I'm so glad to hear that Planet Eclipse is switching to AA batteries. I had a 9v charger and rechargeable 9vs for a couple years only because of my paintball guns. I don't have anything else that takes 9v batteries so after my 9v charger died, I never replaced it because I could find a 9v charger in any of the local stores. I'm sure I could of got one off the internet but I just never did, so I have been using disposable 9vs ever since. What sucks about 9vs is that they cost more, and some gas stations don't even carry 9vs. So when you run out, and need to go out and search for 9vs which can be hassle and a definite inconvenience because a lot of paintball fields are no where near an actual store that carries 9v batteries. Rechargeable AAs and the chargers are much easier to come by. Even the disposable AAs are much cheaper and almost every store and gas station carries AA batteries. I can't wait for my guns to incorporate this switch to AA batteries. With the high end loaders using AA batteries, now I just need to carry AA batteries in my gear bag for my guns and my loaders which is great.
Check the News Release of the Planet Eclipse CS1
"It's a valid question. When we sit down to brainstorm a new product we revisit all of the things that people complain about on our existing products and try to address those things wherever possible. The cost and life of 9V batteries is something that players have been complaining about for years and so this was one of the things that we chose to address. The choice of AAs rather than some other form factor was an obvious one as this is the battery used in all of the high end loaders." - Steve Monks, Planet Eclipse