M1079a1 start issue

[Union5]

AGM batteries that are badly discharged or sulfated will need weeks of pounding by an AGM charger. Then they will be good as new. Several threads on this.

Would just running the truck for a while give them a good enough charge? The gauges show the alternator is working. I've never had an issue before and the truck is run once a week for an hour. The ABS light is tied to the lack of battery power on start up?

 

[NDT]

Would just running the truck for a while give them a good enough charge? The gauges show the alternator is working. I've never had an issue before and the truck is run once a week for an hour. The ABS light is tied to the lack of battery power on start up?

Your own experience here says no. There are $2k worth of batteries sitting in that box, to me it is worth a $100 charger to keep them alive.

 

[Davisonsite]

The ABS should not be a Batt problem. Did then air build this time, How about the Ctis system.