That’s as opposed to devices that just sip the juice slowly, like clocks. Devices that need lots of power quickly, like digital cameras, are called high-drain. eneloops are good, and I have a separate page where I cover my recommended brands (as well as which to avoid). If you need them today then many grocery stores stock them (as well as Radio Shack), but the prices are often higher and the capacities lower then what you can get from more careful shopping. I like Amazon for most goods, because the prices are low and they stock everything.

As a result, NiCD’s have all but disappeared. Around the turn of the century we were saved from this tyranny when NiMH’s became widely available, offering triple the capacity, and with non-hazardous materials, for about the same price. Until the late 1990’s, NiCd’s were the only option for rechargeable batteries in household sizes, but their capacity was terrible, and they contain toxic cadmium, which means they were supposed to be disposed of as hazardous waste, not in household trash. Make sure buy the Low Self-Discharge (LSD) version if you want long shelf-life. Many brands self-discharge to empty after just a few months of sitting around if you don’t use them.Low voltage of 1.2V means that cheap (unregulated) flashlights run dimmer, and devices needing 4+ batteries might run through batteries quickly, or not work at all.Very common, so it’s easy to find both batteries and chargers.Much larger capacity than NiCd’s, which they’ve replaced.

1.5 volt battery has 1.2 volts left