The wife's car has been cranking slower after sitting overnight. The battery charges fine but is losing voltage when not used for 8+ hours. The fluid levels are low in each cell and contrary to the title of "Maintenance Free", lead acid batteries still require maintenance. You can extend your car battery life by refilling the cells. See the links below for the parts and tools I used:

Distilled Water:

https://amzn.to/3Ru9SSA (affiliate*)

Funnels:

https://amzn.to/3RPWLw8 (affiliate*)

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