Charging batteries with a Gennie

Submitted: Sunday, Apr 22, 2007 at 10:13
ThreadID: 44591 Views:5502 Replies:7 FollowUps:46
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G'day all,

Firstly a bit of background info....

Previously we had a camper with a 12v/240v system and a couple of orbital batteries in it. We have sold it and now want to set a fridge up in the car for camping trips and the like. The fridge is an Engel 80L and we have recently purchased a Honda EU10i generator.

The car has a dual battery system which includes a Rotronics charger/isolator a Pirahna Battery Monitor in the cab all managing two Exide Orbital blue top batteries.

What we want to do is go camping as normal run the fridge off the batteries and have the gennie charge the aux when it gets too low (I imagine the cranking battery shouldn't get low due to the battery system).

I have read all kinds of threads over the past two days about the subject, things like 3 stage chargers etc.

What I wanted to know is weather it is ok to run the fridge off the battery & then just hook up the gen set to charge it back up to capacity, or are we better off running the fridge off the genny where possible?
I understand that a completely flat battery is likely to take about 7hrs to charge using the generator, so is it better to top it up every day?
Should we get some sort of regulator to ensure that the battery isn't overcharged or is it just as easy to use a multimeter? If you say regulator then please include any good brands you know of to consider.

We are likely to be driving the car most days for at least a short period of time - exploring the surrounds etc so it makes sense to have the fridge in there giving the batteries more chance at recharging. The gennie was purchased for the times when we don't drive each day & also due to it's versatility compared to something like a Christie. Thinking of when the kids get older and want to bring along unknown gadgets and also when we want to use the laptop etc. Other than that I don't generally take a kettle / toaster or such luxuries.

Any advice would be greatly appreciated. I'm pretty good at researching stuff but sometimes you get a lot of contradicting info and electronics tend to be confusing at the best of times.

And yeah I'm posting on behalf of both of us because hubby generally doesn't have the time to do so!

Cheers,

Kristina

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