Friday, March 20, 2026

Too many lithium gadgets in the house

 This is funny.  There's a one in a million chance that a random lithium battery will explode randomly.  I demonstrated this recently by hitting old phones with a 10 pound steel hammer.  It has the power of an old-school road flare.  Do not store these batteries with your gas-hoarding cansisters.  (Seriously, the last gas shock had my crazy neighbour storing lots of gas in his garage.)

Always store them in a manner that doesn't instantly explode, and have lots of smoke detectors.  Mine all went off when the phone exploded.

But I went wrong with a little gadget for vacuum sealing small bags.  It was the size of a small flashlight, and I threw it with the pots and pans under the induction cooktop.  Lithium batteries discharge at a few percent per month, and this one went down to the level where the on-off button went unstable,  This was not a physical switch, but a standard latch-circuit button.

So, suddenly there is a buzzing sound under the induction cooktop.  OMG that thing is expensive!  I thought it was a fan going nuts.  Amazingly, I turned the power on and off to reset it, and the noise stopped.  Then later it started again.  I turned off all the power to the kitchen.  Still going!

We started emptying the shelves to see the cooktop better from underneath.  As my wife was carrying things away, I tracked the noise source leaving the kitchen.  Looked at the stuff, and there is was, making noise.  I am discharging it outside, and calling it a fire hazard, for sensitive family reasons.


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