1Adopting a 5 series lithium battery-dedicated IC as a processor. 2Real-time detection of battery voltage, charge and discharge current, and ambient temperature. 3Overcharge, overdischarge, discharge overcurrent, short circuit, charge overcurrent, temperature protection, etc. 4Widely used on battery packs for power tools using 18650 lithium batteries. 5High-quality electronic components ensure the stable and reliable performance of the lithium battery protection board.