General description Plastic Case Charging Protection Circuit Board PCB designed for Makita 18V batteries (BL1840, BL1850, BL1830, BL1860B, LXT 400). This high-quality product allows you to DIY the battery capacity of your machine and is compatible with older devices. It helps in repairing and assembling battery packs while providing improved balance detection functionality. Technical specifications Type: Battery Storage Box Battery Codes: BL1830, BL1840, BL1850, BL1860, LXT400 Color: Black Material: Plastic Can accommodate 10 pieces of INR18650 battery cells Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with 18V Li-ion Cordless Power Tools Package includes: 3 x Battery Case Set (some accessories are random) Other information Features an LED indicator Note: Light reflection and different displays may cause slight color variations