Ask Honest John

Most recently answered 12v battery questions
Can I have my hybrid hardwired safely with a solar charger to keep 12 volt battery charged as I don't do enough mileage to maintain it. I park on public highway so cannot charge it conventionally and ...
Is it safe to jump-start a hybrid car? My CR-V battery is 7 years old and, although not yet a problem, I wonder if I should keep a set of jump-start leads in the car in case the battery fails without warning.
My Hyundai Kona Electric 12v battery failed after 18 months, leaving the car inaccessible, as all the doors were locked and the "smart key" would not work. The AA fitted a new battery, but isn't this dangerous,...
If a self charging hybrid only does a low mileage mostly on electric power, does this have a bad effect on the mechanicals?
Do mild hybrids suffer the same problems as all other hybrids, not suitable for regular short journeys. Because manufactures are fitting low capacity 12 volt battery and inadequate charging systems, compared...
When charging an electric car does any charging of the car 's 12v battery take place this seems to me a good feature to have as when the car has not been driven for sometime the car battery was flat, the...