Curious question... I ordered (and received) my starter kit last week. I went with the Mega PCC. I have noticed that the battery indicator in the PCC for the PV batt is not accurate(?). When I place a batt in that has blinked 4 times and will not produce vapor, the PCC shows that it is half charged. Also, when using a batt that has been charged in the PCC it lasts (approx) half the time that one charged on the USB charger lasts. Is this just normal for a mobile device (charging one batt from another batt)? Just to clarify, I am not a heavy "vaper". When I say they last about half the time keep in mind, one charged in the USB charger lasts me more than 1 full day and one charged in the PCC lasts 8-10 hours. As you can see I'm still getting great life out of them, just wanted to make sure the difference in charge is normal. I don't know all that much about AC vs DC power... SI already offered to replace the PCC, but I'm not a wasteful guy. I'd rather find out if something is truly wrong before I waste product (even if it is their loss not mine). Great service though SI!!! Fast response back to my question, and immediately offering to make it right! I recommend SI to everyone that asks me about my PV!