2S 5A Round Li-ion Lithium Battery 7.4v 8.4V 18650 Charger Protection Board BMS PCM For li-ion lipo Battery Cell Pack

Product Attributes:

Overcharge voltage range: 4.25-4.35v±0.05v

Size: 17.5*17.5*3.2mm

Over discharge voltage range: 2.5-3.0v±0.05v

Upper working current: 5A

Operating temperature: -40– +50℃

Upper instantaneous current: 7A

Storage conditions: -40– +80℃

Static current: less than 10uA

Effective life: more than 50,000 hours

Internal resistance: less than 300mΩ

Short circuit protection: can be protected, need to be charged to restore

Charging voltage: 8.4V-9V

Welding point description:

· B+ is connected to the positive electrode of the battery;

· B- Connect to the negative electrode of the battery;

· MB connects to the connection point before battery 1 and battery 2;

· P+ charge/discharge terminal (charge/discharge terminal sharing);

· P- charge/discharge terminal negative (charge/discharge terminal shared).

Attention:

1. The Difference Between Split Port And The Same Port: Split port means that the positive and negative poles of charging and discharging should be separated;  The charging current and discharging current of the same port are the same, and the charging and discharging arein the same interface.

2. Enhanced Version And Balanced Version: Balanced refers to the use of resistors to discharge high voltage cells during charging ,waiting for low voltage cells to charge up the voltage to achieve consistent voltage across all voltages and improve the performance of the entire battery.

3. Before installing protection, the batteries must be properly matched (the voltage difference between each battery should not exceed 0.05v. The difference in internal resistance is notgreater than 5m , and the difference in capacity is 30mAh lower. The better the battery

consistency, the longer the distance traveled, and the more stable the protection performance achieved.

4. Batteries should be connected in parallel before being connected in series, and ensure correct welding (18650 batteries should be spot welded with nickel plates, and other batteries  should be soldered with solder). Do not screw them down, as it may burn out the lC of the protective plate. TZT.

5. Confirm Whether The Battery Model ls A Lithium Battery Or An  lron Lithium Battery: the protection parameters for the two are different.  Lithium batteries include: (ternary lithium, lithium cobalt oxide, manganese oxide), all of which have a reference voltage of 3.7V,

collectively referred to as lithium batteries.  Therefore ,when selecting a protective plate, it is necessary to choose a lithium battery protective plate. The reference voltage of lithium ironphosphate battery is 3.2V,so the lithium iron phosphate protection board must be used when selecting the protection board.

6.This protection board can not be used for lithium iron phosphate battery, hernia lamp, hand drill battery, electric fish electric pool, electric bicycle battery, children’s car battery, 775(4A) or more motor, 1W fisheye LED lamp, for the above combination purchase customers please pay attention!