N7turbo
2023 CX-5 2.5T ... 2024 MX-5 RF GT
The idea isn't to charge the battery (though in theory I think you could) but to provide enough current to power the systems which would allow you to use the fob to unlock the doors. Then you can get the hood open. I haven't done it myself but it should be possible. But given that you should get a key made anyway, it's best to just go that route.