Not all AGM are good ones
While looking for something else we discovered some photos from one of a few sites that had battery issues and decided they would be of some interest here.
These are Telco grade VRLA/AGM batteries that are connected to high dollar power plants set specifically for that model of battery in an air conditioned shelter...in short, perfect happy conditions for the batteries.
The batteries in the photos swelled up and a few of them broke open.
This was not unique to one site but observed in a few, but the battery and condition was the same.
All of these were later taken out of service and replaced, but the point here is one needs to do their homework first to determine what battery to use, then they need to look at the battery selected to insure it has a long standing of installation history and overall quality.
The ones in the photos were "new" production and the price was right, but the end was a very bad deal.
These were not USA made, another batch from another company were USA made but had a different systemic failure.
The point of this post is to only advise that folks need to due a fair amount of homework if they are going to make changes from one battery type to another, changing type requires some engineering to insure charge rate and a few other details are proper.
We have seen many threads where folks do not take the time to address everything then they are upset that the end result did not meet their needs and then try to troubleshoot a design problem...system is working exactly as it should but does not do what the user wanted it to do.
Once the engineering is done for the final type of plant then the homework required to select all of the parts that will be used begins, and the suitability of the products for the use and the quality of the products need proper consideration to avoid issues as shown in the photos.
This may get interesting...
Tony & Lori
1989 Country Coach Savannah SE