how do I convert 2 AAA batteries to AA
I have an electronic device that uses two AAA batteries internally. Instead of replacing them every couple hours, is there a way to use AA or other batteries to extend the life? The AAAs are encased in a closing lid, so there's no room for AAs but I am thinking there should be a way to solder some wires to connect them. On the slow drain usage, the 2500 mAH AA should last 2-3 times as long as the 900mAH AAAs. Is this correct? And is there a way to put more batteries in battery pack [series or parallel] without frying the device? Thanks for any feedback.