Battery Protection Boards for Xiaomi BN34

bn34 battery bms board

bn34 battery bms board

What we offer

MOQ

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

Delivery Time

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

For small batch, 5-7 days;

For mass batch, 10-15 days.

Quality Assurance

For standard product, we offer 1 year quality guarantee;

For customized product, we offer 2 year quality guarantee;

After-sale Service

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

Product PCM Datas
Board Drawing

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 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

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

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

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

Custom Components

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

Protection ICs
Capacitors
Resistance components

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