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Old 10-10-2012, 09:16 AM   #11
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Originally Posted by Arefbee View Post
It did not seem odd to me relative to other deep cycle applications I've used, but I will have to check the charger now.
I suspect the black battery box and some direct sun exposure helps the evaporation. The water was evenly low in each cell, so the case is OK; no sign of loss in the container.
The sun exposure angle is a good one. My camper is shaded and the batteries are inside the front compartment of my 5th wheel.
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Old 10-10-2012, 05:13 PM   #12
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Thank's for the info.

I guess I don't feel too bad since my batteries read 13.44 volts immediately after removing the charger with the batt disconnect switch off so their was little draw. The "wait 24 hours" is a good idea to give the batteries time to normalize.

The comment about water usage is surprising to me. I spent 30 years in the warehouse business where we used 48 volt electric lift trucks exclusively. Ran the batteries until the meter said LOW, changed, cooled, charged and watered, and cooled before placing in the next truck. We used lots of distilled water.

I have a 48 volt (6 8 volt batteries) golf cart and I water it about twice per summer and once before winter storage. Gets a lot more use than just golf but still took about 3 quarts in the batteries third year of life.

My coach has two 12 volt batteries under the steps. I had them installed by CW in Dec. 2010 so they are less than two years old. Somehow last summer, my converter boiled them dry so I have been watching carefully since then and NOT using the converter while in storage. I use my old faithful 25 year old portable charger. I am definitely going to get a battery tender and use it while in storage and hook it up to my car that's left in the storage while we winter in Florida.

Because the batteries are so difficult to access, I have installed a remote watering system. I haven't watered the batteries since the initial watering after installation in Sept. time will tell.

Herk, you must be a battery wizard. You always seem to have the information we need.

Thanks a bunch. I also saved the charts to my I pad...

Bill
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Old 10-10-2012, 08:36 PM   #13
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Herk, you must be a battery wizard. You always seem to have the information we need.

Thanks a bunch. I also saved the charts to my I pad...

Bill
Bill,

Everything I know, I learned here and in the AF (some Physics from college I suppose too).

As to the water usage, I can only tell you that charging with my ship-n-shore fast charge it does use water (not much at all) but with the multi-stage converter doing the charging I use no water all winter.

I can only surmise your fast charger is boiling the crap out of your depleted golf cart batteries to get them packed with electrons as fast as possible.

The charging pattern used by our multi-stage converters looks more like the graph below with many steps from initial charge to full charge. The more depleted the battery the faster it will take a charge and the more heat is generated in the electrolyte.

To get the maximum life out of your investment you need to recharge it before it falls much below 50% capacity.
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Old 10-22-2012, 05:20 PM   #14
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If I have two coach batteries in my Georgetown, that would be 2 -12 volt batteries correct.
If fully charged they are expected to produce 12 volts nominally for longer than a single 12 volt ,yes???
I doublt they are 6 volts.
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Old 10-22-2012, 06:46 PM   #15
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If I have two coach batteries in my Georgetown, that would be 2 -12 volt batteries correct.
If fully charged they are expected to produce 12 volts nominally for longer than a single 12 volt ,yes???
I doublt they are 6 volts.
Without a picture of how they are connected, I have no idea.
If they are 12 volts each then the capacity of the two are added.
If they are 6 volts each then the voltage is doubled but the capacity is the same as the smallest single six volt battery.
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