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Posted to uk.d-i-y,alt.home.repair
Steven Watkins Steven Watkins is offline
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Default Li-Ion batteries

On Fri, 02 Nov 2018 22:12:24 -0000, Clive Arthur wrote:

On 02/11/2018 21:53, Steven Watkins wrote:
On Fri, 02 Nov 2018 21:34:53 -0000, Clive Arthur
wrote:

On 02/11/2018 18:40, Steven Watkins wrote:
On Fri, 02 Nov 2018 16:53:15 -0000, Clive Arthur
wrote:

On 02/11/2018 14:58, Steven Watkins wrote:

snipped

I purchased some torches with 14500s claimed to be 2400mAh which I
didn't believe. I doubt that they were even close to 850/900mAh as
fully
charged they didn't last long in the torch. Replacement 900mAh
batteries
lasted much longer.

I have some GTL batteries (also called GIF) (Chinese ****) that say
2500. I tested them (bulb, ammeter) and got 500. Official tests I've
found on websites agree. Got them free, I moaned at the seller and
got
all the money back.

Decent makes like Efest, Sony, Sanyo are all quoted as 850 and reviews
say you really get that. But 850 is pitiful, as NiMH gives 2700.

About the same energy, given that the lithium cells are about three
times the voltage of the NiMH.

But if you consider a Panasonic 18500, at 3Ah and 3.7V, it's twice the
energy per volume. They just don't seem to get the higher charge
density in the smaller AA size.

ITYM "Thanks, I'd overlooked that, and 'pitiful' was clearly wrong".


No, by pitiful I meant "no better than the preceding technology".


OK, thanks. I've updated my dictionaries with that latest definition,
you silly ****[1].

[1] An intelligent and humble person (2018).


The point of LiIon was to supercede / improve on preceding technology. In the case of AA size it failed miserably, as it exceeded capacity by 0%.