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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: GEB
  • Model Number: 784380
  • Type: Li-polymer
  • Nominal Voltage: 3.7V
  • Size: 7.8*43*80mm
  • Nominal Capacity: 2900mAh
  • Item Name: 784380 3.7v 2900mah li-polymer battery for 7.4v battery pack
  • Discharge voltage: 4.2v
  • Charge voltage: 2.75v
  • Application: Power Tools, LED lighting, digital player
  • Cycle life: 500 times
  • Parts: wire or connector
  • OEM/ODM: Accepatable
  • Certification: CE RoHS
  • Warranty: 1 year
  • Operating time: 0°C ~ 45°C

Packaging & Delivery

Packaging Details 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 3-25 working days after payment and packing confirmation.
Delivery Time 3-25 working days after payment

Lipo Lithium Polymer Rechargeable Battery Pack for Bluetooth Devices/ Electric Toys




Battery modelGEB784380
Nominal voltage3.7V
Minimum capacity2900mAh(0.2C discharge)
Charging voltage4.2V
Discharging cut-off voltage3.0V
Standard charging0.2C /4.2V
Max charging1.0C /4.2V
Standard discharging0.2C/3.0V
Max discharging 

continuous discharge


non-continuous discharge


Shipment voltage≥3.85V

Battery pack impedance

Operating temperature 

Charging:    0°C ~ 45°C

Discharging: -20°C ~60°C

Storage (At 50% SOC and specified temp, 

recoverable capacity in % vs time )    


(12 months ≥85% )

-10℃ ~45℃

(6 months  ≥85% )


(1 month   ≥90% )

20±5℃ is the recommended storage temperature

Visual Inspection

There should not be any remarkable scratches, cracks, 

bolts, cauterization, deformations, swelling, leakage 

and so on the surface of the cell.

Reference standard

GB/T 18287-2013,IEC/EN61960, UL1642





1. Intrinsic safety, non-incinerated under over voltage of 30V charge, non-explosive under piercing.

2. Environmentally friendly. Non-toxic materials

3.Good performance on discharing

4.Long cycle life: 500 cycles remain 80% capacity.



1). Telecommunication devices - mobile phones, Cellular phone, Digital phone, PHS, Bluetooth earphones;


2). Audio and video devices, digital cameras, camcorders, Portable electronic devices - DVD, MD, CD players;


3). Information devices, notebook computers, E-book, PDA;


4). MP3 player, MP4 player;


5). Flashlight, Mining lamp.


We can offer varies of Polymer lithium battery cells and packs according to your requirements. If find any enquiry, please contact me freely.


Reference photos

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About Us



We participate in a variety of trade fairs twice every year .On Electronics Show we discuss with customers 

about our products and help them solve questions face to face.We have established contacts with many 

potential buyers from other places as America, Australia, Belgium, Israel,Germany, the Netherlands, 

Canada etc.




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Transaction Details

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China (Mainland)
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The supplier’s transactions conduted via Alibaba.com in the past 6 months.
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Supplier's Trade Assurance Limit: US $70,000
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