Not rocket science but that is my farming conversion.
It was a typical brand new Chinese 18HP diesel tractor.
Now running 5kw 48V DC brushless motor,
48V lithium battery pack 20Ah 2x from an electric bike.
There is room at the top to install now solar panel 350W to replace tarpaulin,
but so far I could carry dirt the whole day on a single charge.

in the place of a diesel motor, I did install self tipping tray, powered by 12V actuator/ electric ram
I still could use all 6 gears but, in fact, I use only 2nd gear and foot pedal - plus reverse electric switch all the time.
The next to undergo conversion is this small digger.
I intend to use a similar 5kw DC motor. The main reason for conversion is convenience.Any of those devices run only for a few minutes then need to wait idly. Electric is ideal in such a situation. say nothing about the noise. If somebody here has some experience with hydraulic pumps, power pack I will be happy to learn how to install an electric motor to power digger.

before conversion...
I agree looks nicer,
but now is more practical for what I need. Short-run towing, moving