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You either have corroded battery terminals (where cables hook on battery)or a bad alternator ...Autozone willtest for free

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Q: Car battery jump starts but won't hold charge?
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Your 2002 mustang will not start without a jump but after it starts everything is fine?

you need a new battery yours does not hold its charge for the cranking amps needed or you have a dead cell in it.


Why won't my Jeep jump start?

Your Jeep probably won't jump start because the battery is not strong enough to hold a charge anymore. You will need to replace the battery. +++ You will need to replace the battery if it won't hold a charge, but given a suitable source vehicle it should still be possible to jump start (NB 'jump' electrically, not tow-start) any car even with a fully flat battery.


How do you charge the battery in a 1998 Audi a6?

The alt will charge it if you can jump it. If it's too dead to jump, you need a battery charger. It may not charge hold a charge if it;s shot though and if not maint free, make sure water level full


How do you charge a battery in dodge challenger 2011 if you cannot get in the trunk?

You can charge or jump the battery from jump start posts under the hood on the passenger side.You can charge or jump the battery from jump start posts under the hood on the passenger side.


Mazda 323 f clicking and wont start battery was disconected to charge?

Its likely either the battery connections (terminals) are dirty, or where they connect is...or the battery while showing a charge is bad when on a load. If it starts with a jump from another car...it's the battery.


When you jump your car and turn it off the car is dead?

Either the alternator is not providing a charge to the battery, or the battery has a dead cell and won't hold a charge. There are auto parts stores (AutoZone, Advance, O'Reilly's) that will check batteries and/or alternators free of charge.


Can you use a jump box to charge a car battery that's not in a car For example have the car battery hooked up to the jump box for a few hours inside my garage Or do I need an actual batt charger?

A jump box will only partially charge the battery. You need a charger to fully charge the battery.


How do you charge the battery of a 1996 Oldsmobile aurora?

Before you try to charge it with a batter charger. take the battery to an autozone or similar to test the batter and see if its still hold a charge. or if you know that the battery is good then jump start it using another car battery with jumper cables. just remember RED to + and Black To -


Why would your car not hold a charge after a jump?

I would assume the battery is completely dead and needs to be replaced, or you jumped it wrong.or its the alternator i think


Why would a 1986 Mustang 5.0 start and run for a while but when you turn it off and try to start it it sounds like the battery is dead and won't start but when you jump it it starts right up?

Battery is dead or the alternator is bad. Have your battery tested at an auto parts store such as pep boys. Chances are your battery will test bad - unable to hold charge.


Can you charge a lawn mower battery from a car battery?

NO You have to many AMPS from a car, you can jump start it butdon't charge it.


How does a battery jump starter work?

A battery jump starter works by taking the charge from another battery, such as in another car, and passing it to the dead battery. When the charge is sufficient in starting the dead battery, it should then start charging itself as the engine runs.