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post #1 of 4 Old 04-02-2006 Thread Starter
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Battery Charger Opinions?

Trying to choose between two chargers that are on sale. They are both 10Amp two-bank. I know it is not a whole lot of charging power but our charging to use ratio is pretty good. I just need a new charger I can leave connected without fear of cookign batteries.

- XANTREX Truecharge 10Tb Battery Charger

- Guest Waterproof Series Battery Charger 10a
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post #2 of 4 Old 04-02-2006
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I've got the Guest model that puts 5 amps into each of two banks on my boat (each charging a group 24), and a Guest 5 amp on my camper, charging a group 27.

They charge batteries OK, but don't like to carry any real shore power load. If we have any amount of shore power load going, the red and green lights of the charger blink alternately. The Guest manual doesn't mention this, but I presume it's overheating. If you turn it off for a while, and turn off the DC loads, it works normally. Consequently, we tend to leave the charger shut off when we're on board and using the 12 volt lights, then turn the charger back on at night to recharge.

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post #3 of 4 Old 04-03-2006
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Xantrex is by far a superior charger over anything built by Guest. You didn't state your onboard demands, but I would encourage you to upgrade to a Truecharge 20 amp for your 2-bank system. I have a Xantrex Truecharge 40+ for (2) 4D banks, which provides us with great dockside security. The Xantrex 3-stage automatic system keeps the batteries well charged without fear of fried cells.

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post #4 of 4 Old 04-03-2006
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I agree the Xantrex is the way to go. I have used their products for 10 years in both the Marine industry and the IT Industry (I am an IT consultant). They make an outstanding product. I currently have the True Charge 3 Bank 40Amp unit in my boat with the remote panel. It is outstanding. It is fully automatic and you can have it on and powering the engine battery during a start. Its remote panel is well worth purchasing as it will tell you what is going on with your batteries and the level of charge being supplied to each.
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