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12V 4S 20A LiFePO4 BMS with Balance Overcharge, Over-Discharge, Short-Circuit & Overcurrent Protection

Sale price Rs. 309.00 -70% Regular price Rs. 1,000.00 (MRP Inclusive of All Taxes)
Regular price Rs. 309.00
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  • Reliable 4S LiFePO4 Protection: Designed for 12.8V (4-cell) LiFePO4 battery packs with accurate voltage matching.
  • 20A High-Performance Output: Supports up to 18–20A charge/discharge, ideal for e-bikes, solar systems, DIY battery packs, and power tools.
  • Cell Balancing Included: Built-in 50mA balancing keeps all 4 cells equal for longer battery life and stable performance.
  • Fast & Smart Safety Features: Protects against overcharge, over-discharge, overcurrent, and short circuit, with millisecond-level response.
  • Thermal Protection: Automatically shuts down at 65°C and resumes at 45°C to prevent overheating.
  • Auto Recovery: Restarts automatically after fault conditions—no manual reset required.
  • Warranty: Comes with a 1-year warranty (contact amicikart for support).

Description

This 12V 4S 20A LiFePO4 BMS protects your 12.8V LiFePO4 battery pack with fast, intelligent safety features, including overcharge, over-discharge, overcurrent, short-circuit, and thermal protection.

It supports up to 20A, includes active cell balancing, and ensures long battery life and safe performance for e-bikes, solar systems, and DIY energy projects.

Technical Specifications:

Maximum continuous charging current: 18A
Maximum continuous discharge current: 18A
Charging voltage: 14.6V (CC/CV)
Balance voltage per cell: 3.6V
Balance current per cell: 50mA
Overcharge detection voltage: 3.75 ± 0.05V
Overcharge testing delay: 1.2s
Overcharge release voltage: 3.6 ± 0.05V
Over-discharge detection voltage: 2.1 ± 0.05V
Over-discharge delay: 144ms
Over-discharge release voltage: 2.3 ± 0.05V
Overcurrent protection current: 56A ± 10A
Overcurrent detection voltage: 0.15V
Overcurrent delay: 9ms
Release condition: Cut load, automatic recovery
Short circuit condition: External short circuit
Short circuit detection time: ≤ 320µs
Short circuit release: Cut load, automatic recovery
Over-temperature cut-off: 65°C
Over-temperature release: 45°C

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