged offer applies to a one time replacement per customer per installation A: Main tube with a fast charge to 80% and the remaining 20% normal mode BC1880 – has a cooling fan to protect the battery from overheating while charging and providing performance comparable to batteries that are up to 35% larger CORE18 V – features 100% backward and forward compatibility with all Bosch 18 V tools and chargers CORE18 V – works in cold weather conditions down to 4 ° F BC1880 – features regulated dual mode charge for cell protection