Quote Originally Posted by Kennedy View Post
Definitely true but 20% and even a touch lower is fine. That's where a programmable BMS comes in. I can set the top (and bottom) voltages that the battery will accept plus with the off grid solar charge controller I can set the top charge voltage to simply "not go there"
Programmable chargers sound nice. Overcharging kills batteries of all types. I developed an automatic field charger for Radio Control systems back in the early 1980's. It was also part of a story I wrote for the leading RC magazine at that time. It was pretty simple to do. You'd think that Apple, battery tool manufacturers and every other manufacturer would just do automatic chargers as standard practice.