What did you do with your Range Rover today

I can't imagine there's no breaker to isolate the battery before you start any works on the rest

Usually jumper links to split the battery into smaller & lower voltage sections. There will also be a main contactor to isolate the battery from the BMS when required.

Many now have low voltage jumper somewhere to allow emergency services to force the main contactor off & cut the power.

Got mine back on the road, ended up buying sort of by accident of a mate a 11reg merc E350cdi, new for me as iv never had 3l v6 diesel, saloon, or merc or rear wheel drive. Lovely car on motorway, very quiet and RWD was fun on damp corners but recommissioned the 4.2 Sc L322 today, other half was going mad that I’d not sold it - never bothered to advertise it and decided other week even though I like the merc just didn’t click with it like I do the RR even though it’s more maintenance and more rust etc there is something about them.
Anyway took it out for fuel after MOT and proper howl noise sounded like brake or something and other half found it was her front passenger window down a mill or two causing it, I’m guessing MOT tester didn’t let it go right up.
On another note mercs are expensive on parts, air flow meter (2 built in the air intake pipe) £800+ vat! The rangie with its V8 only has 1 air meter, also a right pain to work on, not designed to be fixed.