I bought a cheap replacement battery for my aging Mini. The old battery had started to lose charge really fast and especially if it was cold outside.
The replacement went well, even if it was really hard to remove the white top and bottom plates without scratching the metal around them. My unit has a dent in the top corner that has pressed the metal inwards. This means that the plastic doesn’t really fit anymore. Oh well.
Next project is to find a cheap 8GB Compact Flash card to replace the hard drive.