Mark of the Unicorn MTPAV Battery Replacement 

at 3:29 be careful dropping anything conductive inside an open circuit board. That metal port can short a component and wreck your device. And yes even if it’s not plugged in.

If you touch the new battery with the bare hands and you are ground, You will deplete the power of it from 50% up to 80%, use anti static gloves.

what was the problem with the motu, that you had to replace the battery in the first place ?

Whatever happened to VeganSynths? Is he still out there ineficiantly repairing old synths? Did he make it through 2020 intact? His voice and content are oddly soothing like a David Sedaris audiobook. Some say he was an uncelebrated peak in RU-vid between May - July 2018. Some say he'll return one day with another video. Maybe bumble around a bit, maybe do another comparison video. Nobody can say for sure.

But how do you make a backup of the memory before changing the battery?

Come on , very bad video !!!!