Name: 3S 20A 18650 Lithium Battery Protection Board
Brand: Generic
SKU: IFT00066-10
Availability: InStock

3S 20A Li-ion 18650 BMS Lithium Battery Protection Board is a Battery Management System (BMS) designed for 3-cell 18650 Li-ion battery packs. It offers overcharge, over-discharge, short-circuit, and overcurrent protection to ensure the safe operation and longevity of your battery packs.

Key Features of 3S 20A Li-ion 18650 BMS Protection Board:

- 3-Cell Configuration: Supports protection for 3 Li-ion cells in series (3S).
- High Discharge Current: Supports continuous discharge up to 20A.
- Comprehensive Protection: Includes overcharge, over-discharge, overcurrent, and short-circuit protection.
- Automatic Recovery: Recovers automatically from protection mode without needing manual reset.
- Compact Design: Small form factor suitable for DIY battery packs.

Technical Specifications of 3S 20A Li-ion 18650 BMS Board:

- Battery Type: Li-ion 18650
- Cell Configuration: 3S (3 cells in series)
- Charge Voltage: 12.6V (4.2V per cell)
- Discharge Current: 20A (Continuous)
- Overcharge Detection Voltage: 4.25V ± 0.05V
- Over-discharge Detection Voltage: 2.7V ± 0.1V
- Overcurrent Protection: 30A ± 5A
- Short Circuit Protection: Yes
- Board Dimensions: Approx. 56mm x 45mm x 3mm

Mechanical Characteristics of 3S 20A BMS Board:

- Board Material: FR4 High-Quality PCB
- Thickness: Approx. 1.2mm
- Mounting Holes: Not available; use adhesive or casing slots
- Weight: Approx. 8 Grams
- Length: 56mm
- Width: 45mm
- Height: 3mm

Wiring Diagram and Pinout for 3S 20A Li-ion BMS Board:

- B+: Battery Pack Positive Terminal
- B-: Battery Pack Negative Terminal
- B1: Connection Between Cell 1 and Cell 2
- B2: Connection Between Cell 2 and Cell 3
- P+: Output Positive Terminal (to Load/Charger)
- P-: Output Negative Terminal (to Load/Charger)

Applications of 3S 20A Li-ion 18650 BMS Module:

- Battery Pack Protection: Used in DIY Li-ion battery packs for electric bikes, scooters, and tools.
- Portable Power Banks: Provides safe battery control for high-capacity power supplies.
- Solar Energy Storage: Protects batteries used in off-grid solar systems.
- RC Applications: Safe power management in RC vehicles and drones.
- Backup Power Systems: Ensures reliable performance in UPS and emergency power systems.

Equivalent Models:

- 3S 25A BMS Module: Higher current protection for similar 3-cell configurations.
- DW01 Based 3S BMS Board: Compact protection boards for 18650 packs.