Phone Geek says:
Actually, your power usage (of auxilary power source) is a product of the iPhone; that is why I mentioned all the ways your iPhone uses power (that has to be replaced by the auxilary power source). So...how much power the iPhone uses will determine how much backup power your auxiliary power source will compensate for. Since you mentioned that you were not recharging your backup via solar, then whether you use a little power or all at once adds up to the same end expendedure. You are using the same amount of backup power in either scenario; it makes no difference how you use it. I would concentrate more on power conservation in the iPhone than on how to recharge it (so to less deplete the power source)
