Shenzhen Green Energy Tech Co. Limited


Cylindrical Lithium Battery supplier


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Safety High Performance Lipo Battery / 300mAh Rechargeable Li Polymer Battery With 40mm Length

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Safety High Performance Lipo Battery / 300mAh Rechargeable Li Polymer Battery With 40mm Length

China Safety High Performance Lipo Battery / 300mAh Rechargeable Li Polymer Battery With 40mm Length supplier

Large Image :  Safety High Performance Lipo Battery / 300mAh Rechargeable Li Polymer Battery With 40mm Length

Product Details:

Place of Origin: China
Brand Name: Greenergy
Certification: CE, FCC, ROHS
Model Number: 303040

Payment & Shipping Terms:

Minimum Order Quantity: 200PCS
Price: Negotiable
Packaging Details: Standard Air or Sea transporation package
Delivery Time: 10 working days
Supply Ability: 500,000PCS per month
Detailed Product Description
Item: 3.7 V Li Poly Battery Normal Capaicty: 300mAh
Certificate: CE, RoHS, UL, SGS Thickness: 3.0mm
Width: 30mm Length: 40mm
Cycle Life: 500 Cycles Or More Application: LED Light, Handse


Li Polymer Battery Pack Lthium polymer 303040 3.7V 300mAh small size li-po cell suibtable for OEM battery packs






1, High energy density

2, High working voltage for single battery cells

3, Pollution-free

4, Long cycle life

5, No memory effect

6, Capacity, resistance, Voltage, platform time consistency is good

7, With short-circuit production function, safe and reliable

8, Factory price& High quality

9, Good consistency, low self discharge

10, Light weight, small size




Main Application:


li polymer rechargeable battery for Flashlights, smart phone, bluetooth headest, loundspeakers, traffic tester, curing light, portable outdoors speaker, vehicle intelligent terminal, LED light, handset,






Name Lithium Polymer Battery
Model Number 303040
Voltage 3.7V
Capacity 300mAh
Dimension 303040
Inner Resistance 300mΩ
Weight 2.5g
Standard Charge Current 0.2C/0.5C
Maximum charge Current 1C
Open Circuit Voltage 3.7~3.9V
Cut Off Voltage 2.75v/4.2V
Cycle Life 500 Times
Appearance Without scratch, distortion, contamination and leakage
PCB Optional
Wire Optional
Certificate CE, RoHS, UL, SGS





Standard package. Each battery will be packed in a single small box, then two piece battery inside a medium box. 10kg batteries in a big box.




Why us


1. Professional lithium-ion battery for over 10 years,have own factory.
2. Strong R&d team to support.
3. Provide best brand cell: Sanyo,Panasonic,Samsung,LG,Sony.
4. BMS solution come from NSK and Recoh.
5. Offer OEM service for customer small order.
6. Quickly action & respond.
7. Best sale service and good price.





Q: How about the warranty of li ion batteries?

A: Warranty of li-ion battery could be as long as 1 year.


Q: How long will be the delivery?

A: Usually, batteries in stock, delivery 10-15 days. Batteries without stock, delivery 20-25 days.



A: No limit for standard models, 1000PCS for non standard models.


Q: How to contact with you?

A: You could send me a email or contact me on Skype (ID): mars.mao



Return Policy


Green Energy May Accept Returned Defective Product

Defective merchandise may be repaired or replaced if returned within the warranty period. All returns must be accompanied with a Return Merchandise Analysis Report and must be packed with all manufacturer documents, and complete with all accessories. Important: Green Energy may not issue cash refunds for defective returns; Green Energy will however repair or provide a replacement part if the merchandise is checked and accepted for return. All returned merchandise must have the Green Energy Product Model number and Purchasing Order number when returned. International customers are responsible for all duties, and customs fees charged by their country and for shipping costs.





Safety Precaution

1. Do not throw battery into water or make it wet;
2. Keep the battery away from heat source(like fire or heater);
3. Do not throw the battery into fire or heat the battery;
4. Forbid to hammer to trample the battery;
5. Forbid disassembling the battery in anyway



Contact Details
Shenzhen Green Energy Tech Co. Limited 

Contact Person: Mars Mao

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