Ask Honest John

Most recently answered battery drain questions
I am aware of the problems with the starter battery if the C-HR is not used regularly. I am away in the winter for about a month without the C-HR. What is the best way of insuring that the battery will...
I bought a used car less than two weeks ago. It's a 2016 reg. The battery has failed three times since I bought it. The first time a friend jump started it for me, the second time a mechanic used a power...
I see you have recommend the CTEK MXS in the past. Would it be suitable for my 2022 Vauxhall Crossland which, due to my unexpected poor health, is now only covering 2000 miles a year? Is there any limit...
At my 4 year service on a Renault Zoe, I was advised to replace a secondary battery, not the one which drives the engine. The staff could not explain why this was necessary. Can you advise please?
Does playing the radio with engine switched off cause battery to go flat within 20mins?
My 3 year old 14,000 miles Volkswagen Golf (which I love) is eating through key batteries and the keys were replaced last June under warranty. It’s still happening and the batteries were replaced 3 weeks...
I own a 2018 Jaguar F type 3.0 (380) with 14,000 miles on the clock. Recently, I've started to experience battery issues. The car only does 2,000 miles a year and often spends three or four weeks without...
My wife has the Toyota C-HR Hybrid and we have just returned from a long holiday (11 weeks) and the battery is flat. Would a solar charger be sufficient to keep the battery in good order? Does the C-HR...
My mother-in-law is 82 and every other week her hybrid Toyota e-CVT is going flat in the Autumn. Yes, maybe a new battery is in order (it's coming up to five years old) however I wondered if there is...
I have owned a Fiesta hybrid, bought as a pre-reg, since November 2021. It went back to the main dealers in January because the touch sensitive locking stopped working. I was told this was due to the 12V...