Audited Supplier
LWS 12.8V Battery Management System BMS For LiFePO4 4s 8s 10s 400A Car Start Battery Packs
Product Advantages
1.True lithum battery pack BMS factory
2.Supply OEM/ODM and custom service
3.High quality with smart balance function
4.Wholesale price
5.Environment
5.ISO9001/ISO14001/CE/ROHS certificates
6.Fast delivery
About the battery BMS
LWS 4s Lifepo4 BMS 12.8V Lifepo4 BMS Li-ion 4S 400A LFP Battery Pack LTO Circuit Board pcb 18650 Lithium BMS
Function: Detect and protect the battery from over-charge ,over-dicharge, over-current short-circuit ,temperature detecting protection and auotmatically voltage balance function .with high end electronic components (High End IC and MOSFET ) ,simple structure design will let it have more stable quality working performance , Flexible application ( it can be used for less series battery by leaving some connection pins at empty status ),full set of protection measures let it works well 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!
Product specification
| Shenzhen Li-ion Battery Bodyguard Technology Co.,LTD | ||||
| PCM Specifications For 12.8V (4S) LiFePO4 Battery Packs | ||||
| Model: LWS-10S400A-446 (4S) for start-up battery pack | ||||
| No | Test item | Criterion | ||
| 1 | Voltage | Charging voltage | DC:14.8V CC/CV | |
| Balance voltage for single cell | 3.52±0.025V | |||
| 2 | Current | Balance current for single cell | 35±5mA | |
| Current consumption -sigle cell | ≤35μA | |||
| Max continuous charging/discharge current | 80A | |||
| Pulse current | 800A-1600A(5S) | |||
| 3 | Over charge Protection | Over charge detection voltage for single cell | 3.9±0.025V | |
| Over charge detection delay time | 0.7S-1.3S | |||
| Over charge release voltage for single cell | 3.80±0.1V | |||
| 4 | Over discharge protection | Over discharge detection voltage for single cell | 2.50±0.08V | |
| Over discharge detection delay time | 500S-1500mS | |||
| Over discharge release voltage for single cell | 3.00±0.1V | |||
| 5 | Over current protection | Over current detection voltage | / | |
| Over current detection current | / | |||
| Detection delay time | / | |||
| Release condition | / | |||
| 6 | Short protection | Short circuit current | / | |
| protection delay time | / | |||
| Release condition | / | |||
| 7 | Resistance | Protection circuitry(MOSFET) | ≤20mΩ | |
| 8 | Temperature protection | Charging and discharge Temperature protection | 90±5ºC | |
| Charging and discharge Temperature Release | 65±12.5ºC | |||
| 9 | Temperature | Operating Temperature Range | -20~+60ºC | |
| Storage Temperature Range | -20~+85ºC | |||
| Temperature switch | 75ºC | |||
Products Description
About us
Shenzhen Li-ion Battery Bodyguard Technology Co.,Ltd was founded in 2013. We provide Battery PCM &BMS for Lithium ion,LiFePo4,LTO battery pack and ODM & OEM services.Since established, we have designed more than 900 types of hardware PCM/BMS, and software BMS including HDQ/12C/SMBUS/ RS485/RS232 & Bluetooth and so on. Mainly covers battery assembly 1S-35S in series, working current up to 350A; the products arewidely used in light ,power tool, electric bicycle,medical equipment, EV application ....etc. Li-ion Battery Bodyguard Technology Co., Ltd has passed ISO 9001(2015) certification.We were also awarded High Technology Expertise (HNTE) in 2018.
The spirit of "honesty, credibility first" business principle, fast delivery time, competitive price ,high-quality products & services have got us many customer's affirmation.And because of that, our products have been sold to not only Germany, France, the United States, Australia, India, South Korea, Japan but also other countries and regions.
As a professional BMS designer and manufacturer, we are willing to support, help every client to open new markets and extend new business. Meet us, Meet reliablility, Meet our mutual development!
Packaging & Shipping & Payment
Q: How many Ampere protection circuit boards should choose?
A: It depends on your load power such as electric motor power please contact the sales or technical support before buying.
Q: What is the distinction between same port wiring and different port wiring?
A: The cathode of charger and load is different for different port wiring , the cathode of charger and load is same for same port wiring and the charging current is equal to the discharge current.
Q: What is the distinction between balance and unbalance function?
A: Equilibrium function is that high voltage cells will be discharged with resistor, waiting for the low voltage cells , to achieve the each cell voltage is consistent , to improve the battery performance for the whole group.
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,
5. Contact us
Any further questions, Welcome to contact our sales person by sending inquiry .
Your satisfaction is our pleasure. Let's Join hands for mutual Benefits!
