Frequently asked questions

What kind of warranty do I get on my KOLUMAN product?


For any defect, in the judgment of our technician, caused under normal use, we offer free repair within 12 months of purchase at the discretion of our company. A valid warranty card and original purchase invoice must be presented upon request of warranty service.




What kind of devices can KOLUMAN power bank support


Most of KOLUMAN power bank are universal which means it can charge up most of the USB-powered devices, either with the cable included in our product package or with the original cable of your device. However, different mobile device manufactures offering different charging cable and different mobile devices have different charging standard needs to comply with. Therefore, we suggest to use the cable included in our product package or original USB cable included with your mobile device to charge your devices.




What is Plug and Go?


Most of KOLUMAN power bank is equipped with Plug and Go function. It will charge the device automatically once you plug the cable in, shut down and switch to power-saving mode within 25 seconds when no device is connected.




What is USB Type C?


USB Type C is not just a new development. It's a new standard. It promises high speed data transmission, ease of use and universality. It can be applied to all sorts of devices such as smartphones, tablets, laptops, digital cameras, or anything that traditionally connects via USB.




What are the benefits of Type C cables?


Reversible Connector. The USB Type C, or Type-C connector is user friendly. There's no up or down orientation so it works regardless of which way you plug it in.

Truly universal. It works with smartphones, tablets, laptops, digital cameras, or anything that traditionally connects via USB.

It's fast. Type C cable can transfer data up to 480Mbps.

Our latest models DTC1, DTA1 & DTAF1 are Type C cables.





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