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Old 10-08-2011, 04:00 PM   #1
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Adding second battery

Got a HW277 and trying to add a second battery. Got everything in but when hooked up, got three "pops" from the inverter. Everything works except for the fridge. Powers up for a second then shuts down. Put it all back to one battery and everything is fine. Any ideas?
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Old 10-08-2011, 04:16 PM   #2
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did you add an inverter, cause, as far as i know, A-frames and popups only come with a converter.
my HTT only came with a converter and no optional inverter.

also, i'm assuming you're talking about two 12v batteries. are they matching batteries in size and specs? do you have them wired in parallel?

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Old 10-08-2011, 05:44 PM   #3
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It does have a power inverter. But I have it hooked in series- 12 volt + to body , - to + then 12 - to body.
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Old 10-08-2011, 05:54 PM   #4
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Correction. It is just a convertor
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Old 10-08-2011, 05:56 PM   #5
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if i'm reading your response correctly, you've hooked it up wrong.
as you can see in the pic, 12v is hooked up parallel, 6v is hooked up in series.
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Old 10-08-2011, 06:00 PM   #6
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Two 12 V in series equals 24 volts...ooops! Where are you putting the extra battery?

I think the best choice if you really want battery capacity is to look at 6 volt golf cart batteries. These are designed to be deeply discharged and recharged over and over (very thick plates) and many are rated at over 600 recharge cycles. Two in SERIES gives 12V and about 200 aHr when discharged at about 10 amps... run your inverter, LCD TV, LED Lights, fantastic fan with power to spare! That's 20 hours at 10 amps continuous. Since they are used in golf carts they are readily available and not too expensive.

As an example check this out:

U.S. Battery-US 1800 XC - golfV


Cost about $ 85 each

at:

http://www.batteries4everything.com/...uc2940fedthjn5

Good luck!
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Old 10-08-2011, 06:02 PM   #7
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Yup, you've got 24 volts. I am surprised you didn't fry something!
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Old 10-08-2011, 06:42 PM   #8
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Hondaman, you might want to read "The 12v side of life".
it's always suggested here for info.

The 12volt Side of Life (Part 1)
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Old 10-08-2011, 07:00 PM   #9
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And with another few feet of wire, my project seems complete. Thanks
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