I've read about yet another way: to short circuit for a moment a "good"
battery with a depleted one. But I haven't tried that myself.
That odd battery that I've written about is probably near its death.
Judging from the refresh-discharge-charge cycle, it's capacity seems to
have shrunk enormously.
It might be the age of it, but not the total number of cycles that is
the culprit, as I haven't used this set too much.
Igor
Alan C Sat, 11 May 2019 21:49:00 -0700 wrote:
Yes, it works. A mate of mine who has a 'phone shop in Phalaborwa revives
'phone batteries by kick staring them using a car battery as crude power
pack!.
Alan C
On Sat, 11 May 2019, Igor PDML-StR wrote:
Some people may have done that before, - but just in case, - I thought I'd
share this tip.
I remember that some people on the list were using La Crosse ("smart")
charger for AA and AAA batteries. (I bought it originally for the
flash light, primarily, but then used for all other needs.)
I have the older model, the blue one, I believe BC-700, but from what I've
read, - all their models suffer from one problem:
When the battery is depleted so that its voltage is below some threshold (I
believe, it is 0.5 V), the charger displays "null", and refuses to charge
that battery.
The workaround I've found is to use a cheaper charger (I have a
Duracell-branded "fast charger") - to "jump-start" that battery.
So, you insert your batteries (whatever quantity is needed in that charger,
in my case, - it takes batteries by pairs), including
the "faulty" one, and charge it for a little bit.
E.g. today, I had one battery showing 0.4V, and after about a minute in that
"fast charger", it was ready to be charged in La Crosse.
(I've done that with other rechargeable batteries too, -not only with the
"strange" one that I am describing below.)
And since we are talking about rechargeable batteries, - I've found that
recently, my "Amazon Basics" branded rechargeable AA batteries started
behaving strangely: sometimes one (or maybe even two sometimes? I don't
remember for sure) battery becomes drained to that low level, like today, 0.4
V, while the other three are still at a reasonable level (today those 3 were
at about 1.28 V).
The curious thing today, that after just about a minute in the "fast
charger", the voltage of this battery went up to about 1.3 V, and after that
it was behaving as it was the same as the rest.
There could be two possibilities: either this battery significantly lost
its charging capacity, or it is just was "locked up" in this strange state of
a low voltage, and this "shock charging" helped to get it out of that.
The latter is very likely, as the pencil charpener where these 4 batteries
were, stopped working very suddenly, not gradually.
I haven't seen anything like this happening with any other brand of
rechargeable batteries.
In any case, I am using my La Crosse now to "refresh" this battery
(discharge-recharge cycle). That, hopefully, will show the true capacity of
the battery.
I hope this information could be helpful.
Cheers,
Igor
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