Lifepo4 BMS 4S 15A

What we offer

  • 1pcs above for standard item
  • Customized sizes, specs, designs, components, 5000-10000pcs

For samples, we can ship within 2-3 days;

For small batch, 5-7 days;

For mass batch, 10-15 days.

For standard product, we offer 1 year quality guarantee;

For customized product, we offer 2 year quality guarantee;

Our team will handle every issue you may have after you receive the items. 

Product PCM Datas

3.2 PCM Datas

(The test needs to be carried out in a room with a temperature of 25±2℃ and a relative humidity of 65+/-20% )




Testing Item



Max. Rated Min.
Working Voltage Voltage Range 8.4 15 V
Working Current Charge current (continuous) 15 A
Disharge current (continuous) 15 A


Chargring Protection

Charging Adapter Voltage(CC-CV) 15 V
Overcharge protection voltage 3.700 3.750 3.800 V
Overcharge protection delay time 500 1500 mS
Overcharge protection recovery voltage 3.550 3.600 3.650 V


Discharge protection

Over discharge protection voltage 2.000 2.100 2.200 V
Over-discharge protection delay time 100 400 mS
Over-discharge protection recovery voltage 2.200 2.300 2.400 V
Over-discharge protection recovery conditions Charge recovery



Overcurrent Protection

Charge overcurrent protection value / A
Charge overcurrent delay / mS
Charge release adjustment /
Discharge overcurrent 1 Protection current value 70 120 A
Discharge overcurrent 1 protection delay 50 200 mS
Discharge overcurrent protection recovery condition disconnect the load

Short circuit protection

Short circuit protection delay time 80 100 200 uS
Short circuit protection recovery disconnect the load
Cell balancing Balancing starting voltage 3.550 3.600 3.650 V
Balancing Current 20 35 mA
temperature protection temperature protection value /
Temperature protection release value /
Internal resistance Discharge circuit internal resistance / 10 20 mR
self-consumption Operating mode / 20 50 uA
Operating temperature normal working range -20 70
storage temperature Humidity below 90% -40 85
size Length*Width*Heigth 66*34*8 mm

Why Choose Us

We’re the leading professional manufacturer specialized in designing and producing battery protection boards to guarantee the safety of any kind batteries. We produce battery protection boards only to serve this unique demand. From concept to real boards, we offer one-stop solutions to worldwide customers.

Automatic SMT Assembly

We have more than 200 advanced SMT assembly machines to complete your order with high quality.

Strict Functional Testing

Each item will be inspected with strict functional test before packed.

Quality Control

You can check our quality control process here.

24 Years of Experience

We have more than 200 advanced SMT assembly machines to complete your order with high quality.

Strong Custom Capability

Each item will be inspected with strict functional test before packed.

Quick Delivery Time

You can check our quality control process here.

TOP 1 Wholesale Manufacturer

Wide Custom Options for Your Unique BMS Boards

board design

To ensure you have assembly options that will suit your needs, we can custom any required size for battery protection boards.

  • mini size for mobile battery
  • middle size for power tools battery
  • bigger size for power generator battery
data test

We can custom any specs you required to protect the battery and make them run in good conditions.

  • Over-charge protection 
  • Over-discharge protection
  • Voltage & current protection
R&D test

Make all your needed function and perform functional test to ensure all boards works perfectly for your devices.

  • power on delay time
  • power off delay time
  • bigger size for power generator battery
board layout

Custom single layer, double-sided layer, double layer, four layers, eight layers, up to twenty-four layers for you.

  • four layers board
  • eight layers board
  • twelve layers board
mobile battery charger board

Source the original branded components which works perfect in your required protection boards.

  • Protection ICs
  • Capacitors
  • Resistance components
KURUI Package

Custom your package with your brand logo and pack every item very carefully to avoid damages during delivery 

  • Custom your logo
  • Custom your package sizes
  • Custom your package materials

TOP 1 BMS Boards Manufacturer

Quote & Design