Using your DemerBox

How do I make my DemerBox waterproof?

  1. Insert the port plug into the port hole on the outside of the lid Tighten port plug so that you can lift the box into the air while holding onto the port plug.
  2. Make sure nothing is obstructing the lid gasket.
  3. Both latches latched on the outside of the box.

What can I put inside my DemerBox?

Basically anything that fits! Keys, wallet, socks, a sandwich. Playing music with stuff in your DemerBox will change the tone and might reduce the bass response. When I travel (this is Demer writing this) I pack my DemerBox into my bag and stuff it full of socks and t shirts to save space.

Can I play music from the USB Port?

No. The USB port is for charging your stuff. If you plug a USB memory stick into the USB port and expect to hear music, you won't.

Does a DemerBox float?

Yes it does, as long as the Port Plug is properly inserted and tightened in the port hole (outside the box, not inside) and the lid gasket is clean and the box is latched properly.

Can I bring a DemerBox as a carry-on in an airport?

Sure can. TSA agents may be curious about it, and maybe a little envious, but it's totally fine to carry on. We've also checked a DemerBox as luggage and it's so rugged it can handle that just fine too.

Charging your DemerBox

How long does the DemerBox last between charges?

Built in a crush-proof Pelican case, DemerBox lasts an incredible 40 hours between charges. Plus, it has internal USB charging to keep your devices juiced up for your entire adventure!

How long does it take to charge a DemerBox?

It takes approximately 4 hours to charge full when battery is depleted.

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.

Caring for your DemerBox

How do I clean my DemerBox?

We recommend using soap and water, or those "magic eraser" things. Avoid spraying the speaker cones with a hard spray of water and if you're really going for a hard cleaning session, we recommend putting the port plug in place to avoid getting water inside the DemerBox. You can dry with a towel, or anything that is handy.

Can I throw my DemerBox into a body of water?

It’s a fun party trick but the DemerBox will often land face down and the pressure of the water slamming into the speaker cones can potentially damage them.

Warranty, Repairs & Returns

What if my DemerBox battery isn’t working?

If your DemerBox battery is not performing as it should, we can replace it. Read more about our return policy.

What if my DemerBox needs a repair?

Every DemerBox is fully serviceable. If wear and tear takes a toll on your DemerBox outside of the warranty period, ship it back to us and we will repair it for you at a fair cost. Please contact us at to set up a repair.

What do I do if my DemerBox breaks?

If your DemerBox is not working properly, please send us an email! If we determine that its a manufacturers defect, we'll fix it for free. If it's your fault, we may charge you for the repair.

What warranty comes with a DemerBox?

The DemerBox warranty covers defects in materials and workmanship in every DemerBox product for one year from the time of purchase.

If your repair is covered under the DemerBox warranty, we will repair or replace the defective item free of cost. If we determine that the problem isn't covered under the warranty we will repair your DemerBox for a fair price. The warranty period is not extended if we repair or replace your product.

There are some exclusions to the DemerBox warranty, including:

  • Problems that result from external causes such as accident, abuse, or misuse.
  • Problems resulting from an improperly installed port plug.
  • Not using a DemerBox approved charger.
  • Components being tampered with or any alterations made to your DemerBox.
  • Any items that are damaged or destroyed while being stored inside your DemerBox.

How can I return my DemerBox?

If you are not fully satisfied with your new DemerBox, please return it to us within 30 days, in as new condition, and we will refund you your purchase price.

Can you ship to an FPO address?

Yes! Are you a US military person living on a base overseas? We can ship to you as if you are in the continental USA. Read more about our shipping policy.