(Readers, take note of the promo code at the end of this post.)

There are a number of ways to deal with device battery life issues while traveling. I personally like using a Mophie Juice Pack Air on my iPhone because I can just flip the power switch when I need a boost. It does have its downsides though:

• Not everyone wants a bulky case on their iPhone.
• The Juice Pack Air can't charge an iPad or anything else than the iPhone it's protecting.

That's why I'm interested in the upcoming NomadPlus, an external battery that integrates with any modern Apple wall adapter.

Insert the adapter, plug it in like normal, and the NomadPlus will first charge your device before charging its own internal battery. When it's time to leave, unplug the unit and you've got an extra 70% charge (based on the iPhone 5s battery) ready to go when you need it most.

The official release date isn't until November 30th 2014, but you can pre-order a NomadPlus now for half-off ($19.50, down from $39) if you use the code NOMADPLUS at checkout.