| Charging Current: | 7A |
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| Discharging Current: | 7A |
| Type Voltage: | 12V /14.8V |
| Samples: |
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| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier Product Advantages:
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.| Shenzhen Li-ion Battery Bodyguard Technology Co.,LTD | ||||
| PCM Specifications For 12.8V or 14.8V (4S) Li-ion /LiFePo4 Battery Packs | ||||
| Model:LWS-4S7A-030(4S) | ||||
| No. | Test item | Criterion | ||
| 1 | Voltage | Charging voltage | DC:16.8V or 14.4V CC/CV | |
| Balance voltage for single cell | 3.6/4.20±0.025V | |||
| 2 | Current | Balance current for single cell | 36/42±5mA | |
| Current consumption | ≤50μA | |||
| Maximal continuous charging current | 7A | |||
| Maximal continuous Discharging current | 7A | |||
| 3 | Over charge Protection | Over charge detection voltage for single cell | 3.9/4.25V±0.025V | |
| Over charge detection delay time | 0.5S-1.5S | |||
| Over charge release voltage for single cell | 3.8/ 4.10V±0.05V | |||
| 4 | Over discharge protection | Over discharge detection voltage for single cell | 2.0/ 3.0V±0.08V | |
| Over discharge detection delay time | 0.5S-1.5S | |||
| Over discharge release voltage for single cell | 2.5/ 3.2±0.10V | |||
| 5 | Over current protection | Over current detection voltage | 100±25mv | |
| Over current detection current | 15±5A | |||
| Detection delay time | 5mS-50mS | |||
| Release condition | Cut load or Charging activation |
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| 6 | Short protection | Detection condition | Exterior short circuit | |
| Detection delay time | 200-500us | |||
| Release condition | Cut load or Charging activation |
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| 7 | Resistance | Protection circuitry(MOSFET) | ≤50mΩ | |
| 8 | Temperature | Operating Temperature Range | -20~+70ºC | |
| Storage Temperature Range | -40~+125ºC | |||
| Shenzhen Li-ion Battery Bodyguard Technology Co.,LTD | ||||
| PCM Specifications For 11.1V(3S) Li-ion Battery Packs | ||||
| Model:LWS-4S7A-030(3S) | ||||
| No. | Test item | Criterion | ||
| 1 | Voltage | Charging voltage | DC:12.6V CC/CV | |
| Balance voltage for single cell | 4.20±0.025V | |||
| 2 | Current | Balance current for single cell | 42±5mA | |
| Current consumption | ≤50μA | |||
| Maximal continuous charging current | 3A | |||
| Maximal continuous Discharging current | 3A | |||
| 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 | 0.5S-1.5S | |||
| Over discharge release voltage for single cell | 3.00±0.100V | |||
| 5 | Over current protection | Over current detection voltage | 0.20± 0.025V | |
| Over current detection current | 8±3A | |||
| Detection delay time | 5mS-15mS | |||
| 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 | Protection Temperature Range | -20~+70ºC | |
| Storage Temperature Range | -40~+125ºC | |||
Hot selling Battery BMS model:
3. 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,
About your products,just tell us the relative voltage/ cells/ current A or equipment etc,
The right bms details will be shared .
Any further questions, Welcome to contact our sales person by sending inquiry .
Your satisfaction is our pleasure. Let's Join hands for mutual Benefits!
Suppliers with verified business licenses
Audited Supplier 
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