The DemerBox battery is designed to last a long time. This article includes many tips for getting the most out of it.


How long does the DemerBox last between charges?

Our original DemerBox (no exterior volume control) can last 50 hours or more when fully charged. This is assuming the ambient temperature is 72F, or 22C. If it's colder, the battery life will be reduced. If you're using your DemerBox to charge your phone, GoPro, or other device, this will also reduce the battery life.


Our new DB2 model (exterior volume control and battery indicator lights) can last 40 hours or more when fully charged. Again, this assumes the ambient temperature is 72F, or 22C. The battery life will be reduced when it's cold out. If you're using your DemerBox to charge your phone, GoPro, or other device, this will also reduce the battery life.


How long does it take to charge a DemerBox?

It takes about 4-5 hours to fully charge a flat DemerBox battery. You'll know the battery is fully charged when the light on your DemerBox charger goes from red to green. Not sure how to charge your DemerBox? Check out this quick walkthrough.


Can I leave my DemerBox battery charger plugged in all the time?

You technically can, but it will shorten the life of your battery. Lithium Ion batteries are happiest when they are 40% charged and stored at 59F, or 15C. They do not need to be fully discharged or fully charged for best battery maintenance.


What happens to the battery when I use the USB device charge feature?

Your battery will drain a bit faster depending on the energy pulled to your device. The amount of battery drained from your DemerBox will also depend on how much charge your USB-connected device needs. If you're unsure if your DemerBox battery is operating properly and you've been charging devices, we recommend fully charging the DemerBox and using it for one power cycle without charging a device.


Can the DemerBox team replace my battery?

We sure can! Depending on when you bought your DemerBox, we might even be able to fix it for free. Every DemerBox comes with a 1 year warranty on all parts and labor with a few exclusions for damage. In either case, open a support ticket so we can assist you further.