AEG - Pro Lithium Battery 18 V PRO18V 4.0 Ah Compatible with all PRO18V and SUBCOMPACT Pro-Lithium tools and 100% Backward Compatible - 3 Year Warranty - Long Battery Life and Performance - L1840S

[High Power & Runtime]: 4.0Ah battery provides high power and extended runtime, allowing for extended use without interruption, ideal for extended work on construction sites or at home [PRO18V Compatibility]: Compatible with all tools in the AEG PRO18V range, this battery offers exceptional versatility, allowing users to easily switch between tools without the need for specific batteries for each device [Lightweight and Compact Design]: Its light weight and compact design reduce user fatigue, providing optimal user comfort even during long working sessions, while maintaining great power [ADVANCED PROTECTION]: Featuring multiple protection mechanisms, including thermal protection, overload protection and individual cell protection, this battery ensures the safety of the tool and extends its service life [LED Charging Indicator]: LED charge level indicator allows users to quickly and easily check the remaining charge level, providing better power management and more efficient work planning