General description The Fein 92604341020 ProCORE AS 4.0 18V 4.0Ah Li-Ion Battery is designed for trade professionals and DIY enthusiasts who utilize Fein cordless power tools. This battery is part of the AMPShare series, making it compatible not only with all Fein AMPShare cordless tools but also with Bosch Professional 18V cordless systems, providing exceptional versatility and efficiency. Technical specifications Voltage: 18V Capacity: 4.0Ah High-performance: +87% more power Improved copper cell connection Optimized performance with CoolPack 2.0 technology Constant power output even under full load Compatibility and accessories Compatible with all Fein AMPShare cordless tools Compatible with Bosch Professional 18V cordless systems Other information Sold as a single unit Electronic Cell Protection prevents overload, overheating, and total discharge Airtight cells for enhanced durability Significantly smaller size and better weight for improved handling