Just wondering what the consensus is here. I've been using lithiums since they became widely available years ago, and as my current stock runs out, I'll be replacing with NiMHs. I'm seeing as high as 2900Mah AAs available, with Duracell 2650s on sale locally. Seems there is a pretty big variance in chargers, as well - with some of the more techy ones claiming to improve the overall life of the battery. Right now, I'm looking at ordering a dozen Delkin 2900Mah batteries ($12.97/4) and a good charger with both a fast charge mode and a normal maintenance charge cycle (Maha MHC401FS). I may order two since they can only charge up to four simultaneously. Any problem using higher Mah batteries in D200/300/D3, SB800, etc?