https://support.apple.com/en-gb/guide/security/sec90cd29d1f/web https://support.apple.com/en-gb/guide/security/sec90cd29d1f/... - I've never used it, but it's m

https://support.apple.com/en-gb/guide/security/sec90cd29d1f/web https://support.apple.com/en-gb/guide/security/sec90cd29d1f/... - I've never used it, but it's meant to work for around 5 hours after your battery dies.