I have an efoy for the last 2 seasons. works great. Not inexpensive, but works great..especially at night!
i had another thread from last year trying to sort out my battery
problems , in which i took a bit of a beating on the efoy and not using solar
. the efoy has had their software
upgraded to perform better.
Best practice for desulfation battery bank
this was followed up by the aforementioned thread i started the other day about my batteries still having problems - Can my batteries be saved?