Factory Wholesale Battery PCM Li-ion 3s /4s 5A 7A LiFePO4 Battery Pack 4s BMS

• Customization: Available
• Charge Current: 7A
• Discharge Current: 7A
• Model NO.: LWS-4S8A-451
• Over Discharge Protection Voltage: 2.2V/2.70V
• Rated Voltage: 12V/ 14.8V
• Over Current Protection: Adjustable
• Over Charge Current Protection: 20+/-5A
• Short Circuit Protection: Yes
• Temperature Protection: 70 Degrees, 75 Degrees
• Metal Coating: Copper
• Mode of Production: SMT
• Layers: Single-Layer
• Base Material: Fr-4
• Certification: RoHS, ISO
• Customized: Customized
• Transport Package: Anti-Static Bag Packaging/ Carton Packaging
• Specification: 50*16*3.5mm
• Origin: China
• HS Code: 8536300000
• Production Capacity: 5000PCS/Month
• Package Size: 6.00cm * 2.00cm * 0.50cm
• Package Gross Weight: 0.500kg

Product Description

Factory Wholesale Battery PCM Li-ion 3s /4s 5A 7A LiFePO4 Battery Pack 4S BMS

Product Advantages:

• ^{Supply OEM/ODM and custom service}
• ^{High quality with smart balance function}
• ^{Wholesale price}
• ^{ISO9001/ISO14001/CE/ROHS certificates}
• Fast delivery
• ^{Green product}
• ^{One year warranty}
• ^{Excellent safety performance}
•  ^{Short circuit testing passed}
• ^{Overcharge testing passed}
• ^{Over discharge testing passed}
• ^{Original imported :IC from Japan,MOS from USA,Components from Sumsang.}
•  ^{1.2m drop testing passed}
• ^{100% testing} 
• ^{Support ODM & OEM services} 

  Shenzhen Li-ion Battery Bodyguard Technology Co.,LTD
  PCM Specifications  For 12.8V (4S) LiFePo4 Battery Packs
  Model: LWS-4S8A-451(4S)
  No.	Test   item			Criterion
  1	Voltage		Charging voltage	DC:14.4V  CC/CV
  			Balance voltage for single cell	/
  2	Current		Balance current for single cell	/
  			Current consumption	≤50μA
  			Max continuous charging current	8A
  			Max continuous Discharging current	8A
  3	Over charge Protection		Over charge detection voltage for single cell	3.85V±0.025V
  			Over charge detection delay time	0.5S-1.5S
  			Over charge release voltage for single cell	3.67V±0.05V
  4	Over discharge protection		Over discharge detection voltage for single cell	2.2V±0.08V
  			Over discharge detection delay time	50mS-150mS
  			Over discharge release voltage for single cell	2.65±0.10V
  5	Over current protection		Over current detection voltage	100±25mv
  			Over current detection current	20±5A
  			Over charge current dection current	20±5A
  			Detection delay time	50mS-150mS
  			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	Wire break protection		Wire break determination condition: * Signal line false welding * Signal Line fall off	* Charging cut off  * Discharge cut off
  9	Temperature protection NTC Thermistor		Charging high temperature protection	50ºC±4ºC
  			Charging high temperature protection recovery	40ºC±4ºC
  			Charging low temperature protection	-10ºC±4ºC
  			Charging low temperature protection recovery	0ºC±4ºC
  			Discharging high temperature protection	70ºC±4ºC
  			Disharging high temperature protection recovery	60ºC±4ºC
  	OrTemperature protection Switch		Temperature Switch (high temperature)	75 °C
  10	Temperature		Operating Temperature Range	-20~+70ºC
  			Storage Temperature Range	-40~+125ºC

  Photos of the pcm model LWS-4S8A-451(3S &4S) With over charging current protection function

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5. FAQ

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,
 

Any further questions, Welcome to contact our sales person by sending inquiry .
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