Features: Ensure the longevity and safety of your 18V batteries with our battery protection board, designed specifically for BL1830 and BL1850 models, preventing overcharging, over discharge, and short circuiting. Featuring a protective chip, this PCB board delivers stable current output and incorporates a precise battery management system to maintain reliability. Suitable for engineers, technicians, and enthusiasts who regularly batteries in their projects and repairs. This protection board is a must have accessory for anyone using power tool, wireless devices, or household appliances that rely on 18V batteries for performances and safety. Enhancing your efficiency and peaces of mind with our easy to installation battery protection board, a investment for maintaining your equipment's power supply at its best. Specifications: Texture: PCB Voltage: 18V Power: 350W Size: As Picture Shows Package Includes: 1x Charging Protection Board note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.