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3000mAh Lithium-ion Polymer Battery For Cellphone

3000mAh Lithium-ion Polymer Battery For Cellphone

Basic Info Nominal Voltage: 3.7V Compatible Battery Type: Li-Polymer Certification: RoHS, CB, UL, CE Recyclable: Recyclable Capacity: 500mAh Place of Origin: China Cycle Life: Over 300 Times Use: Bluetooth, GPS, Power Bank Trademark: Ehighsen Specification: RoHS, CE, UL, UN38.3 HS Code:...


Basic Info

  • Nominal Voltage: 3.7V

  • Compatible Battery Type: Li-Polymer

  • Certification: RoHS, CB, UL, CE

  • Recyclable: Recyclable

  • Capacity: 500mAh

  • Place of Origin: China

  • Cycle Life: Over 300 Times

  • Use: Bluetooth, GPS, Power Bank

  • Trademark: Ehighsen

  • Specification: RoHS, CE, UL, UN38.3

  • HS Code: 8507802000

  • Type: Li-Polymer Battery

  • Charger Application: Standard Battery

  • Charger Style: Intelligent Charger

  • Size: Customized

  • Socket Type: For UK

  • Voltage: 3.7V

  • Max Discharge Current: 2c

  • Warranty: 1 Year

  • Shape: Cuboid

  • Color: Silver

  • Transport Package: Standard Battery Package

  • Origin: China

Product Description

503035 li-ion battery 3.7V 500mAh lipo battery for medical device


Charge voltage4.2V
Nominal voltage3.7V
Nominal capacity3000mAh 
Charge current

Standard Charging:0.2C
Rapid charge:1.0C 

Charging time

Standard Charging:2.5H
Rapid charge:1H

Max charge current1.0C
Max continous discharge current1.0C
Max rapid discharge current2.0C
Operating temperature


Storage temperature-10~45ºC
Size(T*W*L)Max 5*30*35mm
Cycle life≥300times

 3.8V RFID battery.jpg

handheld battery 3.8V.jpg

3.7V 5000mah battery.jpg


1.Laptop and Bluetooth headset
2.Cellular phone, Digital phone, mobile phone
3.Military equipment and medical devices
4.Home energy storage
5.MODs and Portable electronic devices



1.Thin format, light weight , large area, and flexibility in design.
2.Easy customized,Energy density,High capacity.
3.super slim design,Ultra-thin Cell, or Thin Cell, as thin as 0.4mm, suitable for Smart    security cards One-time  use devices,
4. Minimal self-discharge, less than 10% monthly.
5. Wide temperature range, operation from :-20°C~+55°C
6. Be charged & discharged at anytime because of non-memory.
7. Environmentally compatible.
8. High level of safety.   


Our factory show

Shipping & Delivery

1.) Samples are always available and normally take 3-5 working days ready to ship. Mass goods usually get ready to ship in 15 working days after deposit received or as per order quantity.

2.) We can offer varies shipping ways, including via express such as  DHL/UPS/FedEx/TNT/EMS(door to door), airlines as well as by sea based on customer requirements.

3.) The shipping discounts is different in different seasons and depends different weight  or volume, we will choose the favourable and safest way according your detail quantity.

4.) Shipping Ports: Default port Shenzhen Port, China.

About our packing factory:



1. Q: Your are Japan company?

A: KAYO BATTERY, a Japan-China joint venture company, was founded in 1999 and completed the technology transfer from Japan.Now it is managed by Chinese people in 2014,but we still keep the Japanese technology.

2. Q: What kinds of products your are production?

 A: we produced lithium battery and li-ion battery, polymer battery ,NI-MH battery

Which are widely used in1.Light: headlamp, emergency light, sloar flashlight, searchlight, lanten,bicycle light, LED light, military 

flashlight, high-end flashlight, high power flashlight, bright flashlight.

2.Outdoor sports products: camping light, mountain bike light, solor emergency light, self-defense flashlight,

3.Customer electronics: MPS, Tablet PC. laptop, Bluetooth earphone, power bank, portable DVD player, 

speaker, microphone, sound equipment, audio, Digital camera, vidican.

4.Home appliances products: electric mop, electric vacuum cleaner, electric children toys, electric shoes, 

electric blanket.

5.Medical devices

6.Instruments and meters: water meter, gas meter.

7.Electric transportation vehicles: electric bike, electric car, e-scooter, electric motor

8.Power tools: electric drill, mower



6.  Q: Are you manufacturer or simply trading company?

     A: We are manufacturer, and we sincerely welcome you to visit our factory!

7.  Q: what’s guarantee time?

     A: Sincere Service

*The refund request should be put forward during the one-year return period. Commodities and all parts should remain intact with labels undamaged.

*In case of defective goods, the extra freight charge incurred from refunding or changing will be covered by KAYO. In case of other reasons, customer shall pay the extra freight or deduct it from the refund.

*The refunding and changing are not acceptable if the goods are contaminated, improperly maintained, or used incorrectly.

 *  We will provide solution within 24 hours after receiving complaint. The cause analysis will be given within 3 days, and the solution will be offered within 7 days.


1. When using the application equipped with the battery, refer to the user's manual before usage. 
2. Please read the specific charger manual before charging. 
3. Charge time should not be longer than specified inthe manual. 
4. When the cell is not charged after long exposure to the charger, discontinue charging. 
5. Battery must be charged at operating temperature range 0 ~ 50°C. 
6. Battery must be discharged at operating temperature range -20 ~ 75C. 
7. Please check the positive(+) and negative(-) direction before packing. 
8. When a lead plate or wire is connected to the cellfor packing, check out insulation not to short-circuit. 
9. Battery must be stored separately. 
10.Battery must be stored in a dry area with low temperature for long-term storage. 
11.Do not place the battery in direct sunlight or heat. 
12.Do not use the battery in high static energy environment where the protection device can be damaged. 
13.When rust or smell is detected on first use, please return the product to the seller immediately. 
14.The battery must be away from children or pets 
15.When cell life span shortens after long usage, please exchange to new cells.


Welcome to buy the quality 3000mah lithium-ion polymer battery for cellphone from our company. We're one of the leading battery manufacturers and suppliers in China, also supporting wholesale service and customized service. For more details, contact our factory now.

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