Been wondering about this for a while. I've got rechargeable coins for the backup battery, which I can swap and charge through USB on my desktop. Just been wondering about charching main batteries on the device though - after buying some cheap
(really cheap, 800mA
) nimh cells, I was wondering if I could convince it that the battery pack is a rechargeable battery pack.
I had a proper rechargeable pack once, but it was broken, so I tried to reverse-engineer it. The main difference I found was that
(aside from the cells being a little smaller than AAs, and there not being room for AAs
) there was a second metal contact at each end, which was wired to the first - basically meaning that instead of something like
----(+cell-)(+cell-)----
I've got
==>-(+cell-)(+cell-)-<==
with the two contacts. Likewise, there's two contacts in each side the battery compartment in the device itself.
This being the case, would wiring both contacts on each side together - to simulate what the "proper" rechargeable pack had - enable me to charge AA cells using the device, rather than an external charger? I've done it preliminarily, and it seems to be working so far - I just don't know if it's something I'd "get away" with...
(And could I use a USB charger for a PSP*?
)
*It's a PSP mains charger I'm using. It does everything I've got except the Jornada - the Compaq, my OpenPandora, my Toshiba e350 and e800. I don't even own a PSP, and never have.