Ask Honest John

Most recently answered battery drain questions
I have a BMW X3 MHEV Hybrid, 2021 model. I am planning to be away for 4 weeks. Is it okay to leave it on the drive unused for 4 weeks? Will it drain the battery?
I recently purchased a USB adaptor that plugs into the cigarette lighter position. The adaptor has a digital display to show charging status. With the ignition switched off the digital display is still...
I am considering purchasing a new Lexus NX 450+ which I expect to keep for several years. If I maximise the use of the PHEV battery, it occurs to me that PHEV batteries are likely to be more highly...
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...
 

Value my car

Save £75 on Warranty using code HJ75

with MotorEasy

Get a warranty quote

Save 12% on GAP Insurance

Use HJ21 to save on an ALA policy

See offer