Initially purchased keyring model it DIDNOT charge my smart phone, soooo back to Best Buy it went, exchanged for this device, I'll call MJPP. It charged my smart phone overnight, but was completely drained.
MY SUGGESTION: charge you smart/cell phone to 100% and MJPP too before leaving home. when phone is at aprox 50% use MJPP to charge to 100%. recharge MJPP in the car if you can. will it charge your Ipad, I have my doubts.