Protection and charging module for 3/4/5S lithium batteries This project is fully open-source and may be used commercially. ZOUDIO is only liable for products of its own production.

Based on: Texas Instruments BQ77915 primary battery protector Texas Instruments BQ24650 battery charger

Configuration is set by using the onboard header.

Specifications (for more details and instructions, refer to the PDF datasheet)

• Overvoltage: 4.2V ±10mV, delay 1S
• Undervoltage: 2.9V ±18mV, delay 1S
• Cell balancing 4mA per cell
• Maximum continuous discharge: 10A
• Overcurrent protection: 15A, delay 180mS
• Short-circuit protection: 30A, delay 1mS
• Recovery after fault event: Attach charger
• Open cell/wire detection: 4.5S delay
• Power consumption: 8μA typical
• Charging current: 1A
• Charging voltage: 4.05V per cell
• MPPT voltage: 17.5V
• Operating temperature: -40 to 85 °C
• Dimensions (WxHxD): 71x38x15mm