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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: witkey
  • Model Number: W-19
  • Dimension: 114*58*8mm
  • Weight: 110g
  • Outport: 5V 1A
  • Input: 5V/1A
  • Socket Type: USA/EUO/UK
  • Name: 4000mah power bank
  • Battery: polymer
  • capacity: power bank 4000mah
  • feature: metal power bank
  • Power efficiency: 80%
  • Charging time: 5 hours
  • Colour: customized
  • Overcharge protection: yes
  • Certification: CE/ROHS/FCC /UN38.3/MSDS/ISO9002
  • Warranty: 1 year
  • Capacity: 4000MAH

Packaging & Delivery

Packaging Details blister packing
Delivery Time 5-7 working days

  New model fashion metal external power bank 4000mah



New model fashion metal external power bank 4000mah


We Promise: ISO 9002 factory surpport  4000mah metal mobile power bank


1. All products is Real and Full capacity , fake one lose ten.


2. All battery be in explosion-proof desgin


3 All power banks passed two charge-discharge cycle test , aging test before sending


4. All power bank be in anti-over charge design.    

ISO 9002 factory surpport 4000mah portable mobile power bank

Name4000mah Mobile Power Bank
Cell TypeLi-Po
InputDC 5V/1A
OutputDC 5V/1A
Power Efficiency80%



Best Factory Price;

Top Quality power bank with 1 year warranty;

Can OEM any design with NO MOQ!!

Accept OEM and ODM;

Comply with FCC, CE, RoHS requirements;


About Sample:

We'd very like to send you the power bank sample for quality reference and parameter test, we will charge a sample fee which will be refunded after receiving your mass order;


About OEM:

We accept both OEM and ODM, we have our experienced RnD team to turn your idea into actual power bank products;

OEM logo on products has no MOQ requirements and will not add cost to unit price;

OEM logo on package need an MOQ of 1000pcs and add little to cost;


After-sale Service:

We provide 1 year warranty counting from the date of purchasing, excluding damages caused by human or force-majure;

We have an experienced technogy-support team to solve all your problems confronted when using our power bank products;






Transaction History of the Supplier

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Transaction Overview


Transaction Details

This supplier has completedtransactions with buyers from .

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China (Mainland)
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Supplier Assessments:
4 Transactions 90,000+
The supplier’s transactions conducted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $33,000
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