I use a Maha PowerEX C-9000 for both AA and AAA rechargeables. It's a bit large and bulky for travel, so on the rare occasions that I need more than what I put in the flashes, I take a generic wall charger (mine is literally an Olympus model that came with my C2000Z in 1999 or so). It only charges AA's, but that's what the flashes use of course.
You did say AAA but I'm prety sure you mean AA. I only use AAA's for my headband lamp and similar functions.
_____ Brian... a bicoastal Nikonian and Team Member
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