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China manufacturer OEM high capacity rechargeable small cell lipo lithium ion 3.7v li polymer battery 402030 200mah batteries

100-999 Pieces
1000-9999 Pieces
>=10000 Pieces
Min. Order
100 Pieces
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Company Information

Dongguan Encore Energy Co., Ltd.

CN Manufacturer
Response Time
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US$ 2,000+
3 Years Paid Supplier Gold Supplier Onsite Check Trade Assurance
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Quick Details

Place of Origin: China
Brand Name: OEM
Model Number: EN402030
Size: Max size: 4.2mm*20.5mm*32.5mm
Warranty: 12 Months
Application: Electric Tools,MP3 MP4 MP5
Certificate: ROHS/ISO9001
Cycle life: 500 Times
Battery type: Li-polymer Battery
Payment: Paypal. T/T
Weight: 4.8g+-0.5g
Features: High Energy Density
OEM/ODM: Warmly Welcomed
Type: Li-Ion, Li-polymer
Certification: UL, UN38.3
Selling Units: Single item
Single package size: 21X14.5X4.5 cm
Single gross weight: 0.05 KG
Package Type: 1. Standard export carton packaging or Custom-made Package 2. Mode of Transport: (1) By express UPS/DHL/FEDEX/TNT (It takes 3-5 days to arrive). (2) By air cargo (It takes about one week to arrive) (3) By sea shipment (It takes about one month to arrive) 3. Delivery 4-25 working days after payment and packing confirmation.
Package Preview:

China manufacturer OEM UL approved high capacity rechargeable small cell  37v lipo lithium polymer li ion battery



products information




Battery Construction Profile:


 singel cell profile.jpg


Key Features:

1.High operation voltage
2.High energy desity
3.Long cycle life
4.Minimal self-discharge
5.Wide temperature range
6.Environmentally compatible
7.High level of safety





DescriptionNominal Parameter   Note
1. Nominal Capacity200mAh 
2. Nominal Voltage3.70V 
3. Open Cuircuit Voltage3.80-4.00V 
4. AC Impedance Resistance≤280mΩ 
5. Charging Current(Std.)40mA0.2CmA
6. Charging Current(Max.)200mA1CmA
7. Charging Voltage4.20V 
8. Discharging Current(Std.)40mA0.2CmA
9. Discharging Current(Max)200mA1CmA
10. Discharg Cut-off Voltage3.00V 
11. WeightAround 4.8g 
12.Operating TemperatureCharge0~+45℃ 
13. Storage TemperatureLess than 1 month-10~+45℃ 
More than 6 months-10~+35℃
14. Energy 0.67Wh 
15. DimensionThickness: 4.0mm
Wideth: 20.0+-0.5mm



prismatic battery2

cylindrical battery




Our Advantages





Our Company


Dongguan Encore Energy Co.,LTD, is established in 2016, registered capital is RMB5000000, with workers 200; It’s a high-tech enterprise specialize in the R&D, production, and marketing for the environmental friendly lithium-ion battery;

Our products including Lithium-ion polymer battery, Cylindrical lithium-ion battery, Lithium-ion phosphate battery and related lithium-ion polymer battery and battery pack. Encore Energy has fully absorbed the advanced international management experience, and successfully passed ISO9001:2008 quality system certification since the establishment of the company. All products comply with the RoHS requirements and most of them passed UL, CE, UN38.3, KC, FCC certifications. Our mission: “focus on customer needs, supply competitive products with service”, dedicated to unremitting efforts to ensure the long-term interests of customers.

company information.jpg


production process&packing

















1.Are you factory ?

:) Yes, we are factory at Dongguan China. Welcome to visit our company at any time when you come to China. 


2.OEM&ODM are available?

:) Sure, OEM&ODM are welcome.


3. How to confirm the quality with us before start to produce?

:) (1) You can get a free sample and choose from it, and then we make the quality accordingly.

  (2) Send us your samples or specification sheet, and we make the battery according to your quality.


4. How to solve the quality problems after sales?

:)  (1) Take photos of the problems and send to us

     (2) Take videos of the problems and send to us

     (3) Send back the physical problem battery by express to us

     After we confirm the problems, such as caused by machine, production flow, etc, Within three working days, we will draw up the satisfied program for you.


5. If I want to test Lithium Polymer Battery, what testing requirements there are?

:)  (1) Battery test environment:

         Temperature: 23±2℃;

         Relative humidity: 60± 20% RH;   

         Atmospheric pressure: 86~106 KPa. 

    (2) Measuring instrumentation requirements:

Voltage: Measuring the voltage meter accuracy no less than 0.5 magnitude;
Current: Measuring the current meter accuracy no less than 0.5 magnitude;
Time: Measuring the time meter accuracy no less than 0.1%;
Temperature: Measuring the temperature meter accuracy no less than 0.5 ℃;
Impedance: Measuring impedance should by sinusoidal alternating (1 KHZ) test.