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Old 05-02-2018, 05:29 PM   #1
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Battery charging question

Hey guys. Got a question on charging my trailer batteries. When not using my trailer can i hook a extension cord from house to my converter so the batteries stay charged. Ive got a 55 amp powermax hooked up to 2 deep cycle amg batteries.
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Old 05-02-2018, 05:47 PM   #2
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I'd check the manual for your converter. Many of these units will tend to overcharge your batteries. If your converter is such a beast, try buying a 1 - 2 amp trickle charger. That will keep them up to snuff.
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Old 05-04-2018, 12:19 PM   #3
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The simple answer is yes.
Most residential circuits are good for 15 amps and the roll-down from 12V stuff is about 1:10. So, that 55 amp charger will max out at about 6 amps.

But, if that PowerMax is not new enough to be a good smart charger, don't do it because it will cook your house bank. If you want to leave the line connected indefinitely, get a good converter like Iota or Progressive Dynamics.

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Old 05-04-2018, 04:19 PM   #4
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Hi ! Welcome to IRV2! We're sure glad you joined the gang!

I agree with what the others have told you.

Good luck, happy trails, and God bless!
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Sometimes I sits and thinks, sometimes I just sits.....
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Old 05-04-2018, 06:39 PM   #5
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Three answers all the same YES
Short answer YES
longer answer Use a 12ga extension cord if your 30 or 50 amp cords are not long enough (I have a 100' 12 GA cord)

I like the 12ga cords at Sears/K-Mart with teh push button on the outlet.

And 3rd: IF your Powermax converter is a plug in not hard wired or intergrated.... Just plug in the converter. I can do that with my Progressive Industries. 9180 Works well.
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Old 05-06-2018, 10:31 AM   #6
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Originally Posted by Jethrpdean View Post
Hey guys. Got a question on charging my trailer batteries. When not using my trailer can i hook a extension cord from house to my converter so the batteries stay charged. Ive got a 55 amp powermax hooked up to 2 deep cycle amg batteries.
Make sure your charger is 3 stage, which includes float mode. Or continuous use will fry your house batteries. If no float either get a new charger or just buy one or two float chargers. $20-30 each for a battery tender brand.
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Old 05-08-2018, 11:55 AM   #7
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Yes, but check the battery water level BEFORE when you do so; most CONVERTERS high charge (14.4v) for 1-hour, then trickle charge (13.4v) after that.
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battery, charging

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