5oo cca battery

[capn]

Got a 2 yr. Old Yuasa gyz32hl in my 97 evo bagger and the spices of the battery have gotten concave 1/4 inch each side. What will cause this ?

[capn]

Of course I meant sides of battery.

[Ohio HD]

Since the case is sealed on an AGM, you sometimes get a vacuum when the weather changes or when charged.

[calif phil]

I see that in some batteries that have been exposed to freezing temperatures.