211–220 of 343 posts
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Fun fact: in most of Germany this would have been a crime with a penalty of up to tens of thousands in EUR depending on the exact species.
sounds more like a repugnant fact to me
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My Newton MessagePad 2100 used 4 AA batteries, the Palm m105 used 2 AAA batteries, so this used to be possible with monochrome displays. But: Watt hours (Wh) are quite low for these NiMH rechargebles. I think what would be preferable would be a standardised size of phone-fitting Li-Ion batteries that manufacturers are required to use. (I highly doubt that this will ever happen, though.)
pretty sure >10 years ago I had an array of aftermarket Li-Ion batteries for the Samsung Galaxy S2, which were able to be quickly swapped in and out when needed. there were same sized ones with slightly higher capacity than the one the phone came with, then there were double thickness ones with double the capacity that came with their own replacement battery cover. think they went up to 5000mAh. there were the usual…
https://en.wikipedia.org/wiki/Motorola_MicroTAC
had a battery which was the actual "back cover" (it was connected to the phone via sliding), and everyone had at least two batteries, there were all kind of slim to bulkier sizes.
Some of them (medium sized) simply contained 5 (Ni-Cd or Ni-Mh) AAA batteries.
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So sell compatible size higher density batteries. Actual disposable batteries (remember those?) have improved dramatically over the decades but you can still put a brand new AA battery loaded with the latest 2022 tech into a remote control from the 50s and expect it to work.
>Actual disposable batteries they have the same form factor, and they have not changed much over decades in capability and certainly not size. Phone batteries do not do this - they are designed to fit in a certain (few) phones, and market change on phone sizes mean there is no standard size. When phone batteries get higher density, then it's likely a readeoff between adding more other features and keeping the same ba…
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> Phone batteries do not do this - they are designed to fit in a certain (few) phones, and market change on phone sizes mean there is no standard size. It would be nice if that wasn't the case. I've seen power tools from certain companies adopt the same battery type across multiple of their tools, so that they are interchangeable. I can imagine something like that happening industry-wide with a bit more lawmaking, li…
> with a bit more lawmaking No thanks. Things like this almost always have unintended consequences.
In my efforts to find the perfect rugged phone, I honestly feeling like I am chasing butterflies.
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A silly question then: why there are no AA/AAA rechargeable batteries that are Li-Ion/Li-Poly/whatever chemistry is used in smartphone batteries? Seems like a no-brainer to me: use the apparently better, more advanced, more energy-dense chemistry, but in a standard AA/AAA format. Pack whatever control electronics you need for safety too. Not only my remote controls would have half a decade of battery life, an iPhone…
The Li chemistry produces much higher voltages and so would require step down circuitry to function as a direct replacement for AA/AAA. If you are talking about form factor, then there are a lot of similar size or smaller cells available.
What's the minimum voltage we could get without intervention? I'm not well-versed in batteries, but I do recall that a typical Li-Ion cell has 3.7V on output, which might be tricky to fit into one AA/AAA, but isn't that far from two AA/AAAs.
While there's no standard way for devices to accept multiple AA/AAAs, to a first approximation, a Li-Ion cell reformatted into a shape of two AAs with ~1-2mm "space" between them, would fit all my remotes and a third of my children's toys - so I could see a "Li-Ion double AA" working as a product, provided it could shed that 0.7V somewhere. The biggest problem would be devices accepting odd number of batteries.
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A silly question then: why there are no AA/AAA rechargeable batteries that are Li-Ion/Li-Poly/whatever chemistry is used in smartphone batteries? Seems like a no-brainer to me: use the apparently better, more advanced, more energy-dense chemistry, but in a standard AA/AAA format. Pack whatever control electronics you need for safety too. Not only my remote controls would have half a decade of battery life, an iPhone…
The catch is that Li-Ion rechargeable batteries have much higher self-discharge rate than alkaline AA/AAAs, so you could not use them in remote controls anyway. For powering iPhones, you can buy a few 18650 with a type-C/lightning case from AliExpress, but most people will prefer just buying a powerbank.
How does that compare with NiMh, or whichever is the current standard chemistry for rechargeable AA/AAAs? I may be misguided here, but I generally avoid regular single-use AA/AAAs, as it feels like a complete waste of energy - even if properly disposed of, I don't imagine they get recharged by some factory and put back on the market, so all the embodied energy that went into making them is lost.
> For powering iPhones, you can buy a few 18650 with a type-C/lightning case from AliExpress, but most people will prefer just buying a powerbank.
At least some of the power banks I've disassembled in the past were just 18650s with a case, USB port and charging circuitry, so I can't blame people for buying it already pre-assembled.
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>Actual disposable batteries they have the same form factor, and they have not changed much over decades in capability and certainly not size. Phone batteries do not do this - they are designed to fit in a certain (few) phones, and market change on phone sizes mean there is no standard size. When phone batteries get higher density, then it's likely a readeoff between adding more other features and keeping the same ba…
A silly question then: why there are no AA/AAA rechargeable batteries that are Li-Ion/Li-Poly/whatever chemistry is used in smartphone batteries? Seems like a no-brainer to me: use the apparently better, more advanced, more energy-dense chemistry, but in a standard AA/AAA format. Pack whatever control electronics you need for safety too. Not only my remote controls would have half a decade of battery life, an iPhone…
Earlier quoted context omitted.
A silly question then: why there are no AA/AAA rechargeable batteries that are Li-Ion/Li-Poly/whatever chemistry is used in smartphone batteries? Seems like a no-brainer to me: use the apparently better, more advanced, more energy-dense chemistry, but in a standard AA/AAA format. Pack whatever control electronics you need for safety too. Not only my remote controls would have half a decade of battery life, an iPhone…
Regular single-use alkaline AA batteries are more energy dense than comparable rechargeable lithium based ones (up to 3000mAh for a single AA vs 3200mAh for iPhone 14 Pro). They're also safer and have lower self-discharge.
The lack of a replacable battery is infuriating because it's planned obselescence of a FLIR device. I got one of the first CAT s60 phones when they came out and tolerated all the android spyware on it because I really liked having a properly ruggedized phone. Got about 4 years out of it. The flir camera I would say I used most often at night for finding my dogs poop to pick up on neighbours lawns in the dark, but I u…
I'm actually considering buying a IR camera for testing insulation (I have a contractor working in my apartment and due to various instance of clear fraud from him I have no confidence or trust in him anymore). Would a HTI HT-102 be enough or is it better to get a better sensor?
Cell phone attachment cameras have compatibility problems. For example, find reviews for Flir One Pro. If the cell cannot find the camera, then it's pretty useless.