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Old 06-30-2015, 09:46 PM   #11
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fot3...The battery choice discussion above is fine if you dry camp a lot. (Though I would never do a single pair of 6V since if one fails you are dead in the water. 6V's are great if you have room for 4...otherwise stick with 12V.

If you don't boondock much...then all the talk about good batteries and 6V v. 12V is largely moot. Just get a single true deep cycle 12V if that is all you have now.

The larger concern is HOW your present battery got to 2V.
If it was sheer negligence...then no big deal. Live and learn.
But if your converter killed it...then it may be time for a new modern one since they weren't using them in 2002. The progressive brand converters or the Iotas ...with smart charging would be good choices and you want to size them at 20-30% of the amp hours in your battery bank for best results.

To test your converter once you have your new battery installed...take a reading at the battery terminals with a voltmeter...BEFORE plugging in the power cord to anything. If you are seeing from 12.4 to 12.7 volts...turn a few 12V lights etc. on for a while until the voltage drops below 12.4...but don't let it go into the 11V range...stay above 12.
NOW plug in and take a measurment with the voltmeter at the battery terminal after about 5 minutes. You should see voltage in the 14.0-14.5 range which is coming from the converter. If you see more....immediately UNPLUG... and replace the converter.
If you see nothing other than the 12V you saw before...then check fuses and breakers as the converter is not working...replace fuses and try again...or replace converter if it is just dead. Less than 14V but over 13V means everything is working but you aren't in bulk charging mode...not a big deal if you don't boondock as you will eventually get charged up.
good luck

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Old 06-30-2015, 10:00 PM   #12
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They are dead time for new ones and make sure your converter is working properly. Keep up with the water level in it if you buy wet cell battery. It's ok we have all neglected a battery sometime in our lives.

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Old 07-01-2015, 03:47 AM   #13
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Originally Posted by Herk7769 View Post
Yep! What the Captain meant to say!
You guys are correct, my bad. Fingers got ahead of my head. Thanks for the catch.
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Old 07-01-2015, 10:01 PM   #14
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Thanks for all your help, I'm going to just replace but was curious because it did seem too hot. I do usually stay at a campground so we are always connected to shoreline so no boondocking any time soon.
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Old 07-02-2015, 06:51 AM   #15
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Single stage converters (the power supply and battery charger) do a poor job of keeping your battery happy, but if you rarely use your battery, who cares. A three stage converter would be much better at maintaining and charging your battery at correct voltage levels.

If you never use your battery, you can even disconnect it and rely solely on shore power.

Check your battery water level a couple times a year. (only use distilled water). If your not plugged into shore power for any length of time (a few weeks or longer, consider disconnecting the battery if you don't have a disconnect switch. Try to plan ahead and disconnect the battery when its fully charged.

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