From the Get Go
Car, Boat, Cart is does not matter. If it sits for more than a day it needs a battery tender.
If the batterys are not driven with a battery healthy lifecycle they need a battery tender.
Not a charger, trickle charger but a smart charger or a smart tender, There are several models out there.
The tenders have the ability to measure the capacity of the battery plates the open cell state of charge and then charge the battery plates with the corect voltage and amperage.
All I know is they work they are not snake oil they do enhance and or replace a on board charger. And on line are much cheaper!
Herv
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