Multiple battery failures

[n74tg]

1998 5.2L Ram 1500

Voltage indicator shows 14 volts while engine running, yet new batteries last only 2-3 months before failure. So far they have been replaced under warranty, but I don't think they will replace another one.

Have checked electrical circuit for parasite drain, I show about 2 milliamp flow, so don't think that's the problem. I understand anything under 50 mA draw is normal.

Have searched forum for battery failure and battery overcharging, no luck.

Any suggestions... thanks

 

[jessyj]

I would put a voltage tester on the battery and see what it reads. Also are they quality batterys? some of the cheap ones can weld the cores together causing failure.