4s 30A 14.8V Li-ion Battery 18650 BMS

• Customization: Available
• Battery Series: 3s/ 4s
• BMS Type: 14.8V Li-ion/Lithium Ion Battery BMS
• Model NO.: LWS-4S30A-015
• Charging Current: 30A
• Discharging Current: 30A
• Type Voltage: 14.8V
• PCM Size: L125*W35*T9mm
• Balance Current: 42mA
• Type Charging Voltage: 16.8V
• Temperature Protection: Yes
• Testing Service: 100%E-Testing
• Transport Package: Anti-Static Bag Packaging/ Carton Packaging
• Specification: L125*W39*T5mm
• Trademark: LWS
• Origin: China
• HS Code: 8536300000
• Production Capacity: 50000 Pieces /Months
• Package Size: 15.00cm * 5.00cm * 2.00cm
• Package Gross Weight: 1.000kg

Product Description

1. Product Description

 BMS Product feature:

• ^{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} 

 About the battery BMS/PCB/PCM

Function^{_: 
Detect and protect the battery from over-charge  /over-dicharge / over-current short-circuit / temperature detecting protection /auotmatically voltage balance function .}
Common Version : common port for charge/discharge 

Separate Version : separate port for charge/discharge

We can customize any PCB from 1S to 35S lithium batteries with different current.

3.6V 3.7V 3S/ 4S  lithium Li ion battery 18650 BMS 15A 20A 25A 35A 45A 60A battery BMS  With balance
  If you feel that this product does not meet your requirements, you can consult our staff, you can recommend or customize the lithium battery protection board you want.

   

• Description of application effect 

    (Battery Management System) BMS can extend battery life and make battery work safely.

 

     This model can be used for solar, LED lights, Emergency lights, Digital Equipment, etc.electric scooter,e-bike,tourisr
sightseeing vehicle,electric tricycle,low speed ev,emergrncy ups,solar street light,RV&home energy storage......

  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. 

Mode	LWS-4S30A-015(4S)
PCM Size	L125*W39*T5 mm
battery series	3S-4S Available
working current	30A Available
Application	LED lights, Emergency lights, Digital Equipment, etc
Sample	available

 

Wiring:
1. First connect the B- of the BMS to the total negative pole of the battery pack;

2.The cable starts from the thin black one connecting B-, the second red wire connects the positive pole of the first string of batteries, and the next string is connected in turn to positive pole of the battery,B-,B1,B2......B4; then insert the cable into the BMS; (The maximum number of strings is 3-4 strings, the example picture is 4 strings) (Please weld the wires in order and avoid pseudo solder joints.)  
3. Connect Charger C-/Load P- with BMS C-/P- (Use larger size wires) 
4. Connect Positive Pole: Charger C+/Load P+ with Battery Pack B+ (Use larger size wires) .

 

PCM Specifications  For 14.8V(4S)Li-ion Battery Packs
Model:LWS-4S30A-015(4S)
No.	Test   item		Criterion
1	Voltage	Charging voltage	DC:16.8V  CC/CV
		Balance voltage for single cell	4.20±0.025V
2	Current	Balance current for single cell	42±5mA
		Current consumption	≤25μA
		Max continuous charging current	30A
		Max continuous Discharging current	30A
3	Over charge Protection	Over charge detection voltage for single cell	4.30V±0.025V
		Over charge detection delay time	0.5S-2S
		Over charge release voltage for single cell	4.10V±0.05V
4	Over discharge protection	Over discharge detection voltage for single cell	2.40V±0.08V
		Over discharge detection delay time	50mS-150mS
		Over discharge release voltage for single cell	3.0±0.10V
5	Over current protection	Over current detection voltage	200±15mv
		Over current detection current	100±20A
		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	Operating Temperature Range	-40~+85ºC
		Storage Temperature Range	-40~+125ºC

3. FAQ
1. who are we?
We are based in Guangdong, China, start from 2013,sell to Domestic Market(50.00%),Southeast Asia(8.00%),Eastern Europe(5.00%),Mid East(5.00%),Western Europe(5.00%),Northern Europe(5.00%),Southern Europe(5.00%),North America(3.00%),South America(3.00%),Oceania(3.00%),Eastern Asia(3.00%),Central America(2.00%),South Asia(2.00%),Africa(00.00%). There are total about 11-50 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.what can you buy from us?
Battery Pack BMS,Lifepo4/Lithium Ion PCM,Protection Circuit Board,Print Circuit Board,Lifepo4/Lithium Ion Battery Pack

4. why should you buy from us not from other suppliers?
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

5. what services can we provide?
Accepted Delivery Terms: FOB,EXW;
Accepted Payment Currency:USD,CNY;
Accepted Payment Type: T/T,L/C,PayPal,Western Union,Cash;
Language Spoken:English,Chinese