Originally Posted by Carpenter61
It is good for about 8 to 10 hours and drains again,
I would still double check the battery to see if it is able to hold a charge..
Disconnect the battery from the TT and charge the battery with the external battery charger. Once charged, disconnect the charger, do not connect the battery back up to the TT, take a voltage reading. Wait the 8 - 10 hours and take another voltage reading. It should be almost the same as after you charged it. If the voltage is OK, your battery is not the culprit. Is the water level of the cells OK?
Check the TT's battery charge controller output:
The easiest way to check TT's battery charge controller is to pull the 30Amp fuse by the battery and with a voltage meter:
- Check the fuse holder on the TT side for 12 - 13 VDC
- Check the fuse holder on the Battery side for 12 - 13 VDC
(ground the meter lead to the TT frame)
If you do not have voltage on the TT side of the fuse holder, you may have:
- a bad connection at the TT's battery charger?
- a battery charge that is not producing a charging voltage?
- a bad wire between the battery charger and the fuse holder?
- reverse polarity fuse blown?
If you have a 12+ VDC on each side of the fuse holder, you can start to isolate the drain. I can give you a few tips on an easy way to do that if you have a volt meter that has an 10 Amp reading capability.
If you do not have 12+ VDC on the TT side of the fuse holder your next step is to open up the TT's power panel and check the output lead to the battery.
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