I have a World Friendship converter, and it seems to be reducing my 12 volt power. I will explain, when plugged into shore power it works fine putting out 13.6. When I unplung and run on battery, I have the problem. I have 2-115 amp hour battery's, reading 12 volts with my tester. When I turn on some lights and the pump runs the battery's stay at 12 volts, but at the converter it is down to 10 volt. The pump won't shut off because it is down to 9 volts. I disconnected the converter from the distribution panel, and it helps considerately the voltage comes back up to 11. I have no problem buying a new converter, if that is the problem. I just don't want to buy one and still have the problem. Any insight into what could be happening?This is a 2006 living quarter horse trailer that I just bought, I think it spent most of its time plugged into a/c at horse shows

I'm thinking it's your batteries are dead and need replacing. Your converter is doing it's best to charge the batteries when you are plugged in, but as soon as you disconnect the battery voltage drops down to almost nothing. A good battery would hold a charge and show you 12.6 volts or more for many hours after you disconnect from shore power.

Artum Snowbird wrote:I'm thinking it's your batteries are dead and need replacing. Your converter is doing it's best to charge the batteries when you are plugged in, but as soon as you disconnect the battery voltage drops down to almost nothing. A good battery would hold a charge and show you 12.6 volts or more for many hours after you disconnect from shore power.X2

The battery is 12 volts and the fuse panel is at 9 volts? At the same time? If true then you have a high resistance (bad) connection between the battery and fuse panel. But I think the batteries are suspect. Have the batteries been allowed to discharge below 12 volts in storage? (very bad)

Anytime a WFCO converter is involved in a problem, my money goes on the converter as the culprit.Just because you see over 13 volts, doesn't mean it is putting out much amperage and a good reason for bad batteries. But your batts may be bad, but probably because of that converter.If you replace the converter, and it doesn't really fix the problem, you didn't waste any money, trust me.

I am sorry maybe I did not explain well enough, or give enough back ground. One battery is an Interstate that I bought last spring, that I kept from my last trailer, and the other is brand new. The batteries are at 12 volts and hold their charge, and I have 12 volts to the converter and fuse panel with no thing running. When the converter is hooked in and I turn on 6-12 volt lights and then the pump runs I have 9 volts at the pump, 10 volts at the main lug of the panel. If I disconnect the converter the volts raises. The voltage in the batteries does not change with the current draw.

Question about converter | Good Sam Community

24 Replies

RJsfishin
Explorer
Apr 24, 2014
Anytime a WFCO converter is involved in a problem, my money goes on the converter as the culprit.
Just because you see over 13 volts, doesn't mean it is putting out much amperage and a good reason for bad batteries. But your batts may be bad, but probably because of that converter.
If you replace the converter, and it doesn't really fix the problem, you didn't waste any money, trust me.
time2roll
Nomad
Apr 24, 2014
The battery is 12 volts and the fuse panel is at 9 volts? At the same time?
If true then you have a high resistance (bad) connection between the battery and fuse panel. But I think the batteries are suspect. Have the batteries been allowed to discharge below 12 volts in storage? (very bad)
mena661
Explorer
Apr 24, 2014
Artum Snowbird wrote:
I'm thinking it's your batteries are dead and need replacing. Your converter is doing it's best to charge the batteries when you are plugged in, but as soon as you disconnect the battery voltage drops down to almost nothing.

A good battery would hold a charge and show you 12.6 volts or more for many hours after you disconnect from shore power.
X2
Artum_Snowbird
Explorer
Apr 24, 2014
I'm thinking it's your batteries are dead and need replacing. Your converter is doing it's best to charge the batteries when you are plugged in, but as soon as you disconnect the battery voltage drops down to almost nothing.

A good battery would hold a charge and show you 12.6 volts or more for many hours after you disconnect from shore power.

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