On Monday, May 18, 2020 at 6:16:48 PM UTC-4, John Foster wrote:
I'm looking for a good charger for my PowerSonic AGM batteries. I have a car charger, but that seems to be malfunctioning, as it doesn't seem to want to charge car batteries or my glider batteries. Any recommendations on a good charger for these type of batteries?

I am happy with my Battery Tender Plus. I personally use one and our glider club uses them for years. I currently also use the PowerSonic PSC 122000 A-C which has done well.