I guess I always run the gear right off the batteries, so if the
batteries are that low the gear is already offline.
On 9/18/19 6:56 PM, Bill Prince wrote:
If the batteries are in a depleted state, they could drag down the
voltage until the power supply reaches its current limit.
If the voltage it gets dragged down to will run the equipment (say 40
or 45 volts), then there might be some sharing, but only if the
batteries don't drag the voltage down to below their operating range.
If the power supply does not have a current limit, then the power
supply could fail or who knows what.
So what Chuck stated is correct.
bp
<part15sbs{at}gmail{dot}com>
On 9/18/2019 6:30 PM, Robert wrote:
This confuses me.. Don't all devices basically get equal shot at
the current? i.e. the output voltage of the charger reflects the
voltage of the batteries at that time and the service devices run off
that voltage too. Unless the charger dies because it tries to output
more than it's actually capable of in continuous operation (Is that
what you mean by current limiting?). But don't most of these systems
basically float all boats on the same rising tide? Most battery
banks are capable of sinking way more current than most chargers can
output, so they charge at 1/10C instead of 1/4C? or 1/x and take a
very long time to charge and don't do a good job of clearing the
plates ( wet batteries ) ?
On 9/18/19 5:33 PM, Chuck McCown wrote:
If the batts are fully charged, then your charger/rectifier should
be putting out exactly what the load is needing (plus a tiny bit of
battery leakage current).
If your load picks up, your charger will carry it up to whatever
current limit the charger has.
If you have an extended outage, the batts might suck more than the
charger can put out once the power comes back on. So the best
systems have some form of current limiting to ensure the load gets
its current first and any extra can go to charging the batts.
*From:* Sterling Jacobson
*Sent:* Wednesday, September 18, 2019 1:19 PM
*To:* AnimalFarm Microwave Users Group
*Subject:* [AFMUG] DC Battery Charge/Load Question
I’m still learning this stuff.
If I have a 48v battery string and it’s being charged with 10A, and
my load is connected directly to it taking normally 2-7A, the load
will not receive that full 10A current meant to charge the
batteries, correct?
Or does it?
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