• sungzu faq


Q:Are you a factory or trading company?
A:We are the power bank and solar back-up power supply factory more than 10 years,supplying OEM/ODM service

Q: What is your battery cell inside?
A: All our batteries are grade A Li-ion or polymer battery, to promise you
a safe, stable charging environment, lasting battery life.

Q: How long is the life span of power bank?
A: 500+ cycle times

Q: Is there any test before delivery?
A: Yes,all the products will do two recycle charge-discharge test ,around 20-30 hours.

Q: How to proceed if I have my own logo to print?
A: First, picture for visual confirmation, next is sample picture or sending sample to you for confirmation, finally we will go ahead for mass production.

Q: Can I have a sample order?
A: Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.

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