5S 15A Li-ion Battery BMS

This 5S 15A BMS provides reliable protection and management for 5-cell lithium-ion battery packs. Designed for both charging and discharging applications, it ensures safe operation with overcharge, overdischarge, overcurrent, and short-circuit protection, while maintaining efficiency and long-term stability.

Key Features

• Charging Voltage: 21V
• Charge & Discharge MOS Pressure Limit: 35V
• Charging Current: 56A
• Continuous Discharge Current: 15A
• Over Current Protection Delay: 20 / 25 / 30 ms
• Single Cell Power Consumption: 30 µA (standby), 3 µA (between cells)
• Overcharge Detection Voltage: 4.18–4.22V per cell
• Overcharge Recovery Voltage: 4.05–4.15V
• Overcharge Detection Delay: 0.5 / 1.0 / 2.0 s
• Over-discharge Detection Voltage: 2.75–2.85V per cell
• Over-discharge Recovery Voltage: 2.90–3.20V per cell
• Over-discharge Detection Delay: 0.5–2.0 s
• Short Circuit Protection Delay: 200 / 500 / 600 µs
• Auto Recovery: After removal of load for short circuit, overcurrent, or over-discharge
• B- to P- Resistance: 5 mΩ in normal working state
• Max Temperature Rise at Continuous 15A: 25°C
• Operating Humidity: ≥98% for long-term stability
• Operating Temperature Range: -30°C to 80°C

Physical Specifications

• Size: Approx. 60 x 23 mm
• Color: As shown in product images

Package Includes

• 1 x Protection Board (BMS)
• 1 x Wire

Notes

• Allow 1–5 mm tolerance due to manual measurement
• Colors in photos may vary slightly due to monitor settings

This product can be found here:

• Batteries, Chargers & Holders
• Battery Chargers & BMS
• Power