| Overcharge Protection: | Yes |
|---|---|
| Ovediscahrge Protection: | Yes |
| Over Current Protection: | Yes |
| Balance Function: | Yes |
| Usage: | Lithium Battery Packs, LiFePO4 etc |
| Application: | Digital Equipment, Electrice, Ebike, etc |
| Samples: |
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| Customization: |
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Audited Supplier Product description:
BMS 4S 15A 20A li ion Lipo Lifepo4 battery pcm for battey pack
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 .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
| PCM Specifications For 14.8V(4S) Li-ion Battery Packs | |||
| Modle: LWS-4S20A-365(4S) | |||
| No | Test item under 25 C environment | Criterion | |
| 1 | Communication protocol | SMBUSE | smbc=SDA/smbd |
| 2 | Charging voltage | DC:16.8V CC/CV(4.2V/1Cell) | |
| 3 | capacity | Design capacity of battery pack | 10200mAh |
| Maximum battery pack capacity | 10200mAh | ||
| 4 | current | Consumption current (software) | <400uA |
| Consumption current (sleep mode) | <150uA | ||
| Maximal continuous charging current | 8A | ||
| Maximal continuous Discharging current | 5A | ||
| 5 | Overcurrent protection (one-pole protection) |
Over charge detection current | 9A |
| Detection delay time | 2S | ||
| Over discharge detection current | 6A | ||
| Detection delay time | 2S | ||
| 6 | Overcurrent protection (bipolar protection) |
Over charge detection current | 10A |
| Detection delay time | 1S | ||
| Over discharge detection current | 7A | ||
| Detection delay time | 1S | ||
| 7 | Overcurrent Protection (Tripole Protection) |
Over discharge detection current | 10A±0.5A |
| Detection delay time | 5-15mS | ||
| recovery current | 200mA | ||
| 8 | Over charge Protection | Over charge detection voltage for single cell | 4.25±0.025V |
| Over charge detection delay time | 1S | ||
| Over charge release voltage for single cell | 4.15±0.05V | ||
| Over charge Detection Recovery Delay Time | 2S | ||
| 9 | Over discharge protection | Over discharge detection voltage for single cell | 2.7±0.1V |
| Over discharge detection delay time | 1S | ||
| Over discharge release voltage for single cell | 3.0±0.05V | ||
| 10 | Short protection | Detection condition | P+,P- short circuit |
| Detection delay time | 200-500us | ||
| Release condition | Cut load | ||
| 11 | Resistance | Protection circuitry(MOSFET) | ≤20mΩ |
| 12 | Primary protection, over-temperature protection |
charge | 60ºC±5ºC |
| charge delay time | 4S | ||
| Overtemperature Charging Recovery | 55ºC±5ºC | ||
| discharge | 70ºC±5ºC | ||
| discharge delay time | 4S | ||
| Discharge delay recovery time | 55ºC±5ºC | ||
| 13 | Temperature | Operating Temperature Range | -20~+85ºC |
| Storage Temperature Range | -20~+125ºC | ||
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
More question can contact :
May Liu : Mob: +86 15225686625 Tel:0755-29407599 Fax:0755-29407499
Web: http://lws-pcm.en.made-in-china.com
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