2S BMS Battery Protection Board 7.4V Li-ion (HX-2S Series)

2S BMS Battery Protection Board – HX-2S Series (7.4V Li-ion / LiPo)

The HX-2S Series BMS is a compact and reliable 2-cell series Battery Management System designed to protect your 7.4V Li-ion or LiPo battery packs from overcharge, over-discharge, and short circuit conditions. Whether you're building a DIY power bank, RC battery pack, or embedded power system, this BMS ensures safe and stable battery operation.

Key Features

• 2S Configuration — supports 2 Li-ion/LiPo cells in series (7.4V nominal)
• Overcharge Protection — cuts off charging when cell voltage exceeds safe limit
• Over-discharge Protection — disconnects load before battery is fully drained
• Short Circuit Protection — instant cutoff on output short
• Dual MOSFET Design — high-efficiency switching with low on-resistance
• Compact PCB — easy to integrate into battery packs and enclosures
• Solder Pad Connections — B+, B-, P+, P-, BM pads for easy wiring

Available Models

• HX-2S-D01 — standard current rating, suitable for general use
• HX-2S-JH10 — higher current rating with dual KGA7T22 MOSFETs, R005 shunt resistor

Specifications

• Cell Configuration: 2S (2 cells in series)
• Nominal Voltage: 7.4V
• Charging Cutoff Voltage: ~8.4V
• Discharge Cutoff Voltage: ~6.0V
• PCB Color: Blue
• Connection: Solder pads (B+, B-, P+, P-, BM)

Applications

• DIY 18650 battery packs
• RC car / drone LiPo packs
• Portable power banks
• Embedded electronics and robotics power systems
• Solar energy storage projects