Lithium Battery Protection Circuit 3s 7A PCM

Basic Info.

Model NO.	LWS-3S7A-347(3S)
Battery Series	3s
Max Charge	7A
Transport Package	Vacuum Packing/Plastic Bag/Standard Carton Packing
Specification	L50*W16*T3.5mm
Trademark	LWS
Origin	Shenzhen, China(Mainland)
HS Code	8536300000
Production Capacity	100000/Month

Product Description

LiFePO4 Battery/Li-ion battery circuit board BMS/PCM/PCB Board
1. True lithum battery pack BMS factory2. Supply OEM/ODM and custom service3. High quality with smart balance function4. Wholesale price5. ISO9001/ISO14001/CE/ROHS certificates6. Fast deliveryProduction Description

Shenzhen Li-ion Battery Bodyguard Technology Co.,LTD
PCM Specifications For 11.1V(3S) Li-ion Battery Packs
Model: LWS-3S7A-347(3S)
Available for LiFePO4 battery by changing IC
No.	Test item		Criterion
1	Voltage	Charging voltage	DC: 12.6V 4.2/Cell
		Balance voltage for single cell
2	Current	Balance current for single cell
		Current consumption	20μA
		Maximal continuous charging current	7A
		Maximal continuous discharging current	7A
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	4.10±0.050V
4	Over discharge protection	Over discharge detection voltage for single cell	2.70±0.080V
		Over discharge detection delay time	10mS-150mS
		Over discharge release voltage for single cell	3.00±0.100V
5	Over current protection	Over current detection voltage	100±15mV
		Over current detection current	15-20A
		Over current detection delay time	5-20mS
		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)	≤50mΩ
8	Temperature	Operating Temperature Range	-20~+70ºC
		Storage Temperature Range	-40~+125ºC

Our Advantages for BMS

1. Complete Function: Detect and protect the battery from: over-charge, over-dicharge, over-current, short-circuit, temperature detecting protection, auotmatically voltage balance function.
2. Build with high end electronic components (High End IC and MOSFET ) ,
3. Simple structure design will let it have more stable quality working performance ,
4. Flexible application ( it can be used for less series battery by leaving some connection pins at empty status ),
5. Full set of protection measures let it works well
6. Without any infulence from external unexpected accidents.

About your products, just tell us the relative voltage/ cells/ current A or equipment etc,

we will help to recomment the most suitable products for you. or we design for you!

Similar products (1~35 series)

Certifications

Company Information
We are a specialize of digital (single class), multi-cell power BMS lithium battery protection board the R & D, production, sales and service of high-tech enterprises.
Shenzhen Li-ion Battery Bodyguard Technology Co.,LTD was founded in 2013, with 100K per month PCM/BMS production ability.
Products including multi-series lithium battery pack protection board, power lithium battery BM, balanced protection board, LTO BMS and LiFePO4 battery BMS, etc.Varies applications including Movable power batteries, power tools battery, batteries for electric bikes, golf cart batteries, car starting power batteries, street lights and other production areas.Products are well recognized and well regarded by customers in Europe, USA, Middle east, Africa, South East Asia countries and as well as Chinese domestic market.
Workshop
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: The protection circuit board you need to buy must be same cells in series as your battery pack.
Please also tell us your battery material: LiFePO4 or Li-ion battery?

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 battery cells 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 function.

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,Western Union

Q: How to contact for BMS?

A: Please send messages below or e-mail us and we are always glad to help you with BMS.