Hi everyone. I'm still relatively new to most things electrical
on board my boat but I have been learning
really fast. I'm thinking of replacing my battery charger
in the near future and was looking for some help.
set up is a Sentry G120-3NL battery charger
(that I've had a tough time finding info on), a normal lead acid house batt, and an AGM
starting batt. The boat had some sort of battery combining diode when I bought it but it was so corroded that I took it out. I've just been manually switching the banks on or off as needed to keep them from draining each other and everything. Even with a diode/combiner/whatever, my understanding is that with the batteries each having a different chemistry one would be getting over-charged and one under-charged since I have to put them on the same charging
regime, correct? Chargers that can handle more than one bank would allow me to keep the batteries isolated from each other, getting rid of the need for the combiner, also correct?
So anyway, I'm looking at some new chargers and reading through some online resources and Nigel Calder's books
and I think I know what I'm looking for. I'm also trying to keep in mind a future upgrade to a LiFePo house battery.
I need a charger with independent sensors and charging
regimes for each battery (it's been hard to tell sometimes from online descriptions whether or not they have this). I'd also like it to be able to intelligently share the load between batteries (ie a 20 amp charger that will give 10 to each until one is full, then the full 20 to the other). And it will be run off of a generator
when away from the dock
so it has to be able to handle the noisy output from the generator
. Then of course whatever other features to make it an all around good charger.
I found this charger: Xantrex / Schneider TRUECharge2 40A Battery Charger
that seems to fit the bill. My thought being that in the future I could add the remote
panel: Xantrex / Schneider TRUECharge2 Remote Panel
which would give me more control to adjust the charging regime for a LiFePo bank, plus the ability to piggy back another charger and take advantage of the lithium's high charge acceptance.
Then there's also this one: ProMariner ProNautic 1240P Digital Performance Battery Charger
and this one: MDP Electronics Premium Battery Charger
which both say they have factory settings for lithium batteries.
Anyway, those are my thoughts so far and I'm looking for any other suggestions or general guidance. Thanks!