Whats the current cranking amps of your wet cell battery Rich ? Go for a similar match to that if it used to be okay. Leccy windows make no difference as you generally are not operating them when cranking the engine.

Yep because they are sealed and contain no liquids there is no need to box them and no gasses are produced so they are 100% safe.

Mine lives behind my seat for central low down weight distribution, and to have that comfort and piece of mind I would pay any price.

Names make no difference Im still me