| Customization: | Available |
|---|---|
| Overcharge Protection: | 4V+-0.025V |
| Ovediscahrge Protection: | 2.0+-0.08V |
|
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1. Product description:
| PCM Specifications For (4S) 14.8V Li-ion Battery Packs | |||
| LWS-4S30A-058(4S) | |||
| No. | Test item | Criterion | |
| 1 | Voltage | Charging voltage | DC:16.8V CC/CV |
| Balance voltage for single cell | 4.2±0.025V | ||
| 2 | Current | Balance current for single cell | 42±5mA |
| Current consumption | ≤50μA | ||
| 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 | 8S-13S | ||
| Over charge release voltage for single cell | 4.05±0.05V | ||
| 4 | Over discharge protection | Over discharge detection voltage for single cell | 2.5±0.08V |
| Over discharge detection delay time | 50mS-150mS | ||
| Over discharge release voltage for single cell | 3.0±0.1V | ||
| 5 | Over current protection | Over current detection voltage | 0.1±0.025V |
| Over current detection current | 80±20A | ||
| Detection delay time | 5ms-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) | ≤20mΩ |
| 8 | Temperature | Operating Temperature Range | -20~+70ºC |
| Storage Temperature Range | -40~+125ºC | ||
2.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
Function: Detect and protect the battery from over-charge ,over-dicharge, over-current short-circuit temperature detecting protection and auotmatically voltage balance function . Build 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 recommend the most suitable products for you.
3.Packing and shipping
Shenzhen Li-ion Battery Bodyguard Technology Co.,Ltd. is a collection of digital (single class), multi-cell power BMS lithium battery protection board the R & D, production, sales and service of high-tech enterprises. The factory was set up in the LongHua Shiao Second Industrial Zone, a beautiful environment, convenient transportation, welcome new and old customers come to visit.
The company has developed a multi-string lithium battery pack protection board, power lithium battery packs balanced protection board and LiFePO4 battery pack the balanced protection board nearly models, product specifications covering the battery assembly in series 1-35 string, working current up to 350A protection of the battery management system, the company's complete product specifications can also be customized according tocustomer requirements.
The company's products are widely used in mobile phone batteries, laptop battery, Tablet PC battery, power tools battery, batteries for electric bikes, electric bus battery, golf cart batteries, and other digital products, spare power supply, etc., product market involves digital products, power in areas such as automotive, energy storage devices,medical equipment and mobile lighting.
*Complete products contract PCB assembly and manufacturing services
*Circuit boards 2 to 30 layers PCB layout,fabrication, PCB assembly and box build
*Active and passive components source is directly from original manufacturer
*Enclosure cabinet case plastic injection molding,mental stamping,manufacture and assembly
*High-precision 0201 size components SMT technology and lead-free
*IC pre-program
*Hight-precision E-Testing
7.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 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 as per your requirements,Also ODM / OEM is welcome.
Q: What is your term of payment?
A: PayPal, T/T, L/C,Western Union
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