Product selling point:1: Wide range of applications2: charging and discharging safety3: High-quality MOS tube is impact-resistant and has low temperature rise4: New integrated solution, high-quality low-resistance MOS, 18650 protection board,5: Use with confidence, peace of mind and safety.Nine layers of protection filter danger:1. Overcharge protection: prevent the battery from being overcharged2. Small version of the masterpiece: upgraded MOS with low internal resistance3. Moisture protection: three-proof silicone to prevent moisture4. Over-discharge protection: prevent the battery from being over-discharged5. Overcurrent protection: prevent the battery current from being too large6. Short circuit protection: automatic protection when the product is short circuited7. High-quality MOS tube: the core composition is essential8. Static protection: three-proof silicone to prevent dust9. Dust protection: three-proof silicone electrostatic protectionPackage Included:1* Lithium battery protection board