Right now the current aviation battery pack (on the Alpha Electro) weighs in at about 70kg per 11kWh, way too heavy, but that's already down from about double that only a few years ago. With companies like Tesla in the game now battery tech is really getting strong.
Have a look at all the stuff John Deere is toying with now that decent batteries are coming to market, it's really going to change farming methods.
https://www.deere.co.uk/en/agricultu...re-of-farming/