| Customization: | Available |
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| Overcharge Protection: | Yes |
| Ovediscahrge Protection: | Yes |
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| Mode | LWS-4S20A-732-R01 |
| PCM Size | L55*W22*T4mm |
| battery series | 4S Available |
| working current | 20Available |
| Usage(Cell Type) | Li-ion battery packs (14.8V/cell) LiFePO4 battery packs (12.8V/cell) |
| Application | Ebike, Solar products, etc |
| Sample | available |
LWS-4S20A-732-R01 for LiFePO4 battery pack of 4 cells in series is a battery protection solution of LWS's, can support a load with very stable, in addition that the continuous current may be up to 20A .
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.
| Shenzhen Li-ion Battery Bodyguard Technology Co.,LTD | |||||
| LWS-4S20A-732-R01 (4S) | |||||
| No. | Test item | Criterion | |||
| 1 | Voltage | Charging voltage | DC:14.4V CC/CV | ||
| Balance voltage for single cell | 3.725±0.025V | ||||
| 2 | Current | Balance current for single cell( Pulse equalization) | 15-38mA | ||
| Current consumption | ≤30μA | ||||
| Max continuous charging current | ≤20A | ||||
| Max continuous Discharging current | ≤20A | ||||
| 3 | Over charge Protection( single cell) | Over charge detection voltage for single cell | 3.85±0.025V | ||
| Over charge detection delay time | 500mS-1500mS | ||||
| Over charge release voltage for single cell | 3.75±0.05V | ||||
| 4 | Over discharge protection( single cell) | Over discharge detection voltage for single cell | 2.3±0.08V | ||
| Over discharge detection delay time | 500ms-1500ms | ||||
| Over discharge release voltage for single cell | 2.5±0.1V | ||||
| 5 | Over current protection | 1-level discharge overcurrent detection current | 60±10A | ||
| 2-level discharge overcurrent detection current | 120±20A | ||||
| Charge overcurrent detection current | 30±8A | ||||
| Charge overcurrent detection delay time | 100ms-500ms | ||||
| 1-level discharge overcurrent detection delay time | 10ms-50ms | ||||
| 2-level discharge overcurrent detection delay time | 1ms-5ms | ||||
| Release condition | Cut load or charge activation | ||||
| 6 | Short-circuit protection (Used and passed the short circuit test of 20AH LFP battery pack) |
Detection condition | External short circuit | ||
| Detection delay time | 200-500us | ||||
| Release condition | Cut load or charge activation | ||||
| 7 | Resistance | Protection circuitry (MOSFET) | ≤20mΩ | ||
| 8 | Temperature protection | Charging high temperature protection | 60±5ºC | ||
| Charging high temperature protection release | 50±5ºC | ||||
| Discharging high temperature protection | 82±5ºC | ||||
| Discharging high temperature protection release | 72±5ºC | ||||
| 9 | Temperature | Operating Temperature Range | -20~+60ºC | ||
| Storage Temperature Range | -20~+85ºC | ||||
| Electric Switch, Temperature Switch, Passive Balance, Active Balance, 5V output, NTC,bluetooth UART/BT/RS485/CAN communication/LCD dispay and etc., if you need any above accessories, please must to contact our sales fisrt. All items could be customized to your requirements,if without any requests after order placed, we will produce as specification in details page. |
| 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! |
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: who are we?
A: We are based in Guangdong, China, start from 2013.
There are total about 40 employees in our company.
Q:How can we guarantee quality?
A: Always a pre-production sample before mass production;
Always final Inspection before shipment;
Q:.what can you buy from us?
A:Battery Pack BMS,Lifepo4/Lithium Ion PCM,Protection Circuit Board,Print Circuit Board,
Lifepo4/Lithium Ion Battery Pack.
Q:. why should you buy from us not from other suppliers?
A:The company has advanced production equipment and comfortable office environment,
employees hundreds of people. The company Has a complete, scientific quality management system,
and the importance of quality and environmental philosophy.
Q: what services can we provide?
A:Accepted Delivery Terms: FOB,EXW;
Accepted Payment Currency:USD,CNY;
Accepted Payment Type: T/T,PayPal,Western Union,Cash;
Language Spoken:English,Chinese
About your products, just tell us the relative voltage/ cells/ current A or equipment etc,we will help to recommend the most suitable products for you.
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