I would like to take issue with a reader's comment recommending against lithium-ion batteries for digital cameras ["Quit Fixating on Those Megapixels," Letters, Feb. 5]. In my experience, rechargeable lithium-ion batteries have the highest shooting capacity and longest shelf-life when your camera is in the closet.
That said, the various batteries used in digital cameras are all satisfactory. Proprietary batteries suffer from the disadvantage that they can't be replaced if they run out while you are shooting, so always have two. I have had no problem recharging batteries on trips; almost all chargers are universal and work at all voltages; all you need to use them in foreign countries is a cheap adapter plug.