The makita bl1021b is a 12v cxt lithium ion battery delivering 2.0ah capacity, designed for use with makita's 10.8v and 12v max cxt cordless tool range. This compact power source combines advanced battery technology with practical features for professional tradespeople and serious diy users. Equipped with a 4 stage led fuel gauge, the bl1021b allows you to monitor remaining charge at a glance, helping you plan your work and avoid interruptions. The battery features individual cell monitoring and an integrated protection circuit to safeguard against overloading, over discharging and overheating, extending the battery's service life and ensuring reliable performance on site. Lithium ion technology delivers up to 430 per cent more working capacity during its lifetime compared to ni cad batteries, whilst being 40 per cent lighter than ni mh alternatives. The battery offers anytime charging with no memory effect and requires no discharging before recharging. Its lightweight, shock absorbing construction is ideal for daily use on construction sites, workshop environments and field service applications. Low temperature performance ensures the battery remains functional in cold conditions, whilst minimal power depletion during use or storage maintains consistent output throughout its lifetime. Features and benefits bull 4 stage led battery fuel gauge for quick charge status monitoring bull individual cell monitoring for enhanced battery longevity bull battery protection circuit guards against overload and over discharge bull low temperature performance for reliable operation in cold conditions bull no memory effect allows anytime charging without performance degradation bull lightweight and shock absorbing design for durability on site specifications voltage 12v capacity 2.0ah battery type lithium ion li ion