General > General Technical Chat

Ban of non-rechargeable batteries

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eugenenine:

--- Quote from: M0HZH on June 30, 2020, 04:32:16 pm ---There are no rechargeables with a lifetime of 20 years of continuous duty

--- End quote ---

I have some Sanyo 1650mAH NiMH from 1999 (before Eneloop) that can still be used.  I gave them to my son once I had enough Eneloops and he uses in his Lego motor power box.  Some of my Eneloops are 1 years old now and still going.

tom66:
My father has a rechargeable shaver with a 25 year old NiMH battery pack in it (3 x AAA in a sealed package), that I just replaced last month for him as it was running a little short after a full charge.

Not bad at all!

eugenenine:

--- Quote from: edy on July 01, 2020, 06:10:59 pm --- NiCd are still used in a lot of devices. They are quite resilient, usually sit on a trickle-charger 24-7 and ready for use when needed.

--- End quote ---

Trickle chargers though were a big reason for NiCad's demise.  While they are/were the most tolerant of trickle charging it does tend to slow cook them to death.  This is why Nicad's lasted over 10 years in my old Makita drill but NiCads in cordless phones and solar lights only lasted a couple years, the Makita drill was a smart charger that would stop charging when the battery was 'full' but the others would trickle charge them to death.

CatalinaWOW:
I have some 20+ year old NiCads that are still usable and some other chemistries of similar age also usable.  But they are the exceptions, not the rule.  Just as there are incandescent bulbs still burning after many decades of use.

The reasons for survival are multiple and at least partly unknown to me.  Initial quality.  Careful storage.  Benign usage.  Careful charging.  ..... 

It would be unreasonable to expect all of these things to line up for the general population of batteries.  Some Lithium chemistries are more robust to the ills of battery usage, but I still think it is optimistic to assume 20 year life for the bulk of the population.

eugenenine:

--- Quote from: Nusa on July 03, 2020, 12:30:58 pm ---
Buggy whips are still current technology for those that deal with horse teams.

--- End quote ---

And used consensually in the bedroom for certain lifestyles  :-DD

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