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Old 08-06-2018, 10:49   #1
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Boat: Lagoon 450
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Relacement for Cristec battery charger

We have two Cristec chargers on our L450, a 60A and a 40A. The 40A stopped working, and we had a Cristec agent look at it and it required a new control board. A repair would cost about half the price of a brand new charger.

My questions as follows:
Do I repair - or am I potentially throwing good money after bad, and rather spend double and replace?

If I buy a new charger:
Do I buy another Cristec 40A? Or is there another manufacturer to consider? And if so, is it ok to combine different makes of charger?
Any benefit to upgrading to a 60A (so then have 2x 60A units)?

Our battery bank is 6x 140amp Gels (which themselves are on the way out, but that's another story )

Thanks!
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Old 08-06-2018, 12:25   #2
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Re: Relacement for Cristec battery charger

Quote:
Originally Posted by Millerslocal View Post
We have two Cristec chargers on our L450, a 60A and a 40A. The 40A stopped working, and we had a Cristec agent look at it and it required a new control board. A repair would cost about half the price of a brand new charger.

My questions as follows:
Do I repair - or am I potentially throwing good money after bad, and rather spend double and replace?

If I buy a new charger:
Do I buy another Cristec 40A? Or is there another manufacturer to consider? And if so, is it ok to combine different makes of charger?
Any benefit to upgrading to a 60A (so then have 2x 60A units)?

Our battery bank is 6x 140amp Gels (which themselves are on the way out, but that's another story )

Thanks!
you can take any brand as long as the charger has either a GEL program or is programmable. Some good brands are Victron, Mastervolt etc. If you are thinking about upgrades of your inverter, there are combi units like the quattro or multiplus, from victron, they provide a great charger up to 220A from the 5000VA inverter.

But of course you can stay with cristek too.
It depends on your plans for the life after your GEL bank ceases...
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Old 08-06-2018, 13:45   #3
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Relacement for Cristec battery charger

Look hard at a Sterling Pro charge ultra, 60 amp.
I would not buy any charger that wasn’t fully programmable myself, just too many good ones are to accept a preset program that may or may not be correct.

You may also consider an inverter / Charger combo
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Old 09-06-2018, 02:24   #4
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Re: Relacement for Cristec battery charger

I was trying to figure why the factory put a 40 and 60 instead of two 60. It could be the reason they have a 40 and 60 amp is to keep the AC input current below 15Amp 115 V shore power circuit and or to balance the load on the generator if it is being fully loaded (with for example 4 Aircon units + water heater + + + ), just a guess though.
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Old 09-06-2018, 03:31   #5
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Re: Relacement for Cristec battery charger

I spent a lot of time, and money, 5 years ago trying to make the system charge better. Ended up with a Sterling Alternator to Battery Charger. Didn't really get a much of a result and I tolerate it and love the solar now. See attached L450 system and how I changed my one.
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File Type: pdf B2A STERLING POWER SYSTEM Schematic-Model.pdf (46.5 KB, 42 views)
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