Battery Protection Boards for Xiaomi BN44

bn44 battery bms board
bn44 battery bms board
bn44 battery bms board
bn44 battery bms board
bn44 battery board circuit

What we offer

  • Design Your Board
  • Custom Your Requirements
  • Strict Quality Control
  • Strong Package
  • 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. 

Quick Quote

Product PCM Datas

NO Items Unit. test specification
1 Over charge protection voltage V 4.425±0.025
2 Over charge release voltage V 4.250±0.050
3 Over discharge protection voltage V 2.775±0.075

 
4 Over discharge release voltage V 3.000±0.100
5 Over current for charge protection

/(VDD=3.6V）

 A 4.5-7.5
6 Over current for discharge protection

/(VDD=3.6V)

 A 6.0-8.0
7 Delay time for over charge protection mS 80-200
8 Delay time for over discharge protection mS 20-60

 
9 Delay time for over charge current protection mS 5-20
10 Delay time for over discharge current protection mS 5-20
11 Delay time for short circuit protection uS 80-400
12 Power consumption of protection circuit Power down uA 3（max）
13 Operation uA 6（max）
14 over-discharge mode uA 3（max）
16 Internal Resistance mΩ 65（MAX）
19 Verify temperature measurement ℃ ±3℃

Board Drawing

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
Board Sizes

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
Board Specifications

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
Board Functions

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 Layers

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
Custom Components

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

  • Protection ICs
  • Capacitors
  • Resistance components
KURUI Package
Custom 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