Good morning. As the title says, twice this month I've had a flat battery and had to be rescued by a Mercedes Sprinter yesterday evening! Last night I called at the chip shop and as I was parked near a cross roads (not illegally parked but parked near) I thought that as I was only going to be a couple of minutes, I'd leave my position lights on as a safety measure. Could've used hazards but at 4 x 20W rather than 6x5W they would use 50W (4A) more power. Parking facing into the oncoming traffic I think there's an obscure law that you must have sidelights on. Should've cooked me own tea rather than being lazy! Anyway jumps back in the car and there's no power to start it. Surely (and in my nearly 20 years of driving including some near scrappers) this should not and has never caused an issue. I could understand if I'd left my headlights on, on main beam, for 3 hours but surely a diesel battery especially can run 30W (supply 2.5A) for a few minutes and not even notice it? Particularly as the car has done 200miles in the last 2 days so the battery should be fully charged. I called Honda Assistance and they said it may be up to 2 hours (probably busy with Audis ) but they were on the scene in 45minutes . It was a local firm CF Recovery they must sub-contract to the AA and they run Sprinters. He put the booster battery on and it fired up straight away. Didn't have time to give the car a run as I was already running late so hopefully it'll start this morning or all the bratwurstwagen owners on the street will think they've got a more reliable car than a Honda when the recovery turns up! Then it's off to the Dealership. They're probably fully booked as it's a Saturday but then again I have just given them a load of dosh for a new car so it's not entirely unreasonable to just turn up in my opinion. Think it wants a new battery but having said that it doesn't display the classic symptom of a dodgy battery of being sluggish to fire up first thing in the morning. Surely it can't be a parasitic drain on the system either otherwise it would be flat as a flat thing every morning. A bit of a mystery. Every time I start it, unless it's red hot, the glow plugs take a few moments to go off. Do these put a massive drain on the system? I'd just blasted up the A19/A1 so the car was hot at the time last night so didn't need the glow plugs. .