Featured Products

Must have products from our top sellers

Customized R&D

We have a professional R&D team that can quickly design customized solutions according to your needs.

24-Hour Response

Our sales staff will be online 24 hours a day to quickly respond to your needs.

72-Hour Solution

Our R&D and design team will provide you with satisfactory solutions within 72 hours.

5 Year Maintenance

Our products provide 3-year warranty, 5-year battery maintenance and consulting services.


Delong Energy is a enterprise which dedicated to the R&D, manufacture and sales of rechargeable lithium ion battery packs. Delong Energy was founded in 2012, with its factory in Guangdong, China.

Since its establishment, Delong Energy is committed to serve global portable power bank, storage energy battery packpower battery pack, backup battery pack and special usage battery users. During 9 years development, Delong Energy has become a world’s leading supplier of lithium ion battery pack.