Which powerbank?

treeper said:

Hey guys

I'm going on a trip to the Alps in 2 weeks.
I tried to install a USB charger and the satnav straight to the contact, but I'm not the most handy one...
My dealer is busy until the week after I'm back, so I'm looking for another way to extend the battery life of my iPhone and satnav.
So I'm looking into a powerbank, but which one?

Something like this:
Amazon: Powerbank

Click to expand...

if it could be a little larger - search in Amazon for "car jump starter" or "jump booster" ......
this are powerpacks which also can start engines.
i have the afterpartz one, like this - 16800mAh Auto Starthilfe Jump Starter Notstart Ladegerät Akku Notfall BMW Benz | eBay - but with 20000 mAH and 300/600A, which, per description, should be able to start my Diesel Landrover also. But it definitly starts the HS, when battery is to weak for starter.
Of course you also have plenty of power for loading your iphone and/or nav.

Too late for this trip but I've had good luck with this:
http://www.amazon.com/Spirit-A8-Eme...m_sbs_e_9?ie=UTF8&refRID=15NV90TNRRV61R12S1HF

Can jump a car if you need to. Small and light.