Hacker News Reader

> every AA, AAA, etc. are lithium ion rechargeable

Are you actually using Li-ion rechargeable AA and AAA cells? Those exist, but because they put out 3.7 volts, are pretty uncommon. Almost all household rechargeable AA and AAAs are nickle metal hydride, which is a much less volatile chemistry (and puts out 1.2 volts, making it mostly drop-in compatible with alkaline cells).

View on HN

There are plenty of lithium-ion rechargeable AA and AAA cells which put out 1.5v; they have an internal buck regulator that converts the 3.7v to the 1.5v that your device expects.

Interesting, never heard of that. Got any brand recommendations?

I've used the Pownergy batteries; I don't know how good they are relative to other brands but they work well enough. They charge over a micro-usb cable.

Panasonic eneloops?

Those are NiMH.

Reply on news.ycombinator.com