Quoted from Diospinball:
I don't think you realize how slow I am when I work on anything. Not very good at this kind of stuff... I don't want to damage or break anything. and not certain how to really go about doing either the removal. or the nvram install. Trying to find videos of similar stuff online.
I don't think that battery and its acid really care about how slow you might be.
It's all about priorities. It's your machine, you can do whatever you want with it. Anybody who has dealt with acid damage on an mpu will tell you to remove the battery from that board, rather sooner than later. Still. Your machine. Your energy. Your call. But also: your problem when it goes wrong. And wrong it will go, eventually.
Realise that waiting could make things a lot harder. If you wait too long, there will be a *lot* more to do than just a battery pack to remove. Worst case? You will be not only be ordering a new MPU, but also find yourself torturing yourself by repinning all the connectors to the MPU, because the acid also went into them. Believe me, you don't want that. It will not only cost you money, patience and energy, but also 100 times more backache than smartly removing that battery.
Also realise that a clean, original Gottlieb system 80b MPU is becoming quite a rarity these days. If you have one, cherish it. And keep it clean by removing that battery.
If you're scared that things might go wrong, ask people here how to do it, step by step. You'll be pleasantly surprised by the help you will get. Maybe you can even get a skillful pinhead to do it for you. I would, if I lived close.
So. Long write. Excuse me for that. If you have any questions on how to go ahead: shoot! If you're looking for a different answer to the question if you should remove the battery: you are simply not supposed to get that in a community that cares to keep pinball alive.