Husqvarna 40-B140 is a fast-charging 4 Ah battery designed for part-time use, offering high capacity and long runtime. The high-performance cells ensure continuous power output in various climates and applications. It features excellent active cooling for demanding work and during fast charging, along with an intuitive 4-LED charging indicator. This battery is rechargeable up to 600 times. It is not compatible with models 550iBTX, K 535i, LB 442i/448i/548i, and LC 551i. The 530iBX and 536LiBX can only be used with the FLEXI battery harness (plug-in kit). This battery fits the following models: Chainsaws: 120i, 340i; Hedge trimmers: 120iTK4-H, 215iHD45; Lawn trimmers: 110iL, 215iL, 325iLK; Leaf blowers: 120iB, 325iB, 340iBT.