Solar float mode: Necessary?
As a practical matter, is float mode necessary with solar charging? As an alternative, the controller would simply stop charging when the battery was full. The next day the process would repeat. ...
Forum Discussion
"Charging it fully in Bulk and Absorb mode without Float would mean unnecessary heating/boiling - it's better to let it finish the last 5-10% in Float."
It is better but not always possible on solar if dark gets there first. It could be necessary to leave it at the higher Vabs till the batts are full, and then drop to float or as the OP suggests let night-time do that anyway.
IE it is more important to get to full than drop to float at 90% and never reach full that day.
It is all situational. Each "user" needs to keep an eye on what his situation is at the time and place and adapt. Having a Float option on the controller lets you adapt to more situations.
It is better but not always possible on solar if dark gets there first. It could be necessary to leave it at the higher Vabs till the batts are full, and then drop to float or as the OP suggests let night-time do that anyway.
IE it is more important to get to full than drop to float at 90% and never reach full that day.
It is all situational. Each "user" needs to keep an eye on what his situation is at the time and place and adapt. Having a Float option on the controller lets you adapt to more situations.
