The Husqvarna 40-B70 is a lightweight 2-Ah battery with fast charging capability, designed for private use with the complete Husqvarna 100 series. It offers good capacity and runtime while being very lightweight. Due to its low weight, the battery is best suited for applications such as hedge trimming or lawn mowing. It features excellent active cooling during demanding tasks and while fast charging, as well as an intuitive 4-LED charge indicator. The battery can be recharged up to 600 times. However, it is not compatible with the 100 series battery chainsaws, 535iFR/iRXT, 550iBTX, K 535i, LB 146i/442i/448i/548i/553iV, LC 141iV/141VLi/247i/247iX/247Li/347iVX/347VLi/353iVX/551iV, and S138. The 530iBX and 536LiBX can only be used in conjunction with the Flexi battery belt.