Comment on Best portable Bluetooth speakers?
Zak@lemmy.world 1 year agoThey’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.
Aux@lemmy.world 1 year ago
Yeah, flashlights is an example of a niche hobby. Vaping is another hobby. Apart from that you won’t find bare cells anywhere else.
On-cell protection circuits are quite bad, protection should be inside the device. I personally never use protected cells, they’re useless. But that leads to people catching fire in their pants. Which happens quite often, sadly.
New EU rules mandate that it should be possible to replace batteries and ban things like glueing and soldering. But it doesn’t mean the batteries should be swappable. It will only make service workers’ life easier, not yours.
Zak@lemmy.world 1 year ago
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.