Why do traditional cars lack any decent ability to warn the driver that the battery is low or about to die?

Question

You can test a battery if you go under the hood and connect up the right meter to measure the battery integrity but why can’t a modern car employ the technology easily? (Or maybe it does and I need a new car)

In: Engineering

Answer 1

They don’t lack this. Every car for many many years has a volt meter and most have a warning light or message if charging gets too low.