factory BMS/PCB/PCM 7S 20A for Li-ion/LiFePO4 Battery Packs

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US $1-15 / Pieces | 10 Piece/Pieces factory BMS/PCB/PCM 7S 20A for Li-ion/LiFePO4 Battery Packs (Min. Order)
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Overview
Quick Details
Place of Origin:
Guangdong, China (Mainland)
Brand Name:
LWS
Model Number:
LWS-10S20-034(7S)
Number of Layers:
Other
Base Material:
FR-4
Copper Thickness:
1oz
Board Thickness:
1.6mm
Min. Hole Size:
0.25mm
Min. Line Width:
0.1mm(Flash Gold)/0.15mm(HASL)
Min. Line Spacing:
0.003"
Surface Finishing:
HASL
Item name:
BMS 7S 20A
Voltage:
25.9 V
Charging voltage:
DC:29.4V CC/CV
cells in series:
7 S
Pcb Size:
L145*W59*T8.5mm
Application:
e-bike,unicycle,powder tools,movable powder,toy's battery pack
Certificate:
Can doCE,ROHS,ISO9001,ISO14001
Supply Ability
Supply Ability:
100000 Piece/Pieces per Month factory BMS/PCB/PCM 7S 20A for Li-ion/LiFePO4 Battery Packs
Packaging & Delivery
Packaging Details
Inner packing:Vaccum packing/Plastic bag.
Outer packing:Standard carton packing or packing per customer's requirements.
Port
Shenzhen
Lead Time :
Shipped in 3-7 days after payment
Product Description
factory BMS/PCB/PCM 7S 20A for Li-ion/LiFePO4 Battery Packs
Shenzhen Li-ion Battery Bodyguard Technology Co.,LTD
PCM Specifications For 25.9V(7S) Li-ion Battery Packs
Model: LWS-10S20-034(7S)
 No.
Test item
Criterion

1

Voltage
Charging voltage
DC:29.4V CC/CV
Balance voltage for single cell
4.20±0.025V


2


Current
Balance current for single cell
60±5mA
Current consumption
≤20μ A
Maximal continuous charging current
20A
Maximal continuous Discharging current
20A

3


Over charge Protection
Over charge detection voltage for single cell
4.25±0.025V
Over charge detection delay time
0.5S—1.5S
Over charge release voltage for single cell
4.05±0.05V

4


Over discharge protection
Over discharge detection voltage for single cell
2.50±0.062V
Over discharge detection delay time
10mS—150mS
Over discharge release voltage for single cell
2.50±0.062V


5


Over current protection
Over current detection voltage
0.62V
Over current detection current
80±10A
Detection delay time 
5ms—15ms
Release condition
Cut load

6

Short protection
Detection condition
Exterior short circuit
Detection delay time
200-500us
Release condition
Cut load
7
Resistance
Protection circuitry(MOSFET)
≤20mΩ

8

Temperature
Operating Temperature Range
-40~+85℃
Storage Temperature Range
-40~+125℃

Other products

We professionally manufacture lithium polymer battery and pcb for more than 5 years in China.

We have cooperated with HP,Emerson tool,NIke,WD.

Our company is established in 2013.

Product Certificates CE ROHS.

Quality control system certificates:ISO9001,ISO14001

Our Company

1.Complete products contract PCB assembly and manufacturing services


2.Circuir boards 2 to 30 layers PCB layout,fabrication, PCB assembly and box build


3.Active and passive components source is directly from original manufacturer


4.Enclosure cabinet case plastic injection molding,mental stamping,manufacture and assembly


5.High-precision 0201 size components SMT technology and lead-free


6.IC pre-program


7.Hight-precision E-Tasting

Packing & Delivery

Inner packing:Vaccum packing/Plastic bag.

Outer packing:Standard carton packing or packing per customer's requirements.


Shipped within 3-7 working days after payment

Our Service

1.after sales services


2.OEM,ODM,Customized Design


3.We can provide 24 hours service for you. We pride ourselves on our ability to custom tailor programs around our


 customers'needs. We take time to listen to your unique business needs and then set out to surpass them

FAQ
Q: How do I judge what material my battery is ?

A: Please take a look at the battery body.if the normal voltage of your battery shows as 3.2V,the battery will be LiFePo4.If the normal voltage of your battery shows as 3.6V or 3.7V, the battery will be Li-ion or Li-polymer battery. you can also ask battery manufacturer the material of battery.


Q: Can I use this protection circuit board for my battery?

A: Can use this protection circuit board, or not? There are 2 questions:How much cells in series is your battery pack? The protection circuit board you need to buy must be same cells in series as your battery pack.What material is your battery? Only the LiFePo4 battery has different electric parameter from other battery, so if you need buy the protection circuit board for LiFePo4 battery , Please let us know firstly.


Q: Do we need cell balance or not?
A: The function of balance : Since battery is made of many pcs of cells in parallel and in series, the cells can't be the same as no two people in the world is the same , so can only put in group with similar performance is not consistent , which will lead to each cell voltage is not consistent as well after the completion of the charging if without balance fun


Q: Do you have Minimum Order Requirement (MOQ)?
A: No, We don’t have MOQ, Different customer have different requirement ,We can provide various capacity and size is per your requirements,Also ODM / OEM is welcome.

Q: What is your term of payment?
A: PayPal, T/T, L/C,