05/12/2026
Preparedness note…
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We use a lot of batteries in my household. And many devices that we rely on for safety in a pinch require batteries, but we often find ourselves with dead batteries from neglect, basic out of sight out of mind syndrome. And spares are kind of an issue because the shelf life is finite.
We have flashlights, smoke detectors, even hand-held radios. Some of these things are dual purpose for normal and emergency needs. Fuel transfer siphon pumps. Internal/external thermometer and humidity sensors. Plus it is nice to have things like a wireless mouse for the computer, and TV remotes. And did you know you can use a wireless mouse with most Smart TVs? It really helps with the search function.
So battery consumption becomes a cost worth looking at, as well as a preparedness issue. Rechargeable batteries have been a thing for a long time, but traditional chemical batteries had a sharp drop-off in recharge lifespan. And were significantly more expensive than one and done disposable batteries- we’re talking AA, AAA, C, and D cells, and 9 Volt. And then you needed a charger that plugs into the wall, and if you leave them in the charger too long, they corrode, or even burst. You could recharge regular batteries, but they would not take a really full charge, wouldn’t charge many times, and the risk of them getting too hot and causing fires, corroding, and exploding were even higher.
But the last couple years have seen some real game changers in battery technology. The battery advances have been amazing. There are NiMH batteries that are rechargeable 500 or more times. NIMH is Nickel-metal hydride. It’s a pretty safe tech. I started using it exclusively for my AA battery needs last year. It charges reasonably fast. Holds a decent charge in mAh. The Amazon Basics brand of NiMH batteries hold 2000 mAh compared to Duracell Premium at 2600mAh, and costs about 70% more for an 8 pack. But the NiMH battery has a lifetime of about 100,000 mAh with recharges. Of course, you also have to buy the battery charger, which may not last as long as the battery. So that makes the total cost for an 8 pack of batteries about 4 times the cost of premium carbon batteries for 384 times the delivered electricity.
I did note the Amazon basics brand is ever so slightly thicker than as standard AA. It fits snugly in some tubular battery compartments.
Here is a link to that product:
https://amzn.to/4toU9ox (AA)
And the charger:
https://amzn.to/42Pqtq5 (also works for trad rechargeable batteries).
https://amzn.to/3OZ4Tw1 (C Cells)
https://amzn.to/42qPfMZ (D cells)
https://amzn.to/4nrTz8b (AAA)
But after purchasing a couple 8 packs of those, and finding great success, I decide to try something that I have found to be even better: USB-C rechargeable smart batteries.
These are lithium batteries. They have up to 1600 charge cycles. They cost more than carbon batteries, and a little bit more than the NiMH batteries, but they have a longer recharge life cycle, and they charge more mAh (3,000 and up for some brands). Nearly double the NiMH charge and 25-40% more than premium carbon batteries (which means longer use per charge.) They discharge slower than carbon batteries- shelf life, not use. So they have a much longer ability to sit unused in a device or out of it, before needing to be replaced or recharged. This is really good for things like flashlights that you might need in an emergency and otherwise not use for months at a time.
**They also do not need a dedicated battery charger.**
I’ve experienced the same frustration you probably have over the years. Battery charger can’t be found, it gets corroded and needs to be replaced. You need a different charger for AA, AA, C and D cell. Or phones/MP3 players- howe many versions of proprietary charger did we go through, that didn’t work for anything else?!?
Then we got USB, USB-mini, USB-micro. Kind of a step up- it was smart charging tech. It was also a data connection. But PITA- you always needed up flipping the charging 3 or 4 times before getting it into the slot. Got damaged a lot.
USB-C solves some of the problems from all the various USB standards that went before. It’s higher available wattage (faster). USB-C devices can charge in either direction. So you can power a phone off your laptop, or plug a USB C wall charger into it and charge the computer. You can use the same wall charger from your computer to charge your phone, and it goes way faster with a 60-90w power wart from the wall. While still safely smart charging and monitoring the flow. USB-C is ambidextrous. Doesn’t matter which side is up, the shell is oval and fits and works either way. Less damage due to jamming it in wrong.
I have a long background in electronics and computing, and I think USB-C will last considerably longer than most of the previous charger/communication cable standards. Most laptops have already gone to this rather than round power plugs. Most phones, tablets, and a great many other devices are going to it as well- handheld two-way radios. Dog training collars. Wireless headphone charging. Ear bud caddies. Flashlights. Solar connections from portable panels- even modest-sized stationary installations.
So it seems like a reasonable investment in battery infrastructure if you use a lot of batteries or need portable power.
https://amzn.to/4fhOnla This one includes a (AA) battery recharging caddy, but each battery can also be recharged using a USB-C cable.
https://amzn.to/3R45ZHu I’ve been using these AA’s for 2-way GMRS radios around the farm. They last really well on a charge. The “octopus cable” provided with them charges them reasonably fast on a standard small wall-wart. They light up to show their charging status.
https://amzn.to/4npVR7H I got D-cells these for a big mag-lite (also LED ‘bulb’, so super bright AND energy efficient.) I also used these in a small fuel transfer pump similar to this one: https://amzn.to/42vkcj6 - a really nice piece of kit for emergencies and for people who have difficulty lugging and pouring from gas cans.)
https://www.amazon.com/Artman-Rechargeable-Batteries-Charging-Floodlight/dp/B0DNYN4Y7V/ C-cell
https://amzn.to/4nmscMG USB-C 9volt for those pesky chirping smoke detectors, charge once or twice a year, practically forever.
And of course, everyone has something like this phone-sized external battery pack with a solar charging function, and multiple USB power output options, right?
https://amzn.to/4u8kbO0
Final note: these smart charging batteries do have a flaw, but it’s really a wash compared to traditional batteries. If they COMPLETELY lose their charge, they cannot “negotiate” charge rates with the charger (it’s a safety feature to prevent overheating- lacking when recharging ‘dumb’ batteries) and will appear inert to it and therefore not charge. If you leave them sitting *in a discharged state* for a couple years, they probably will not take a charge again. But the same problem of shelf life exists with any battery.