Picked up two of these last night. We SHOULD already have a similar charging bank in each car already, but sometimes they get removed for other uses and not put back where they belong, so having backups is not a bad thing.

I'm sure I could find something smaller if I looked around, but for 7 bucks, what the heck.





It's pretty basic. Just a USB in/out for charging it or using it to charge other devices.
(our other units have an integral wall outlet plug and cig lighter plug for charging the device)




Not really seeing the value in the caribiner. Keeping it on the exterior seems like a bad idea for an electronic gadget.
I guess it could be handy to hook it someplace where you can still use your phone while it's connected/charging though.