can't find source of battery drain

[Mark805]

The odd thing is my battery always slowly draw down and once weak the H2 alternator never gets it back up even on long highway trips? When the battery is weak I need to charge it with an external charger. When this is done, the battery is strong for 3 months but eventually starts to weaken and again the alternator never gets it back.

That was my problem as well... Mine would sit a week or so and then i'd have to jump start it. The battery always charged back up but would die in a few days.

If Hummer didnt replace my battery i was considering an optima battery as from what peoople have said here.. they seem very happy with em.

[lonePalm]

I have put 2 of the optima batteries in and now I need a new battery again! I was told that vibration is not good for these gel batteries, Dont know how true that is but I'm tired of jumping this thing....Trust me 2 optima batteries at $200 a pop in less than 2.5 yrs I'm going back to the oem style at $134... I will not buy them again.

[Mark805]

Originally Posted by lonePalm

I have put 2 of the optima batteries in and now I need a new battery again! I was told that vibration is not good for these gel batteries, Dont know how true that is but I'm tired of jumping this thing....Trust me 2 optima batteries at $200 a pop in less than 2.5 yrs I'm going back to the oem style at $134... I will not buy them again.

Wow... I would agree with you there. 2 in 2.5 years is a bit much.