Probably alternater if the battery is less than 5 years old, may be the battery, may be both, may be neither.
if its a new battery then you need to replace your alternator. It basically recharges your battery while the vehicle is running.
A low battery charge is a sign of failing battery or charging system. most batteries last 4-5 years then need replacement. If your battery will not hold a charge have your alternator checked. most auto part stores will test your alternator for free.
you need the alternator to charge the battery with no alternator when the battery drops to about 10 volts car will not run at all.
Charge and load test battery- it may be not able to take a charge and need to be replaced You may a have blown fuseable link preventing alternator from charging battery
your alternator is not charging your battery..u need to get a new alternator
If the alternator is good and the battery does not charge, then the battery may be bad. There could be problem with the electronics. You will need to take it to a place where they sell batteries. They have equipment to check out the battery and the wiring.
Generally, no. If you ran the car after the alternator died (which runs down the battery), you may need to trickle-charge the battery for a half-hour or so to bring it back up to a full charge, but most of the time the battery will not need to be replaced.
Battery may have a dead cell and need replacing.
The alternator went bad. You need a new one
If your battery was dead and you jumped it to get it started and the gauge shows your not charging you need to replace the alternator.
It is best to drive home and put a battery charger on the battery and let it fully charge. Letting it charge with the alternator puts a strain on the alternator and should be avoided if possible. But if you have no charger then you will need to let the engine run for around 30 minutes to charge the battery enough so that it will start the next morning. It will take a couple of hours of driving to fully charge the battery.
hey, this is a easy answer? (NO)! why would you time it?? all it does is charge the battery!