Other than one tournament per month, my fishing trips are 4 to 6 hours and the charger is always hooked up on the parking pad.
With this schedule, I have never had a reason to think much about the size of the battery charger. I don’t even know how long it takes the small charger to recover a heavily discharged battery so don’t have a qualified opinion.
I plan to make some changes in the way my units are wired. I was concerned about stacking the connectors on the small posts so went to a lot of trouble to install the small connection blocks. As I often do, I was over thinking it and plan to remove them and use the post on the battery.
I am also considering a way to seal off the hole where the wiring passes through the locker wall. Haven’t found the perfect thing yet so the install is still evolving.