Mahindra 2638 Battery

   / Mahindra 2638 Battery #1  

Pkty

New member
Joined
Jun 29, 2019
Messages
15
Tractor
2007 Montana 3840
Just won’t if anybody else is having the issue of battery draining if left unused for a month. After second time battery won’t take a charge. Tractor only 9 months old and battery may be covered under warranty if they ever get back to me. Thanks in advance.
 
   / Mahindra 2638 Battery #2  
battery may be covered under warranty if they ever get back to me. Thanks in advance.
I doubt it. Usually batteries and tires are warranted by their respective manufacturers.

Does you tractor have an ECM? If it does, the ECM requires constant voltage and current to remain viable. I'd suggest a battery tender if you don't use it often. I don't have that issue with my Kubota's (100% mechanical) so no parasitic draw.
 
   / Mahindra 2638 Battery #3  
My skidsteer used to drain my battery. Dealer actually told me when I bought to disconnect the battery each time I was done with it. He was correct, so I put in a quick disconnect on the battery.


Maybe six years later I had to replace the alternator. Started to leave the battery connected, and never had a drain down issue again.

so.....somehow the original alternator itself was draining the battery.
 
   / Mahindra 2638 Battery #4  
Bad diode trio or faulty electronic switching internally. I have disconnects on both my tractors, keyed disconnects because I leave them sit away from the farm when using them and keyed disconnects reduce mischief when they aren't here. Don't need no delinquents taking joy ride.
 
   / Mahindra 2638 Battery
  • Thread Starter
#5  
Bad diode trio or faulty electronic switching internally. I have disconnects on both my tractors, keyed disconnects because I leave them sit away from the farm when using them and keyed disconnects reduce mischief when they aren't here. Don't need no delinquents taking joy ride.

Update. Dealer replaced defective battery under warranty.
 

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