[roKWiz]

Have to comment here.
All the Century batteries I use have had no problems bar one which was a sealed lead acid battery used in a car.
I specifically order the larger type with the removable venting cap.
Serviceable type cells.
They are fitted in every vehicle I own including the smallest in the panel van.

Our little house is solar powered by 8 x N150 wide 11 plate non deep cycle
"Heavy Equipment" versions.
The motorhome has 2 x NS70 starting and 2 x N150's house batteries see above.
The boat we lived aboard for several years has the original 3 x N150s house batteries as above.
The oldest Ford Trader starts on a N120 as above.
The Kenworth has 2 x N120's through a series parallel starting system.

The old motorhome we lived and traveled in for 12 years had a bank of the same above and lasted as long as I had it.

Imo these are the best batteries I have used and have lasted years even while being in bulk/float charging state while not in operation. I would have a hard time being convinced to use anything else. Despite all the experts.

Not one of the mentioned above as house batteries were true deep cycle.
There is no such thing as a maintenance free battery.