I got a Big Crank last year, it came fully charged, put it in and go!  Since it's like a gel cell (sealed - no vent tube) it can be shipped UPS, unlike a wet cell which i think is shipped empty.

I have never put it on a charger, but I ride abt 25 miles to work most every weekday.

I did have to bend up the fold over tabs on my cables with visegrips, the new battery's terminals are a bit wider and heavier.

Stores around here tend to store batteries dry, and only add the sulphuric acid etc. one you've purchased them.  So, we purchased a new bike battery, then h and I brought it home, charged it up and mounted it on the bike.

I got the battery from a large automotive store, but they likely don't sell enough motorcycle batteries to keep them charged and on the shelves.