Quote Originally Posted by Don B
Quote Originally Posted by Alex
If I understand your needs correctly all you need is a double USB charger, I have installed one and it has constant power.

http://www.ebay.ie/itm/Genuine-New-Dual-USB-In-Car-Charger-Twin-Port-Mini-Griffin-Jolt-for-iPad-3-4-5-/271262780689?pt=UK_MobilePhones_MobilePhoneAccesso ries_MobilePhoneChargers&hash=item3f28858d11
Can that just be left in the cig lighter permanently?
Mine is, did not have any power drains etc. have it for few weeks. I presume that either it turns of when car is locked or something, I should actually test that out.