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Best portable Bluetooth speakers?
(lemmy.world)
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this post was submitted on 08 Aug 2023
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They're very common in flashlights, including mainstream brands based in the USA (Streamlight, Surefire) and in a bunch of stuff from the Alibaba to Amazon pipeline. The former uses cells with added protection circuits, and such models will accept generic third-party cells. I'm a bit surprised I don't hear about the latter exploding on a regular basis, but I have not.
Li-ion cells with protection circuits are safe enough for the average adult to handle without any special instruction; the risks are no different from the removable proprietary Li-ion battery packs that are common in power tools, and used to be common in laptops. There isn't a safety reason preventing their use in other electronics like Bluetooth speakers, though the business incentive to produce a more disposable product is obvious. New EU rules mandate user-replaceable batteries in the future, though I imagine manufacturers will find ways to make it proprietary and expensive if they can.
Flashlights are certainly a hobby for some of us, but they're also a common tool most people have an occasional use for. Standardized, field-replaceable Li-ion batteries are common in flashlights targeted at a non-enthusiast market.
I agree that devices should not over-discharge or over-charge cells, but the example you gave was people putting batteries in their pockets, presumably with metallic items like coins and keys that can cause short circuits. On-cell protection circuits handle that situation well enough; I recommend carrying batteries in plastic cases, but I've never heard of a manufacturer getting sued over a protected cell.
I often use unprotected cells myself, but I'm a hobbyist.
The new rules say that batteries should be removable and replaceable by the end-user. They don't seem to encourage standardization of battery types though, so they could still be proprietary and ridiculously priced.