Shenzhen Usbangel Technology Limited is a Professional, Certified to ISO 9001:2015, BSCI, Verified Supplier; is a Trusted Custom Manufacturer (Factory). Extensive experience in OEM/ODM, authentic and patented product design and manufacturing. Chargers, Power Banks, Wireless Microphones, Design, and Manufacturing. Manufacturer(Factory), Supplier, and Exporter from Shenzhen China. Low MOQ, Great Deals, Customizable. Quality Assured. Trade Assurance.

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Power Bank supply tips:

1, The vast majority of the Power Bank lithium-ion batteries as energy storage bodies, according to the chemical characteristics of lithium-ion, the new Power Bank supplies after 3 full charges and discharge to use, to achieve the maximum storage effect.

2, The nominal capacity of the Power Bank refers to the Power Bank inside the battery capacity, not charge into the phone's effective capacity. The effective capacity of charging the mobile phone depends on the conversion efficiency of the Power Bank supply and the charging efficiency of the mobile phone.

3, Power Bank supply for charging the mobile phone is a kind of energy conversion process in the charger process, there will be a part of the electric energy to heat energy loss, so in the process of charging the Power Bank, as long as the fever does not exceed 60 degrees all belongs to the normal phenomenon.

4, The Power Bank battery has a certain cycle life, each charge will shorten its service life, so please do not frequently plug and charge.

5, Power Bank supply for charging the mobile phone, the mobile phone will power consumption in the standby state, especially when the surrounding telephone network signal is not good, mobile phone power consumption more, will consume part of the Power Bank, so that when the mobile phone is full of electricity, please promptly disconnect the mobile phone and mobile charging power supply the connection.

Three-pack service:

Anticipate your needs and bring our care to you. For you to bring more experience to the customer service to bring you a feeling of pleasure.
To protect your rights, please pay attention to the following information!
Buy products, to get the guaranteed repair, replacement, and return (referred to as the "three-pack") rights, please:

1, At the time of purchase, ask for a valid purchase invoice or purchase accessories (if purchased separately) invoice and safekeeping. Effective purchasing invoice means: the invoice shows the attachment model, lot number and the date of purchase, the amount of the content, and the seller seal.

2, Effective warranty card and invoice is the basic guarantee to realize the "Three Guarantees".

The "three-pack" rights:

For products in the repair period, you can get a free warranty, please refer to the details of the warranty
The product can not be used for two times within the period of validity of the three packages, you can choose to return. At the time of the return of the sale price of a separate refund. By the dealer to provide you with return service.


If you are in the warranty period of the product (whether or not to buy a separate purchase) failure, please, together with the effective purchase invoices, back to the customer service center(customer prepaid freight). Customer service center after the initial inspection, for you to the repair center maintenance.

If you have any questions, you can call the customer service hotline (unified hotline: +86-755-8981-2692). Official Site (URL: inquiries, the final interpretation of the company. If you are in the warranty period of the product (whether or not to buy a separate purchase) failure, please bring a valid purchase invoice, and go to buy the dealer. After a preliminary inspection of the dealer, you will be sent to the service center.

Three-pack performance fault table:

-- The charger does not work or work is not normal, can not apply to the specified charger charging
-- Battery charging is still not working properly. Judge the battery capacity is not less than 80%
-- The Power Bank supply can not be normal
-- Data reader cannot work properly
-- Protective film surface cracks