It all depends on what sort of access you have.
The battery is one of the heavier components and if dropped there is good chance of acid spillage (or worse) so it pays to plan ahead.
You can remove from the top after taking off both terminals and the restraining rods, but it does require some pretty tight juggling with angles and tilting to clear the rear "hoop" . All of this has to be done with you bent double over the car and pretty much at full stretch. It can be done , yes, but you do need to be very careful once the battery is released that you have a very good grip and have worked out in advance how you are going to negotiate the remaining obstacles. You won't get an an opportunity to "put it down and try again"
If you are lucky enough to have a proper car lift , then you can remove the battery downwards , but now I would strongly advise having a helper nearby who can take the weight of it once released. You really don't want it to drop it!
1999 +8 , Indigo Blue.
Ex-John McKecknie/Mike Duncan 1955 +4 racer.