2S 20A BMS Protection Board w/ Balance – 8.4V 18650 Li-ion

2S 8.4V 20A Lithium Battery BMS Protection Board with Balance

This 2S 20A BMS (Battery Management System) board provides reliable protection for building or repairing lithium-ion battery packs. Designed for 2-cell (2S) packs with a nominal voltage of 7.4V and fully charged at 8.4V, it includes balanced charging for safer, longer-lasting performance.

Features

• Continuous charge current: up to 10A
• Maximum discharge current: 20A
• Balanced charging function included
• Protection against overcharge, over-discharge, overcurrent, and short circuits
• Compact and lightweight design

Compatibility

• Works with lithium-ion cells such as 18650, 26650, and polymer lithium batteries
• Supports resistive loads up to 168W
• Recommended for applications under 25A starting current (e.g., small power tools, drills, LED packs, DIY projects)

Specifications

• Type: 2S (2-cell) lithium battery BMS
• Nominal voltage: 7.4V
• Full charge voltage: 8.4V
• Charge current: 10A max
• Discharge current: 20A max
• Balance charging: Yes

Package Includes

• 1 × 2S 20A BMS protection board with balance

Important Information

• Cells, wire and solder are not included.
• Observe correct polarity when wiring the balance leads — reversed connections will damage the board.
• Derate the current if the board is enclosed without airflow.

Ships fast from the USA. Shipping calculated at checkout.

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