Hi folks, my latest car’s a 22 reg. last Saturday drove about 12 miles, stopped in car park whilst the better half went to shop so switched off and power on to listen to car radio. After about 4 minutes radio went dead. Could not restart it. Dashboard lights would come on but engine would not turn over. AA man called out and battery failed test. Car started with his booster and driven to local Honda garage. Just been told the battery only needed a charge and could easily be depleted after listening to the radio for only 4 minutes. I’m not convinced. Anyone else had poor battery life problems?

battery would have to be pretty poor to flatten in 4 minutes, 

That’s what I thought. Honda garage just said it was flat and just recharged it. They said to always start the engine as there’s a lot of electronics running when you just switch the ignition on. Never know batteries use that much in 45yrs+ of motoring.

I had similar issues, try inserting one of those digital battery voltage check devices into the auxiliary socket and monitor the reading over a week or so, with vehicle in auxiliary setting and also with ignition on. Observe what happens.