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. 4High-quality electronic components ensure the stable and reliable performance of the lithium battery protection board. 5Widely used on battery packs for power tools using 18650 lithium batteries.