So..
...even though the battery light was a bright red, I saved the game and it crashed. Now the save is predictably in a broken format and can't be read (at least without extra hardware).
I was rather enjoying my 10hr game, just before the SS Anne and grinding my 'karp to a Gyarados, with a recently evolved Sandslash.
I can see that there are save editors for use, but does anyone know if there are save builders - that put you in a particular location at a particular level with progression flags automatically set to your point in the story?
I can't say I'm big in to Pokémon lore - my introduction to the series was with Go - so some of the intricacies are beyond me but I'll faff with editors if I need to and import them into an Android emulator if it comes to that.
Thanks in advance!
Honestly, I'm still gutted about the loss so I've not gone back to it. It's not had any real shocks - it gets left in a work bag on an odd occasion that gets lifted and shifted but never mistreated.
There may well be a hardware issue, maybe one day I'll break out the ammeter and see what it's doing.
Thank you for the insight though, all very appreciated!