nuckolls.bob(at)aeroelect
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 Posted: Mon Oct 31, 2016 3:55 pm Post subject: BatteryMinder not recommended for use in aircraft |
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At 04:33 PM 10/31/2016, you wrote:
| Quote: | --> AeroElectric-List message posted by: "donjohnston" <don(at)velocity-xl.com>
nuckolls.bob(at)aeroelect wrote:
>
> Do you still have the old Battery Minder? What model is/was it?
>
The old battery was a Gill G242S. The BatteryMinder was a 24041-AA-S1 24v battery Charger/Maintainer/Desulfator-Conditioner.
I replaced the battery with a Gill 7243-14. The tech rep at Gill said that my old BatteryMinder may not be sufficient for the new battery. I contacted VDC and they said the 24041-AA-S1 was not recommended for the higher capacity battery and said that I should upgrade to the 244CEC1-AA-S3. |
Hmmmmm . . . I've read/seen similar assertions
as to suitability to task . . . all of which were
mystifying. Indeed, if you're wanting to charge a
40 a.h. battery with a 0.75A wall-wart, it will
indeed take a long time . . . but just as a 0.75
amp load would take days to discharge the battery,
so too would a 0.75A charger take days to stuff the
energy back in. But if one has no sense of urgency
for demanding a fully charged battery, the time
to charge should be irrelevant.
Once the charger reaches the top-off cycle and
drops to a maintenance mode, then energy demands on
the maintainer are a tiny fraction of that available
for charging. As I mentioned earlier, it's micro-amps
in an RG battery.
If you still have your old maintainer, it would be
interesting to do a couple of cap-checks on your
battery and use the two chargers to replenish them
while recording the events on a data acquisition
system . . . but that takes a lot of time to
set up and run the experiment . . . so I guess
we're not going to know . . . soon . . .
Bob . . .
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