Facom CDX socket I bought over 20 years ago.
3/8" size with the strength of 1/2" was the selling point I believe. Not sure they are in production anymore, all French made in this set.
Sockets can also be used on a standard 3/8" square drive ratchet.
Yes it's the 36v mower.
I only used the two 1.5ah batteries on my mower and it did 50sqm of lawn without stopping. So probably 15 minutes run-time.
I too have picked up a strimmer, top handle chainsaw and hedge trimmer along the way...
I think when the 40v Makita garden stuff eventually hits...
Think I would opt for a plastic deck over steel for a mower.
I have the DLM380, which was one of the first cordless mowers they did.
Works fine on dry grass and at medium length, doesn't have the power if a little wet or too long. But even needing to do it a few times a week was no bother.
Looks very much like an ELU MH20 I had many years ago.
Same company as B&D so brushes below will probably fit.
https://www.sparepartsworld.co.uk/product/320876
Makita DTD156 18v Impact Driver for £49.99 from Screwfix.
https://www.screwfix.com/p/makita-dtd156z-18v-li-ion-lxt-cordless-impact-driver-bare/498JJ?tc=XA4