So for about a month now i've been using the crap batterie packs that you get on ebay and those SUCK and only lasted about an hour and I had enough of it so I went and bought these new batteries called eneloop from Sanyo that apparently have both the qualities of Alkaline and Ni-MH. So far they are great going strong 9 hours and still has four bars .They don't come with a chager but any Ni-MH charger should work they don't take long to charge either so if you want a pack go down to Circuit City or look on Amazon.