On 18/04/2021 09:07, Andy Burns wrote:
Nick Odell wrote:

The 123 cells each weigh something between 13.8-14.0 grammes, the
little helicopter LiPo about 10.2g.

In the same way of measuring 18650 cells, a CR123A size is a 16340 cell.

I have a Fenix torch that takes a 26650 cell, it has a Fenix branded
cell 4800mAh (98g), according to my BT-C3100 charger, that capacity is
accurate.

Fenix sell various sized Li-ion cells, including a 16340 (19g), but only
with a capacity of 700mAh

https://www.torchdirect.co.uk/batteries-and-chargers.html

The mAh/g is better for the larger cells, obviously the metal casing is
dead weight, surface area to volume ratios and all that, which is one
advantage to LiPo with their flimsy "bags".

So I'd doubt any 16340 cell that claims 1500mAh capacity, if Fenix could
make one with double the capacity, why wouldn't they?

I suspect these are cheap chinese cells that actually have reject 150mAh
inside :-)

1500mAh is for a primary cell and even those weigh more.


These 123s say Li-ion and 3.7v on the sleeve.

Did I squint and read on the photos that they have a minimum voltage of
2.75V? That seems quite low for Li-ion.

I think that what is printed on the sleeve bears no resemblance to
reality at all.

Anyway total confusion because these are not the A123 Lifepo but LI-ION
in a C132 size,any if they really weigh 14g, there is no way that they
are 1500mAh.

I found some similar discontinued on amazon with rather bad reviews.


--
€œThe ultimate result of shielding men from the effects of folly is to
fill the world with fools.€�

Herbert Spencer