13S 48V 20A BMS Lithium Battery Protection Board with Balancing
13S 48V 20A BMS Lithium Battery Protection Board with Balancing
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Short Product Description
Short Product Description
Revitalize your 48V battery packs with this professional-grade 13S BMS. Engineered for safety and longevity, this 20A protection board features active cell balancing and a slim 217mm profile, making it the perfect drop-in replacement for e-bike batteries and custom lithium projects. Safeguard your investment against overcharging and short circuits today.
Key Features
Key Features
- 13-Series Compatibility: Specifically designed for 48V (nominal) Lithium-Ion / Li-Polymer battery packs.
- 20A Continuous Discharge: Handles steady power output suitable for 500W-1000W motors and general electronics.
- Integrated Cell Balancing: Automatically equalizes voltage across all cells to maximize pack health.
- Slim "Long Strip" Design: The 217mm length fits perfectly into downtube e-bike battery cases and narrow enclosures.
- Robust Thermal Management: Features an aluminum heat sink plate and high-quality MOSFETs for efficient heat dissipation.
- Separate/Common Port Capable: Clearly labeled P- (Discharge), C- (Charge), and B- (Battery) pads for straightforward wiring.
Full Product Description
Full Product Description
Build Safer, Longer-Lasting 48V Battery Packs
Whether you are repairing a faulty electric bike battery or building a custom energy storage solution, the heart of your system is the Battery Management System (BMS). This 13S 20A Lithium Battery Protection Board provides critical monitoring for 13-series (48V nominal) Li-ion battery packs.
Why This BMS Stands Out?
Unlike generic boards, this module is designed with a long strip form factor (217mm x 63mm), specifically engineered to fit into narrow battery casings commonly found in e-bikes, scooters, and electric skateboards.
Comprehensive Protection Logic
Don't risk battery failure or fire hazards. This BMS acts as a gatekeeper, constantly monitoring voltage and current. It automatically disconnects the circuit if it detects:
- Overcharge: Prevents voltage from rising to dangerous levels during charging.
- Over-discharge: Stops power drain before cells are permanently damaged.
- Short Circuit: Instantly cuts power to prevent thermal runaway.
Active Cell Balancing
Unbalanced cells kill battery packs. This board features built-in passive balancing circuitry that ensures all 13 cell groups remain at the same voltage level, significantly extending the overall lifespan and usable capacity of your battery pack.
Technical Specifications
Technical Specifications
- Model: HXYP-S19.5mm13S-CW25
- Battery Chemistry: Li-ion / Li-Po (3.7V nominal)
- Series Count: 13S (48V nominal)
- Continuous Discharge Current: 20A
- Charging Voltage: 54.6V (4.2V × 13)
- Overcharge Protection: Detection at 4.25V ± 0.05V
- Over-discharge Protection: Detection at 2.7V ± 0.1V
- Balancing Function: Yes (passive balancing)
- Dimensions: 217mm (L) × 63mm (W) × 1.6mm (H)
- Wiring Interface: Solder pads (B-, P-, C-)
Delivery Options
Delivery Options
- Local delivery within Hong Kong and in-store pickup.
- Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.
- Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).
- Estimated delivery time: 1–3 business days after dispatch (Hong Kong).
- In-store pickup details (location and time) will be confirmed by email or phone message.
- Delivery times are estimates and may be affected by weather or unforeseen circumstances.
FAQ Section
FAQ Section
Q: Will this BMS work with LiFePO4 batteries?
A: No. This board is designed for standard Lithium-Ion (3.6V/3.7V) chemistry. LiFePO4 cells have lower voltages and require a different protection threshold. Please check our store for LiFePO4 specific boards.
Q: How do I know if this fits my e-bike battery case?
A: This board measures 217mm x 63mm. It is a "long strip" style board. Please open your existing battery case and measure the available space before purchasing to ensure it will physically fit.
Q: Does this board support separate charging and discharging ports?
A: Yes. The board features distinct solder pads: C- for the charger negative and P- for the load (motor/controller) negative. This allows for safe separation of charging and discharging currents.
Target Users / Applications
Target Users / Applications
- E-Bike Repair Shops: Perfect for replacing failed BMS boards in 48V e-bike batteries.
- DIY Electronics Hobbyists: Building custom 48V power banks or home energy storage walls.
- Electric Scooter Maintenance: Compatible with many 48V scooter battery configurations.
