"Bob Minchin" wrote in message ...
I have just purchased a commercial device from the far east which is powered by two CR2032 lithium coin cells connected in
parallel.

I can see no positive reason for this at all and some negative ones

The operating current is 60uA and 16uA on standby which it reverts to after 5mins in activity.
I have sometimes seen these cells paralleled up to meet a peak current requirement but there is nothing like that sort of current
being drawn by a couple of chips and a LCD display

Each cell is rated at 230mAh which should give around 3800 hours normal operation and 14000 in standby so well over a year with
mixed duty cycle.

SO why on earth are there two cells fitted??


Any clues?

Bob

PS it is a digital readout scale - a bit like the cheapo verniers but a lot longer.

Does it have any settings or calibration data stored in volatile memory?

Perhaps the idea is you replace the cells one at a time before either
is exhausted.


--
Graham.

%Profound_observation%