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Home  >  Products  >  18650 lithium Power Bank  >  3000-6000mah  >  li-polymer battery portable power bank 4000mah

li-polymer battery portable power bank 4000mah

li-polymer battery  portable  power bank 4000mah
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  • li-polymer battery portable power bank 4000mah
  • Place of Origin: shenzhen,china
  • Dimension: 66*117*9mm
  • Input: 5V 1A
  • Outport: 5V 1A
  • Capacity: 4000mah
  • Weight: 116g
  • Color: white,black,blue,red,pink
  • Name: li-polymer battery portable power bank 4000mah
  • Application: for all of the smartphone,camera,tablet,PSP,MP3player,MP4player...and so on
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li-polymer battery  portable power bank
1.plastic shell power bank
2.universal power bank
3.ultra thin power bank
4.Triple protection:overcharge, over discharge, short circuit protection

main parameter:

Battery  capacity

4000mah portable power bank

Battery  cell  type

polymer battery


5V / 1A


5V / 1A

Charging  time

5 hours

Lighting time

300 hours


plstic shell portable power bank

Cycle life


match product

98%digital product

Work temperature


Protection functions

Software protection board, with double protection

Devices supported

iPhone, Samsung galaxy, other mobile phones, MP3 players, MP4 players, PDAs, digital cameras, handheld game consoles, Bluetooth devices and so on





Product dimensions


Carton size


product  pictures:

Packaging detail: 

power banks

Beautiful gift box / piece(100*169*29mm)

our services:

1.Customized packing and logo are accepted.

2.Sample order is welcome and Sample fee will return to you in the bulk order.It also can be free if your are the real customer.

3.Accept various transportation ways,such as by express,by sea,by air and also specified freight company.

 After-sales Service 

1. Our factory strict inspection will reduce defective within 3%. It at most protect our customer benefit and brand name.

2. We provide 1 year warranty to the products we sold out.
3. We will continue provide technical support for our customer.


1. What is your battery cell inside?

A:  All our power bank uses oringinal Lithium ion battery,A grade battery to promise you a safe, stable charging environment. 
2. What is your minimum order quantity?
 The MOQ is 500PCS, but the quantity for packages should be 1000PCS for OEM orders.

3. What are the payment terms you accept?
A: We accept T/T, Western Union, Paypal, L/C, etc.
4. What are the shipping ways you can offer?
A: We can delievry the goods by air /land express according to customers' requirements.
5. How long warranty you supply?
A: All products from ShenZhen LiLiangWei Technology Co..,ltd are with 1 year warranty.


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