Does anyone use rechargeable lithium batteries in their digital cameras, etc.? The regular charger I saw yesterday is nice and compact and plugs directly into the wall, but the package didn't say how long it took for the batteries to charge. I'd go for the 15-minute charger, but it's huge -- about 4x the size, and I want to take it on vacation, so I don't want to lug that whole big thing. But I don't know what the charge time tradeoff is vs. the compact one, so I don't know if the extra bulk is worth it. EDIT: I should have said rechargeable 2200 mAhs. Not lithium.