Ask Honest John

Most recently answered battery drain questions
My 2010 Nissan Juke will not start. The keyfob works but the ignition doesn't work at all. When pushing start button as usual, it just doesn't start. What could it be?
I haven't used my 2018 Ford Fiesta for three weeks now and probably won't be using it for a few weeks more. Should I start it up on my drive and leave the engine running to keep the battery charged?
I have SORN'd my Jaguar F-Pace during the Coronavirus pandemic. Besides turning the engine over once a week, what else can I do to ensure the efficiency of the vehicle?
You recommend trickle charging on a hybrid during self-isolation. We've got a Kia Niro, but I couldn't find visible battery terminals. Any idea where they are?
I'm considering buying a secondhand electric car but I go away for three months every winter. Will the battery go flat and cause irreparable damage if I leave it so long? I currently own a 2011 Mitsubishi...
What make of trickle charger would you recommend to keep a car's battery topped up during the current lockdown. I'd prefer a type which operates through the cigarette lighter socket.
I have a friend with a Honda CR-V. It has been to the garage twice, to no avail, for repeated battery draining. I wondered if you had any advice or knowledge of any common causes for this vehicle.
Does charging an iPhone or playing music on it drain a car battery?
The battery on my Opel Omega has run down even though it's just been parked up. What's the cause?
My 18 month old Mercedes-Benz E-Class won't automatically stop-start anymore due to a partly discharged battery. It's left in my garage for weeks at a time, so it's understandable. I took it for a 120-mile...