I wanted to post an update after my original post several weeks ago…
My original ring had the battery drained so many times before I purchased my solar charger. It would not hold any charge at all after charging all night and hooking up to the solar charger.
Purchased a new ring doorbell, charged overnight and hooked up to the solar charger. It has been several weeks, maybe just over a month, and I’ve not had to re-charge it once. Checked the battery today and it’s been holding at 79% for quite awhile. It will sometimed drop below 79% a bit, but on a clear day if the solar charger is clean (no pollen covering the cells) it will charge back up above 80%. I live in south florida so I have to wipe all the pollen off of the cells every week! But it’s working for us.
Hope this update helps.