I use a change-out (every 3 years) automotive battery and the Harbor Freight 42292 float charger on a venerable 3KW Onan generator. Good service, as the generator never fails to start even after many years. The box claims the 42292 will deal with flooded cell or sealed lead-acid batteries. My experience with this charger is limited to flooded, automotive and "RV" deep-cycle batteries.
Our radio club's (NHARC.ORG) trustee keeps a trio of AGM deep cycle batteries happy between field days with the Battery Tender system as mentioned by another poster. 72, Tim ____________________________________________________________ How to Sleep Like a Rock Obey this one natural trick to fall asleep and stay asleep all night. http://thirdpartyoffers.juno.com/TGL3131/516386e2aef906e2353est03duc ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html