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CT scans of 1k lithium-ion batteries show quality risks in inexpensive cells

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287 points jonbruner | 1 comments | 24 Sep 25 19:29 UTC | HN request time: 0s | source
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jeffbee ◴[26 Sep 25 21:30 UTC] No.45391223[source]▶
I just got a new tenant in my rental house and this time I had to add a clause to the lease enumerating brands of lithium-ion batteries the tenant is allowed to keep on the premises. These things are basically grenades that you can buy for $2 on Temu. Stronger regulations needed.
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1. kragen ◴[27 Sep 25 06:23 UTC] No.45393580[source]▶
I found out today that the rechargeable batteries in my cordless landline phone are basically fake. They're NiMH AAAs, Highpower brand. I bought replacements because they were dying, and the replacements (rewraps by a domestic importer) weigh twice as much, 13 grams instead of 7, and purport to have 1000mAh capacity instead of the 300 advertised by the Highpower cells. Hmm, maybe that's why the phone wasn't working very well...

But those are (probably!) NiMH. No idea what brand of lions are in this cellphone, my laptop, my other laptop, my MicroPC, my other cellphone, etc.