Features: This universal accessory with an 18V21V battery display is a must-have for anyone who values knowing their battery life at all-times. Made from durable PCB- material, this backlit device comes in a compact and convenient point-shaped design that effortlessly fits onto any compatible casing. Ideal- for DIY enthusiasts, professional tradespeople, and anyone who uses power tools regularly, this electric display is suitable for wide range- of users. Whether you're working on a construction site, in your garage, or out in the field, this versatile battery display can help keep you informed about your tools battery life at all-times. With its easy-to-read display and simple installation process, this universal accessory is a game-changer for anyone looking to stay on top of their power tool game. Specifications: Material: PCB- Voltage: 18V 21V Model: Battery Indicator Type: Backlight- (Device) Light Source Shape: Point Shape Type of Light Source: LAMP- Package Includes: 1x Battery Capacity Indicator note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.