hello my name is Ruub van den Berg.
Actually my idee is very simple. Make a battery power station, so when you have 2 batteries you use one for in your Ara phone and the other one for your power station so it can load.
If the battery in your ara phone is dead you can exchange the two batteries. If you do it like this you always have a charged battery in your Ara phone.
Its a simple idee but very effective.
I hope you know what I mean because I am from the Netherlands so my English is very bad.