I wouldn't say holy, more like cheapskate emergency grail, since it's a whole amp hour less than the original, and requires a lot of elbow grease to replace.
Yes, I took the board off the original battery, it was soldered so came out clean. The replacement was similarly attached to its own board, but I ended up physically breaking it off by repeatedly folding the tabs, which I guess made them a bit shorter. If you are better than me with a soldering iron, or maybe use a heat gun you should be able to de-solder those as well, and that will give you a better surface to work with. They of co