Speed up construct and installat: The new design concept, the lightweight design configurat is rich and complete, so that you can build smoothly Intellint MCU chip, communicat control for each battery unit, real-time accurate monitoring of battery current, and temperature control. With over dischar protect, overload protect, overheat protect, and anti-overchar protect When expanding the mouth, press the handle switch first, and then tap the elastic switch to turn on the machine LED white light sweeping the night: equipped with energy-saving high-lighted LED light beads night work easier Integrated design is easy to store tools: it is more practical to carry in one box For high-value items, customs clearance in your country requires your cooperation; please be advised. Welcome and I wish you a happy life, my friend., Manufacturer: DCDCD