On 26/07/13 06:23, James wrote:
> Thanks Mathew,
>
> I'm reading the same thing from every user/operator manual I've been able to download off the net.
>
> It seems that complex multistage chargers do get confused and malfunction in the presence of other chargers/charging sources trying to also charge the same batteries.
That would be about it. And my particular charger seems to present a
parasitic load and stay 'powered up' when disconnected from the mains
too, hence the recommendation to disconnect it entirely if another
charging source was to be used.
>
> Sensing temperatures and voltages and the use of complex algorithms/logic seem to improve charger performance and battery life but at the cost of tolerating other hardware trying to do the same thing at the same time. Would that be a reasonable and fair summation?
I think so.
>
> So... How to get the various charge sources to play nice. I still want a holistic and smart single box solution however.
Back when I was converting my boat, some one did recommend a 'all in
one' to try. It really wasn't a multisource charger as such but an
all-in-one off grid power controller.
I think it was this device
<http://www.iwiss-solar.com/solar-inverter/WIS-N48-3000W-Solar-Inverter/>
It has solar, wind and 'generator' inputs, maintains a battery bank
(48v) and has 3000W of inverter output. Apparently the inverter can be
turned off.
It's probably not a cost effective solution if you have no need of a
3kW AC inverter as well. I imagine a fair chunk of the cost will be that
high output inverter.
I didn't investigate further as my boat is trailerable and sits in my
driveway most of the time. It's charged by shore power. I have a 'grid
tie' solar on the roof of my house. While solar generated electrons are
not actually charging my boat, I generate far more solar electricity in
a season than my boat uses.
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