Peter,The previous owner of Respite had to replace 4 Group 29 batteries. He said it was the solar chargers. From the little I know about electricity,  I agree with you, it seems unlikely that a 10 watt charger @ 1amp could over charge 600+ CCA batteries. But he was a EE, PhD from Cornell, what can I say?  Then again, I went to a little ol' southern state engineering school!Joe DempseyTrojan 42 MYM V VoyagerEx-Rhodes22S V RespiteDeltaville, VASent via the Samsung Galaxy S22 5G, an AT&T 5G smartphone

-------- Original message --------From: Peter Nyberg <peter at sunnybeeches.com> Date: 11/5/23  3:14 PM  (GMT-05:00) To: rhodes22-list at rhodes22.org Subject: Re: [Rhodes22-list] Solar panels? I am aware of no instances where anybody reported overcharging or other damage to batteries resulting from connecting the small solar panels installed by General Boats directly (i.e. without a controller)In my case, I have two 100 watt solar panels mounted on an arch over the aft end of the cockpit.  These are connected to a solar controller that lives in the lazarette, which is then connected to the house bank.  I still have the two small solar panels on the cabin roof, and these are connected directly to the batteries, as they were when I picked up the boat from General Boats--Peter> On 2023-11-05, at 12:04:21 EST, Joe Dempsey wrote:>> You can use  volt meter. You can also check the Amps. Advise installing a > controller to prevent over charging.Joe DempseyTrojan 42 MYM V VoyagerEx-Rhodes > 22S V Respite Deltaville, VASent via the Samsung Galaxy S22 5G, an AT&T > 5G smartphone >