Red=Dead (almost): LR4 Discovery 4 Battery main infotainment screen warning!

Red = Dead...
the Land Rover system is shouting out via the infotainment screen that your battery is almost dead.. no longer living.. pining for the Fjords!
The reason it is going to shut down in 3 minutes is because it is trying to preserve just enough energy in the battery to start the engine again...
It is much better that it does this than leaves you stranded.
If you see this screen you Really (no I mean it) have to buy a new battery now...

TIP: When replacing the battery remember to reset the BMS (Battery Management System). use a GAP IID if you have one.
NB.. the new battery will be seen to 'discharge' and then to recharge. This is so that the BMS 'learns' about the new battery and can charge and maintain it in the most efficient way 👍