D. Dalton wrote:
I installed a new battery in my car just two years ago. That seems a bit
recent for a battery to give out...

Is there an easy way to determine which is giving problems: the battery or
the charging system?

TIA

Check the battery voltage at the terminals using a DVM with the engine
running at a fast tickover. Anything over 13.7 volts means your charging
circuitry is probably okay. If it's lower, go for a run of about half an
hour in daylight and repeat the test.

Or take it to your local Kwikfit or other battery shop who offer a free
test, and ask them to put their tester on it.

--
Tciao for Now!

John.