Cell Phones 4000mah Li-ion Power Bank 18650 Universal Mobile Charger

Specifications

Highlights

• Our company has our own factory,so we can get the products directly from our factory
• 100% real capacity : we make our serious commitment hereby that we will never mark the fake capacity on our cell ,and never use the second cell on our product
• High safety performance : we will conduct full inspection our product by matching our product to the device ,we use the brand new battery cell  ,and there are 5 protection layers with our product by installing BMS system 
• High cycle life performance :more than 500 times 
• Multiple colors are available
• Low self discharge,no electric leakage,high hopwer retention rate
• Can be used for many kinds of digital devices,such as iphone,ipad ,and other brand mobile phones
• With 4led lights to show remaining power

OEM/ODM service 

• Design package box
• Printing your LOGO on the products. 

      Silk-screen printing

      Color printing

      Laser engraved printing

      Water transfer printing

      etc.

•  Open new model and develop new products

      we have professional engineers, can provide free new PCB develop for power banks.

      Our model factory will only charger the basic model cost for any new models.

Maintenance       

 Keep your power bank battery operation to its fullest potential,making sure to do as folow:

1. Recharge your backup battery once every three months when it is not in use;