The 18V 4.0Ah Lithium Ion Battery BSL1840M (378681M) is a powerful, long-lasting battery for all of the Metabo HPT 18V Slide-type power tools. It delivers increased productivity and run-time thanks to the large 4.0 Amp Hour (Ah) capacity. The Amp ... 

- TYPE: Slide Type 18 Volt battery technology- AMP HOURS: 4.0 Ah runtime capacity- LITHIUM ION: 50% lighter than most NiCd batteries to reduce user fatigue- LIGHTWEIGHT: At 1.3 lbs- 30% LONGER RUN TIME: Compared to BSL1830 3.0Ah battery- BATTERY CHARGE INDICATOR: Shows remaining battery power level- APPLICATION: For use in 18 Volt Metabo HPT power tools- MULTIPLEX PROTECTION CIRCUIT: Prevents over-load, over-charge and over-discharge- WARRANTY: Covered by Metabo HPT's two-year Lithium-Ion battery warranty- COMPATIBLE: Metabo HPT charger models UC18YSL3, UC18YFSL, UC18YKSL and UC18YTSL (not included)