Car Battery Charger | Can I re-charge car battery while its still connected in car?

9 Responses to “Can I re-charge car battery while its still connected in car?”

1. trucker dad

   yes will not hurt anything

2. pedro7of9

   ive done it with no ill effects

3. kevin d

   yes just make sure you hook up cables right

4. desert camel

   yes,it will cause no probs at all…BUT,If you putting the bonnet down make sure the positive battery charger terminal doesn’t touch earth/cars body…

5. bobweb

   Why take any chance at all with your car’s electrical system? Anyone can disconnect the black ground cable to the battery before hooking up the charger, so why not do it? The connectors should be removed anyways for a good cleaning as in the video below. A battery charger is not designed to provide the same charging conditions as your car’s alternator. Jump starting a car can also cause damage under some conditions. Never perform arc welding on a car without disconnecting the battery whether the ignition is on or off.

   http://www.ehow.com/how_512_replace-car-battery.html

6. Tan Man

   The car does it all the time
   .
   You are just using a different source to do it
   .
   Remember it is only the battery that is receiving the charge
   .
   The cars electrical system is turned off
   .
   And the battery is always ready to put 100% of what it has into any wire of the car already

7. Big Daddy

   yes you can – you may have a little problem if you have a car alarm and don’t forget that the clock will be running – the two will not be using much juice but will be requiring some – I had to disconnect the pos cable only and left the battery in the car – you may want to take this opportunity to clean the post and cables

8. Tiffany_loves_diamonds

   My battery is really dead. How long will this charge take? Can I try to start my car in a couple of hours with the battery charger still connected? Thanks, Tiff

9. chucksterelmo

   yes

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