1. Drop protection: the battery without output. 2. Integration : integration . 3. Small body and big energy: the new MOS tube has low internal resistance. 4. Stable heat dissipation: open heat dissipation is more stable. 5. Over-voltage protection: to prevent excessive battery pressure. 6. Over-discharge protection: prevent the battery from over-discharging. 7. Three anti-silicone: dust-proof, moisture-proof and anti-static, safe to use. 8. Temperature control protection: electronic NTC over-temperature protection, to use. Item Name:Power battery protection board Accessory Type: Battery Accessories Model Number: SDA151 13S 48V 20A - Lithium Battery Board Product name: SDA151 13S 48V 20A - Lithium Battery Protection Board BMS Pcb Application: Lithium Battery rechargeable battery packs and, ebike battery IC: ML5245 MOS: CRSS052N08N/CRSS063N08N color:As shown Material:PC+Metal Package Contents: 1 x Protection Board Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.