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Written by cwicseolfor on 2024-02-19 at 21:00

Is there still any use where disposable alkalines batteries are better than rechargeable?

I bought a pack of rechargeable AAs (Eneloop in the Sanyo days) in 2009 and I've been using them happily ever since, and some AAA (Eneloop post-Panasonic acquisition) sometime after that.

They take up a lot less space to store as most are in a device at any given time, they're easy to charge. Apparently the ecological costs break even by about fifty charges. Why are disposable batteries still a thing?

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Descendants

Written by Sarah Brown on 2024-02-19 at 21:34

@cwicseolfor Yes. Rechargeable have a lower voltage and some stuff may profoundly dislike that.

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Written by Tyler Smith on 2024-02-19 at 21:48

@cwicseolfor

For some of the field equipment I use (data loggers and trail cameras) I use, the manufacturer advises disposable batteries. I don't know why they prefer them over rechargeable, but presumably they have a good reason or they wouldn't bother?

I don't know what that reason is, though.

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Written by Ed Wiebe on 2024-02-20 at 00:28

@plantarum @cwicseolfor They more reliably do what they are supposed to do. I’m helping someone set up some powered hydrophones for use in the arctic. It’s just better to have a pile of new alkaline batteries. Voltage is better as the batteries drain, etc.

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Written by qwazix on 2024-02-20 at 02:24

@cwicseolfor in my experience NiMH AA's lose charge by themselves so for anything that you need to have ready at hand after long periods of disuse (like remotes or flashlights) alkalines are the only solution. That said, eneloops are probably way better than other brands. My mouse came with a single eneloop installed and it still holds a charge nearly a decade later. I never let it idle for long though.

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Written by cwicseolfor on 2024-02-20 at 02:30

@qwazix Yeah, the "official" line is they lose about 1% charge per day/ deplete in 3mo, though that hasn't quite held with mine - I can pull them out after being put away charged six months ago and they seem to still hold about half power. I replace the AAAs in my remote less than once a year (and I use the remote quite a lot.)

I just store flashlights next to the batteries - most of us are likely to default to the flash on our cell at first anyway, to get to the flashlight.

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