5S 18.5V 15A Li-Ion Lithium Battery Protection Board is a BMS (Battery Management System) designed to protect and manage 5-cell lithium-ion battery packs. It ensures safe charging, discharging, and cell balancing, making it ideal for custom 5S battery packs used in DIY projects, e-bikes, power tools, and energy storage systems.
Key Features:
- Overcharge Protection: Automatically disconnects charging once cell voltage exceeds safe limits.
- Over-discharge Protection: Prevents deep discharge to extend battery life.
- Short Circuit Protection: Instant shutdown in case of output short-circuit conditions.
- Overcurrent Protection: Stops discharging when output exceeds 15A.
- Cell Balancing: Passive balancing maintains equal voltage across all 5 cells.
Technical Specifications:
- Battery Type: 5-cell (5S) Li-ion or Li-Po
- Rated Voltage: 18.5V (5 × 3.7V)
- Max Charging Voltage: 21V (4.2V × 5)
- Continuous Discharge Current: 15A
- Instantaneous Current: Up to 30A
- Overcharge Protection Voltage: 4.25V ±0.05V per cell
- Over-discharge Protection Voltage: 2.7V ±0.1V per cell
- Overcurrent Protection: ~60A peak (instant cut-off)
Mechanical Specifications:
- Board Dimensions: Approx. 55mm × 45mm × 3mm
- Mounting Holes: 4 holes for secure fitting to enclosures or pack
- PCB Type: High-quality FR4, double-sided, with thick copper traces
Wiring and Pinout:
- B+ and B-: Connect to battery pack terminals
- P+ and P-: Connect to charge/discharge terminals
- B1 to B4: Connect to respective cell taps between batteries
- Cell Sequence: Maintain correct order: B1-B2-B3-B4-B5-B-
Datasheet and Documentation:
- Search “5S 15A Li-Ion BMS Protection Board PDF datasheet” for technical reference
Applications:
- DIY Lithium Battery Packs: Ideal for e-bikes, scooters, RC devices
- Solar Energy Systems: Protects Li-ion battery banks from overcharging/discharging
- Power Tools: Safely manage high-drain 5-cell packs
- Inverter Backup Systems: Improves battery longevity in UPS setups
Equivalent Models:
- HX-5S-A01: Widely used 5S 15A BMS module with similar layout
- DW01 + 8205S Based Boards: Common protection IC combo for compact applications
- 5S 20A BMS: Higher current variant with similar pinout
Package Includes:
- 1 x 5S 18.5V 15A Li-Ion Battery Protection Board
Additional information
Weight | 7 g |
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Dimensions | 90 × 17 × 5 mm |
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