7S 20A 24V Li-ion Lithium 18650 Battery BMS Packs PCB Protection Board With Matching Cable Automatic Protection Function

The 7S 20A 24V Li-ion Lithium 18650 Battery BMS Protection Board with matching cable is designed to ensure safe and efficient performance of lithium battery packs. Equipped with automatic protection functions, this PCB board provides stable operation for various electronic applications.

Discharge Information

• Supports discharge products with above 3A current
• Compatible with batteries having a discharge rate higher than 3C

Magnification Example:

• 1C rate battery with 2000mAh capacity → 2AH × 1 = 2A working current
• 3C rate battery with 2000mAh capacity → 2AH × 3 = 6A working current

Protection Functions

• Short circuit protection with delay self-recovery
• Overcurrent protection
• Overcharge protection
• Over-discharge protection

Applications

• Massager battery packs
• LED light backup power supplies
• 12V electronic products
• Solar street light battery packs
• Monitoring and standby power supplies

Specifications

• Configuration: 7S (7 batteries connected in series)
• Rated Voltage:
  • 25.9V for 18650 or 3.7V lithium batteries
  • 25.2V for 3.6V polymer batteries
  • 29.4V after full charge
• Charging Voltage: 29.4V
• Overcharge Voltage Range: 4.25V ± 0.05V
• Over-discharge Voltage Range: 2.5V ± 0.05V
• Working Current Limit: 15A
• Instantaneous Current Limit: 20A
• Quiescent Current: <30uA

Note

Not suitable for lithium iron phosphate batteries, xenon lamps, drill battery packs, electric fish batteries, e-bikes, baby car batteries, motors above 550W, or 1W fish-eye LED lights. Always install according to the wiring diagram and connect wires properly before charging. Avoid intentional short-circuiting.

Package Includes

• 1 × 7S 24V 20A Balancing Li-ion 18650 BMS Protection Board