BMS Protection Board 2S 7.4V 3A for Li-ion Battery Packs

The 2S 7.4V 3A BMS protection board is designed for two-cell lithium battery packs connected in series. It provides charge and discharge control, overcurrent and short-circuit protection, overcharge and over-discharge protection.

Ideal for portable devices, DIY battery packs, RC models, LED systems and IoT electronics.

Features:

• High-accuracy voltage monitoring

• Three-level overcurrent protection

• Charge & discharge control

• Low standby power consumption

• Extends battery life and safety

Specifications:

• Nominal voltage: 7.4V (2S)

• Working current: 3A

• Peak current: 5A (short-term)

• Charging voltage: 8.4–8.5V (CC/CV)

• Max cell voltage: 4.2–4.25V

• Overcharge protection delay: 0.96–1.4 s

• Over-discharge delay: 110 ms

• Overcurrent delay: 7 ms

• Short-circuit delay: 250 μs

• Internal resistance: < 45 mΩ

• Quiescent current: 5–9 μA

• Operating temperature: −40…+85 °C

• Size: 39 × 7 × 2 mm

Applications:

• Power banks & battery packs

• Robotics and RC electronics

• Portable devices & sensors

• DIY & LED systems