Jiabaida (JBD) LiFePo4 4S 12.8V 20A BMS is a compact and reliable Battery Management System based on the CP04S005 chipset, designed for 4-cell LiFePo4 battery packs. It ensures safe operation with integrated protections against overcharging, over-discharging, and short circuits. With passive balancing and a lightweight aluminum casing, this BMS is ideal for portable applications such as DIY battery packs, e-bikes, and solar storage systems.

Jiabaida (JBD) LiFePo4 4S 12.8V 20A BMS Features:

• Passive cell balancing for stable performance
• Integrated overcharge, over-discharge, and short-circuit protection
• CP04S005 chipset for accurate control
• Aluminum plate helps with basic heat dissipation
• Suitable for compact battery-powered systems

JBD LiFePo4 4S 12.8V 20A Waterproof BMS Specification:

Specification	Value
Model	L4S-20A-20A-B-V1.1
Chipset	CP04S005
Supported Cells	4S (LiFePo4)
Nominal Voltage (V)	12.8
Charge Voltage (V)	14.6
Charge Current (A)	10
Continuous Discharge (A)	20
Balance Current (mA)	30 ±5
Overcharge Detect (V)	3.75 ±0.05
Overcharge Release (V)	3.55 ±0.05
Over Discharge Detect (V)	2.2 ±0.1
Over Discharge Release (V)	2.5 ±0.1
Operating Temperature (°C)	-20 to 70
Dimensions (mm)	66 x 34 x 10

 

Package Includes:

1 x JBD LiFePo4 4S 12.8V 20A Waterproof Battery Management System - BMS Protection Board