I have two of them...I wouldn’t say you’ll have any problems replacing the battery, it’s a matter of removing the clips on the top cover, and leaving the top cover in place loosely, next plug the printer back into wall socket then proceed with the battery removal..
But before I’d unplug the printer again I’d leave the top cover loosely on top again and power on the printer as a caution where you can check if your installation was successful, i.e. no on screen messages of pending doom like..
@palombian, your turn to be the Guinee pig this time..
P.S. I can't do it, I don't have the Pro 10...