5S 18.5V 15A Li-Ion Lithium Battery Protection Board

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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
Dimensions 90 × 17 × 5 mm
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5S 18.5V 15A Li-Ion Lithium Battery Protection Board

5S 18.5V 15A Li-Ion Lithium Battery Protection Board

120.00
You save

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