On the trip to Ballarat for the National Rally the power outlet on Streak's ST stopped working
This was an issue as we were using Streak's phone as a GPS and without power GPS apps will flatten a phone battery in no time at all

So to keep going until we could fix the power outlet we plugged the phone charger into the XP-3 jump starter and placed it in the side pocket

It kept the phone going all the next day

So it's got a few ways of saving you when out and about

Definitely a good investment

Cheers
Shiney