Afternoon... I've only had my 2nd hand Accord for a few weeks and this issue could have been masked by the fact that I would take my new toy out for a spin most days. However last weekend, when I came to unlock the car, the alarm sounded and things were obviously a little flat in the battery department. It had been standing unused for about a week. I jumped it with a little Noco lithium booster that I originally bought for jumping bikes, so was pleased to see it turn over the 2.4 lump, and the car comfortably recharged the battery on a 60 mile round trip to see friends. So yesterday, after another week standing, the battery was discharged again. It tested at a woeful 10v so I popped on a mains charger and left it for a few hours. Later, having started the car and let it idle for a few minutes the voltage at the terminals with the engine running was a healthy 14.40v so I take that to mean that the alternator is fit. With the engine off the battery was showing around 12.6v After standing overnight the battery was back down to 12.10v, but to my surprise was able to start the car. I think that the battery is a little under-spec for the car. It's a 45Ah unit with 330A cranking rating, but that doesn't explain the drain. Yes the battery could be dead/dying, but I thought I'd check on here for further tips before buying a new one. I read about the hands free telephone issue, but I don't think my one has the Honda HFT. It has an aftermarket Parrot system which seems to be functioning correctly. Are there any other smoking guns in terms of battery drain? Or is it just the way these cars operate and my battery is probably on the way out? I'm used to the simplicity of old bikes. Turn off the ignition and come back a year later to a fully charged battery.