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Old 01-29-2014, 06:44 PM   #1
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My battery, water level and charger - it's surprising what I don't know

Ok, since my battery was so dead last week that it wouldn't run my landing gear, I brought it home to charge it up.

Here is my Walmart special battery charger:
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I bought this back when I had my pop-up. I didn't know what I was doing then an still don't! I normally don't pull my battery out and generally let my converter charge it and disconnect to keep it from being depleted.

I first checked my water levels (YouTube educated!). I think they're ok:
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I think they look OK and not frozen (my book told me not to charge a frozen battery, so I was checking).

Finally, here's my battery. Can anyone tell me anything about it? It doesn't seem to have amp-hours listed. Being a starting + deep cycle battery, it doesn't seem best suited for an RV, but we so rarely use battery power only, I think it's OK for now.

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Old 01-29-2014, 07:43 PM   #2
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Here is some info on Deka Marine Master.

http://www.dekabatteries.com/assets/base/0181.pdf

Also I find this to be a good site for battery info

http://www.batterystuff.com/kb/artic...-basics.html#4
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Old 01-29-2014, 07:56 PM   #3
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If the battery is 5 years old or older I'd replace it with a true deep cycle battery.
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Old 01-29-2014, 08:18 PM   #4
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Quote:
Originally Posted by Oakman View Post
If the battery is 5 years old or older I'd replace it with a true deep cycle battery.

It's the battery from the dealer. Should be about 2 years old. But it sure isn't well marked on the battery:
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Old 01-29-2014, 08:28 PM   #5
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If you are looking for a built date, then look underneath the battery for two stamped year and month...the top one is usually for when it was put in service by the dealership.
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Old 01-29-2014, 09:06 PM   #6
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Quote:
Originally Posted by fonzie View Post
If you are looking for a built date, then look underneath the battery for two stamped year and month...the top one is usually for when it was put in service by the dealership.

That makes sense. I can't imagine my dealer taking the time to mark the top. I'll look after it charges for a while.
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Old 01-29-2014, 09:07 PM   #7
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I know scale is hard to see- but does the water level look right?
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Old 01-29-2014, 09:30 PM   #8
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Yes water level is OK. It should cover plates by at least 1/4 inch electrolyte.
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Old 01-29-2014, 09:33 PM   #9
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Quote:
Originally Posted by ependydad View Post
I know scale is hard to see- but does the water level look right?
Kind of hard to see, but looks good with the water covering the plates. Ideally, the water level should be no higher than just below or to the bottom of the tubes, but the main thing is to always have the plates covered.

Remember, though, only use distilled water.
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Old 01-29-2014, 10:21 PM   #10
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Here is your batter specs:

Battery Specifications:

Cold Cranking Amps at 0F : 550amps
Marine Cranking Amps at 32F : 685amps
Minutes at 25 Amp: 120min.
10-3/4" L x 6-3/4" W x 9-3/8" H

This battery should provide you with a 2.5 amp draw for 20 hours or 25 amps for 2 hours. This should be a 50 Amp/hr battery.

I think I am correct.

NOT TO GOOD!
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