kubota battery losing power

[Groverbbbbb]

I have a new Kubota battery which loses power over night. It also loses power if it gets wet.

 

[EE_Bota]

I have a new Kubota battery which loses power over night. It also loses power if it gets wet.

What state? There is a Ramseur right down the road from me so you may be close enough for me to help directly if need be.

What I would do is get an idea of how much it discharges, and then recharge and remove the negative battery cable and see if it still self discharges too quickly. If so, the battery is likely bad, and if not, the problem is being caused by a current leak to ground. I'd then try to find that by pulling various fuses in the dark. If you pull a fuse in the dark that is carrying current, you should see the tiny spark as the fuse is pulled.

Many times though, it seems that if a battery is being discharged and the battery is not the problem, a bum diode in the rectifier circuits of the alternator is the problem. Just as you removed the negative cable in a previous test, it is possible to remove the cable that comes from the alternator, and therefore be assured it is not bleeding current.

Good luck!

 

[Briana03]

Welcome to TractorByNet!

I moved your thread to the Kubota Owning & Operating forum.

 

[skyhook]

Put a volt meter on it.
Test it when it's not running, it should be about 12.4 volts.
Then test it again when running, it should be in the 14 volts range.
If it's charging like it should, it shouldn't go dead over night.

 

[Tx Jim]

Disconnect battery ground cable & insert test light or volt/ohm meter and check for a drain. It's possible voltage regulator is malfunctioning.

 

[Deano]

Worth a look...

Starter Voltage Drop - YouTube