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techntrek View Drop Down
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Joined: 29 Jul 2009
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Posts: 9059 		Direct Link To This Post Topic: Battery charging?
    Posted: 22 Jun 2015 at 5:57pm
Don't worry about the plywood, that is an old myth.  True back in the day but not with modern battery cases.

You can get 12 volt batteries that are around 100 amp hour, too.  The two biggest advantages are the series wiring (as mentioned) and usually you can get much better - and true - deep cycle batteries that are 6 volts.  
Doug ~ '10 171 (2009-2015) ~ 2008 Salem ~ Pod instruction manual
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Posts: 190 		Direct Link To This Post Posted: 22 Jun 2015 at 9:12pm
Dang... I've been putting batteries on plywood all this time for nothing?  Or am I showing my age again?
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techntrek View Drop Down
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Posts: 9059 		Direct Link To This Post Posted: 22 Jun 2015 at 10:08pm
Old style rubber cases would leak a little fluid and so ground themselves if they were right on the floor.  No need with the plastic cases.
Doug ~ '10 171 (2009-2015) ~ 2008 Salem ~ Pod instruction manual
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Posts: 1042 		Direct Link To This Post Posted: 23 Jun 2015 at 9:47am
what is best recommended brand/style etc for 6v batteries; seems to be alot out there.  hogone
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Posts: 1676 		Direct Link To This Post Posted: 23 Jun 2015 at 10:18am
Although Trojan are very popular, I chose to go this route and have been very happy:


fred
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Posts: 1797 		Direct Link To This Post Posted: 23 Jun 2015 at 10:55am
The Trojan T-105 is the gold standard. However, the Interstate GC2-XHD is also very good and may be more available. Sam's Club sells a couple of batteries at lower cost, but I'm skeptical. You get what you pay for.
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Posts: 1042 		Direct Link To This Post Posted: 23 Jun 2015 at 12:29pm
lets keep the debate going..................im going to buy this week!!!!   sorry, just want to get the biggest bang for the buck and quality!!   hogone 
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Posts: 1797 		Direct Link To This Post Posted: 23 Jun 2015 at 1:25pm
As you know biggest bang and quality don't always coincide. Ref. China Bombs.
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Posts: 190 		Direct Link To This Post Posted: 23 Jun 2015 at 6:30pm
Back to my original question.  I left the pod plugged in on a 120vac 15amp circuit for two days and then disconnected external power.  Interior LED battery/tank meter showed 4 LEDs (full), not sure how reliable that is.  Then I pulled the positive lead from the battery and tucked the cable in the back of the box.  Will let it sit for a few days, reconnect the cable, and check to see if the charge holds.
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techntrek View Drop Down
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Posts: 9059 		Direct Link To This Post Posted: 23 Jun 2015 at 8:23pm
I'd go for the cheapest deep cycle battery, you just won't get your money out of the more expensive stuff unless you boondock all the time.

John, don't rely on the LED meter for anything other than the fresh water tank and the gray tank.  You need to take the resting voltage (3 hours disconnected) of the battery to figure out its true SOC.  Look up the Wind Sun Battery FAQ for a voltage chart and lots of other good info.
Doug ~ '10 171 (2009-2015) ~ 2008 Salem ~ Pod instruction manual
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