• Product label: Sold out

4S 14.8V / 16.8V 20A Li-Ion BMS with Balance 18650 Lithium Battery Protection Board Overcharge, Over-Discharge, Short Circuit Safety

Sale price Rs. 459.00 -55% Regular price Rs. 1,000.00 (MRP Inclusive of All Taxes)
Regular price Rs. 459.00
Fast Delivery
Superfast Same-Day Shipping

30-Day Easy Returns

No questions asked return policy

1-Year Warranty

Comprehensive product warranty for peace of mind

Best Price Guarantee

Found it cheaper? We’ll match the price

  • Essential Battery Protection: Safeguards 4S Li-ion and Li-polymer battery packs against overcharge, over-discharge, overcurrent, and short circuits.
  • Supports High Power Loads: Handles 15A continuous and 20A peak discharge, ideal for solar lights, DIY power banks, tools, and portable power systems.
  • Fast & Safe Charging: Compatible with 17–18V charging voltage and up to 10A charging current for efficient battery maintenance.
  • Balanced Cell Management: Built-in balancing keeps cells equalized with precise cutoffs—4.25V overcharge, 2.5V over-discharge, ensuring longer battery life.
  • Reliable & Durable: Performs smoothly from -20°C to 80°C, making it suitable for indoor and outdoor applications.
  • Warranty: Comes with a 1-year warranty (contact amicikart for support).

Description

This 4S 20A BMS is designed for 14.8V/16.8V Li-ion battery packs, providing stable performance with advanced safety features including overcharge, over-discharge, overcurrent, and short-circuit protection.

With cell balancing, 15A continuous load support, and fast charging capability, it ensures long battery life and safe operation for DIY battery packs, solar systems, tools, and portable power devices.

Technical Specifications:

Continuous discharge current: 15A
Instantaneous discharge current: 20A
Charging voltage: 17–18V
Maximum charging current: 10A
Overcharge detection voltage: 4.25 ± 0.05V
Overcharge testing delay time: 0.5s
Overcharge release voltage: 4.08 ± 0.05V
Over-discharge detection voltage: 2.5 ± 0.05V
Over-discharge delay time: 0.1s
Over-discharge release voltage: 2.9 ± 0.1V
Overcurrent detection voltage: 150mV
Overcurrent discharge delay: 40ms
Overcurrent protection current: 120 ± 10A
Overcurrent protection release: Disconnect the load
Short circuit protection: Triggered by external load short circuit
Short circuit detection time: 250µs
Short circuit protection release: Disconnect the load
Operating temperature range: -20°C to 80°C

Recommendations