CobyRupert
Super Member
How do you check a sealed top battery with a hydrometer? Load test after a full charge cycle is the only way to verify the condition of a battery.
OP has load tested battery, it was "not bad".
I went through same thing last winter. First a weak start, then needed to be pre-charged to start, sometimes, depending on how long it sat. Load test was ok. Then I'd complicate the analysis by topping off battery acid.
A new battery was the answer.