2S 5A Protection Board

2S 5A Lithium Battery BMS Protection Board

Suitable for 2 pieces of 18650 battery. It does not charge batteries. It is for battery protection. It takes on the balancing task.

Features:

• Protection circuit for 2 series lithium batteries.
• Overcharge protection.
• Over-discharge protection.
• Short circuit protection.
• Overcurrent flow protection.
• Overcharge voltage: 4.25-4.35V ±0.05V
• Over-discharge voltage: 2.3-3.0V ±0.05V
• Maximum continuous charging current: 5A
• Size: Diameter 17.5mm

Board Connections:  Please examine image number 5.

• B+ Battery + connection
• B-  Battery - connection
• BM Connection between Battery 1 and Battery 2
• P+ Common point for the charge and load connection. The positive terminal is connected.
• P-  Common point for the charge and load connection. The negative terminal is connected.

Features:

•  High-accuracy voltage detection circuit;
•  Terminal of the charger using high voltage device;
•  Built-in three-stage over-current detection circuit (over-current 1, over-current 2, load short circuit);
•  MOS transistor can control the battery charge and discharge;
•  Low standby current consumption.

Parameter:

• Short circuit protection: can be protected, charge recovery required
• Overcharge protection
• Over-discharge protection
• Overcurrent protection
• Charging voltage: 8.4V-9V
• Overcharge Detection Voltage: 4.25V-4.35V  ±0.05V
• Over Discharge Detection Voltage: 2.3V-3.0V ±0.05V
• Maximum Working Continuous Current: 5A
• Max peak current: 7A
• Small current:less than 10uA   
• Life cycle :more than 50000hours
• Internal Resistance: Less than 300mohm   
• Working temperature: -40 --- +50C
• Size: 17.5mm x 17.5mm x 3.2mm

Solder joint description:

• B+ is connected to the battery positive pole;
• B- is connected to the negative pole of the battery;
• BM is connected to the connection point between battery 1 and battery 2.
• P+ is connected to the positive terminal of the charge/discharge terminal (the charge terminal/discharge terminal is shared)
• P- Connect the charge/discharge terminal negative (common to the charge/discharge terminal).

Package Contents:

• 1 Piece 2S 5A Lithium Battery BMS Protection Board