Ask Honest John

Most recently answered batteries questions
I have a Volkswagen Golf 2.0 TDI and will be going abroad for between 4 to 6 weeks with my car parked on my driveway. No one else will be in the home when i'm away so I won't be able to trickle charge...
I have a SEAT Leon, the engine stops at traffic lights etc and restarts automatically when you are free to go. Recently the car does not restart and a message says restart manually. Is this a sign that...
Can you please suggest a trickle charger for winter use which can remain connected to the starter battery of my 2013 2.2 TDCi Ford Transit Custom?
My 2016 Nissan X-Trail occasionally won't start The battery shows 11.8v and the dash lights up but the car only clicks when the ignition key is turned, but it starts strongly with jump leads. Any thoughts...
My Yaris Hybrid can touch 80mpg in summer but drops down to about 60mpg in winter. Any reason for that?
Can you suggest a suitable trickle charger for my mild hybrid Mercedes GLC 300? There seems to be a lot of choice.
We will not be using our car for about two and a half months in the autumn. Do you think that we need to fit a battery conditioner whilst we are away? The car, a Cupra Formentor V2 1.9 bhp was new at the...
I bought a Meriva from a Vauxhall main dealer less than three months ago, but the battery has now failed. Are they responsible for replacing it?
As we (both in our 70s) will be self isolating for three months, what is the best thing to do to look after our cars? We have a Volvo V70 D4 and a Seat Ibiza (petrol). I am always worried when it comes...
My wife's Suzuki Vitara petrol is only used for occasional short trips and the battery is running low on charge. Can I charge it in situ using a standard non-smart battery charger without disconnecting...