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 build a battery pack using 10 pieces of INR18650 battery cells, enabling you to DIY the battery capacity of your machine. It is compatible with older devices and features a safe and improved balance detection function, making it ideal for professional use. Technical specifications Type: Battery Storage Box Battery Codes: BL1830, BL1840, BL1850, BL1860, LXT400 Suitable Power Tool Models: 18V Li-ion Cordless Power Tools Color: Black Material: Plastic Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with Makita 18V battery models: BL1830, BL1840, BL1850, BL1860B, LXT 400 Package Contents: 4 x Battery Case Set (some accessories are random) Other information LED Indicator included Note: Light reflection and different displays may cause the color of the item to differ