5S 15A Liion Battery BMS 18650 Protection Board with Cable for Power Bank Charging

Product: 5S Liion Battery Protection Board BMS 15A with Wire Cable Overview A compact protection board designed for 5S Liion battery packs using 18650 cells. The board manages charging and discharging, provides multiple protection modes, and includes a wire cable for integration into power bank and battery pack projects. Key benefits Protects battery pack from overcharge, overdischarge, overcurrent and short circuit conditions to extend usable life and prevent damage. Low quiescent currents minimize self discharge when the pack is idle. Compact size and included cable simplify installation in portable power banks and DIY battery packs. Configurable protection thresholds and timing options allow flexibility for different applications and load profiles. Auto recovery after fault removal reduces the need for manual reset once conditions to normal. Main specifications Type: Protection board for 5S Liion (18650) battery pack Condition: Size: approx. 60 x 23 mm Color: as picture shows Charging voltage (pack): 21 V Charge MOS pressure value: 35 V Discharge MOS pressure value: 35 V Charging current (MOS rating): 56 A Continuous discharge current: 15 A Over current protection: selectable 50 / 55 / 60 A Over current protection delay: selectable 20 / 25 / 30 ms Single cell operating current: 30 uA Single cell standby current: 3 uA Single cell overcharge detection voltage: 4.18 4.22 V Overcharge recovery voltage: 4.05 4.15 V Overcharge detection delay: selectable 0.5 / 1.0 / 2.0 s Single cell overdischarge detection voltage: 2.75 2.85 V Overdischarge recovery voltage: 2.90 3.20 V Overdischarge detection delay: selectable 0.5 2.0 s Short / overcurrent / overdischarge protection recovery: automatic after removal of load or fault Short circuit protection delay: selectable 200 / 500 / 600 us Resistance between B and P: approx. 5 mOmega Continuous 15 A current maximum temperature rise: 25 C Working environment humidity: up to 98 percent relative humidity for long term stability Working environment temperature range: 30 to 80 C Package contents: 1 x protection board, 1 x wire Functional details Multilevel protection: Monitors each cell and the overall pack to detect and react to overcharge, overdischarge, overcurrent, and short circuits. Automatic recovery: After removal of an overcurrent, short circuit, or overdischarge condition and removal of the fault or load, the board will auto recover without manual intervention. Low idle consumption: Percell operating and standby currents are extremely low to preserve stored energy when not in use. Configurable thresholds and delays: Overcurrent, overcharge, overdischarge, and short circuit detection include selectable threshold and timing options to match different application requirements. Robust MOSFET ratings: charge MOS rating and MOS parameters support higher transient currents while limiting sustained discharge to continuous 15 A for thermal stability. Compatibility and use Designed for 5S Liion battery packs made from 18650 cells or equivalent cylindrical Liion cells. Suitable for use in portable power banks, DIY battery packs, solar backup modules, and small portable devices requiring battery protection and charge management. Not a charger by itself; designed to work with appropriate chargers and power sources that match the 5S pack charging voltage of 21 V. Typical applications Power bank construction or : Integrate the board into a 5S 18650 power bank to manage charging, discharging, and protection for safe operation. Portable electronics and backup power: Use in small battery packs for portable speakers, LED lighting, or emergency backup modules where compact size and reliable protection are needed. DIY battery projects: Ideal for hobbyist battery pack assemblies and testing rigs that require configurable protection settings and low standby drain. Installation notes Confirm correct wiring polarity and secure connections to B, P and cell terminals before applying power. Ensure charger voltage and current are compatible with a 5S Liion pack and the board specifications. Allow 1 to 5 mm measurement tolerance for physical dimensions. Item color shown in photos may vary slightly due to monitor differences. Package contents 1 x protection board 1 x wire This protection board provides configurable, reliable protection tailored for 5S Liion 18650 battery packs in compact portable applications.