Jump a battery that's not in a car?

Question

Hi - for a number of uninteresting reasons I need to jump a fully discharged battery that's outside the car (JUST the battery). Is there any problem/danger in "jumpstarting" the battery with another car, enough so that I can hook it up to a charger (charger won't charge fully discharged batteries)?

Answer 1

No it wont hurt anything , You could start the car up with the good battery, then take it out with the car still running and put the discharged battery in the car and let it run to recharge the battery back up.

Answer 2

You must mean charge, not jump. To jump start a car is to give it just enough juice to start, so that the alternator can charge it. You can get a battery charger that plugs into the wall, but a completely dead battery isn't gonna hold a charge for very long.

Answer 3

Take to a Kragen or Pep Boys and let them charge it. You cannot jump a charge into a dead ( or nearly dead) battery.

Answer 4

you must have a smart charger (a pain sometimes lol )

i have done this before if the batter will take a charge once it will turn the charger on to charge it

i have just put the jumper cables to a good battery and the dead battery and charged two battery at once

not good on the charger because it will charge for a lot longer

and  might over heat the charger

but if you charge it for 2 or 3 hours at 10 amps it should be good enough to charge it by it self

not the right way to do things but just might work

my two cents  

Answer 5

no problem at all

Answer 6

Automatic chargers will not charge a completely dead battery, but a regular car charger without all the fancy electronics will.

Lead acid batts when fully discharged will sit on a charger for a half hour or so, THEN it will start taking a charge and use the full amps available from the charger...

Then it will slowly start reducing the number of amps as it gets closer and closer to "fully charged". the graph looks like this, AND keep in mind this graph shows only an 80% depth of disharge...

http://www.chemie.uni-regensburg.de/Orga...

I charged a set of batts from a lowrider that was stolen then returned..(stupid guys just played but didnt know c**p about charging batts...IGNORANCE!) anyway it took 2 days to charge each with a regular batt charger.

Again they will show nothing for the first half hour to 2 or 3 hours, THEN they will stat charging. If an automatic charger does put out an initial voltage, they should kick in ion that time and start charging.

Answer 7

Yes, you could connect a charged battery do a discharged battery and charge it. Just be careful to connect the electrical cables properly. There is a lot of energy stored in those batteries and don't fool with them if you aren't familiar with electricity. About your battery charger, I have had a problem like you describe several times with several different chargers. The charger will make a click and quit charging due to an overload condition leave it alone and it will cool and should start charging again ,after several of these cycles the battery will become a tiny bit charged and the charger will stay on. The instructions on my  charger's recommended this method.