Join Date: Sep 2008
Location: Victoria B.C. Canada
Thanked 105 Times in 96 Posts
Rep Power: 9
One solution is an external regulator like Balmar's MC-612 which lets you adjust the alternator output and has temp sensors as well.
Switching to AGM batteries without other changes is not always a good plan and often is just a beginning of problems and further upgrades are often necessary.
You might find this recent thread interesting.
Living aboard in Victoria Harbour