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How long will a car battery last if charged manually at home?

Asking for a friend: my friend drives a Citroën c8 her alternator isnt working and so car is now dead , she has a battery charger and is manually charging the battery , but would like to know  if the car would run as normal if charging it worked and puts it back in the car but also how long would it run for ? Could she do a normal days driving basically ? She uses her car for her care job and just isn't able to get the alternator fixed just yet but for something just for now will this method work? 

Update:

To anonymous - please learn to read properly , i was asking for a FRIEND! I cant even drive 🤷‍♀️, also I'm not American so wouldn't spend dollars ! 

3 Answers

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  • Barry
    Lv 6
    7 months ago
    Favorite Answer

    Far too risky. I doubt the battery would last much more than an hour even if it's a quality battery. Even less with a couple of restarts.

  • Anonymous
    7 months ago

    There is no single answer to that question. How far is a 'normal day's driving'? Personally I would not like to risk too many miles, especially if I had to stop and start the engine a few times.

  • Anonymous
    7 months ago

    Change the f*cking alternator yourself. That takes like 1 hour and they cost like 100 dollars at autozone. It would only run for a few minutes probably. The sparks, lights, all the sensors relaying  information to the computer, that will all be consuming electricity which isnt going to be replaced. Battery would go dead quickly  and a tow truck would cost more than an alternator.

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