[quote name='cochesecochese']Yeah, I'm asking about the individual battery charger NOT the AC adapter. Being able to swap out batteries is mother
ing key.[/QUOTE]
Alright, I tried putting the new PSP Slim battery into the old charger and it doesn't seem to work.
The biggest problem is that the new battery is slimmer, so the little finger nub prevents you from shoving it all the way down into the charger for a snug fit. If you angle it in, though, it seems like you can get the contacts to make... contact.
Regardless, the orange charger light started flashing shortly into the process, indicating that it isn't working correctly. So, I don't think they're compatible. I hope someone else can prove me wrong, though.

Alright, I tried putting the new PSP Slim battery into the old charger and it doesn't seem to work.
The biggest problem is that the new battery is slimmer, so the little finger nub prevents you from shoving it all the way down into the charger for a snug fit. If you angle it in, though, it seems like you can get the contacts to make... contact.
Regardless, the orange charger light started flashing shortly into the process, indicating that it isn't working correctly. So, I don't think they're compatible. I hope someone else can prove me wrong, though.