alkalines

Not mercury added to lower internal resistance like modern alkalines, but mercury itself was an electrode.

The LCD screen is a bit dim compared to when used with fresh 1.5 V alkalines.

In practice, toys are designed to opeerate off of 1V to 1.5V, because Alkalines vary _wildly_ in voltage during use.

At least if the alkalines do leak, they're in a carrier away from the MB.

What I don't get: I stopped using alkalines long ago, and have since settled for Eneloop rechargeable batteries.

GP is talking about lithium primary cells, which have even lower self-discharge than alkalines.

Yeah, most of the devices using 9V are smoke/CO detectors which only accept alkalines.

There are rechargeable alkalines that provide 1.5V but they are very unreliable and the rest of the rechargeable AA market is lower voltage.

But they better do because alkalines reach 1.2 V with >50% capacity left.

They don't leak like alkalines and probably less prone to oopsies than Li-ons.

I would have used the older Eneloops or current Fujitsus, but maybe rechargeable Duracells have better quality than their alkalines.

Three things prevent me from eliminating all alkalines: * smoke and CO detectors with low-battery voltage sensors calibrated to alkaline * some older electronics (e.g.

In comparison BBB consumes "210-460mA @5V", which would correspond to 1-3 hours on 2xAA alkalines (assuming ideal voltage converter).

I also had a Seitek Eco charger that could charge "normal" alkalines.