The articles I have come across says yes.
If normal radio, still ok. But if you wanna play music with amp
whiel engine is off, dun do that . You may have difficulty starting
the engine later.
Dun you notice that if you on your radio and start the engine
thereafter, the radio is off by itself for a few seconds while the
engine is starting up. That's bcoz starting a car requires near
full batt strength.
Air-con on while engine not running is a No No.
Dun try to save petrol in such a way. You are draining your batt
and putting yourself at risk of engine not being able to start
later. When batt is low and you require to turn the ignition longer
to get the engine started, you are also shortening your starter's
life span.
