TDT 20A 2S 8021 BMS

A compact and robust 2‑cell (2S) lithium battery protection and balancing board designed to safeguard and manage packs up to 20 A continuous discharge. Packed with essential protection features, smooth input/output switching, automatic balancing, and ultra-low standby current, it’s ideal for high-current 2S battery systems like e-bikes, power tools, and energy storage modules.

Key Features

• Balanced charging and voltage management across both cells

• Protects against overcharge, over-discharge, over-current, short-circuit and reverse polarity

• Switches seamlessly between charging and discharge ports

• Low quiescent current—preserves battery during idle

• PCB made of 1.6 mm FR‑4 with 1 oz copper and HASL lead-free finish