Features: Universally compatibility for 10.8V 12V BAT412A BAT413A BAT411 battery systems, this replacement shell set features 6cell protections board for enhanced safety and extended battery lifespans in demanding applications. Engineered with high strength plastic construction, the durability casing resists impacts and abrasion while safeguarding battery components from environmental stressors like dust and moisture. Ideal for professional tradespeople, enthusiasts, and users requiring reliability power solution for power tools during construction projects or outdoor adventures. Optimized for ruggeds worksites, emergencies repairs, and mobile operations where quick battery maintenance and robust electrical protections against overcharge/short circuits are critical. precise molded battery shell replacement set combines industrial grade durability, delivering seamless integration for lithium batteries rebuilds and upgrades. Specifications: Component: Plastic Size:Approx.6.3x8.3x10.7cm/2.48x3.27x4.21inch for 10.8V 12V BAT412A BAT413A BAT411 Features: Builts-in protections board to effectively prevent overcharge, over-discharge and short circuits Use scenario: Suitable for repair and replacement of power tool batteries to ensures the normal operate of the equipment Package Includes: 1pc Protective Shell note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.