Alternators
Car Batteries

If your battery does not hold a charge do you need a new battery or alternator?

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2005-09-04 03:55:31
2005-09-04 03:55:31

Probably alternater if the battery is less than 5 years old, may be the battery, may be both, may be neither.

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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.

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if its a new battery then you need to replace your alternator. It basically recharges your battery while the vehicle is running.

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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.

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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

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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.

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The alternator went bad. You need a new one

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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.

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Pull the tops of the battery off and pour sterilized water in he open ports. Then charge the battery as normal. If it doesn't hold the charge then you need to replace the battery.

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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.

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hey, this is a easy answer? (NO)! why would you time it?? all it does is charge the battery!

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Once the engine is running it mechanically turns an alternator. The alternator generates a current which powers the motorcycle and also recharges the battery.When removed from the motorcycle the battery will need to be recharged using a specialist battery charger which plugs into household mains.

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If you have no battery acid in the battery yes it can no longer hold or maybe hold for very little time hold charge inside of the battery You need battery acid to keep the cells charged and not to be dryed out. Good question

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This particular battery is advertised as being very long-lived. If you are having problems getting it to hold a charge, it may be faulty and need to be replaced.

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If the alternator is bad the car will still start. You just need a fully charged battery. Once running then you can check the charge rate from the battery with a volt meter.

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Order of likelihood: 1. Alternator 2. Voltage regulator (probably built into the alternator 3. Battery 4. Wiring and/or connections in charging system. Visit a major chain auto parts dealer and they will diagnose the problem free of charge,. If you need and buy a new battery, they will install it at no additioal charge.

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Presuming you've got and automatic gearbox: To be able to engage neutral there needs to be power from the battery. So either jump start the car or charge the battery, but you need to find out why the battery died in the first place. If you left lights on something like that then charge the battery by taking it for a long drive. If the battery goes flat again after that then there may be a problem with your alternator or the battery won't hold a charge, get the battery tested and go from there

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=== === Some types of electrical shorts do cause the battery to discharge. But usually a bad alternator just does not charge the battery. Or does not put a large enough charge back into the battery. This causes the battery to discharge when you start and run the motor. The spark plugs and other things need electricity that would usually come from the alternator is now coming from your battery. If your bad alternator is not recharging the new battery, the battery will soon fail to start or run your vehicle. You need to have your alternator tested. It should be putting out at least 12 volts, usually around 13 to 15 volts.

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Alternator Checked "Good," But Battery Won't "Hold" ChargeThis situation suggest one of two causes, although there could be other explanations.The battery is nearing the end of it's useful life [almost worn out], or...There is some kind of fault in the vehicle's electrical circuits that draws a lot of battery power even when the ignition is turned off.You need to have a qualified automotive electrical Technician troubleshoot the entire wiring system of your vehicle, identify the defect, and properly repair it.

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Sounds like you need a battery. Use a digital multimeter and when the car is running check the voltage at the battery to make sure you have over 13 volts. This indicates the alternator is charging. If the battery is bad the alternator should be charging over 13 volts easily.

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If you replaced the battery with a brand new one, then no. The battery comes from the store with a fuul charge. If it didn't come charged up, then you have bought a defective battery.

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you need to have your charging system tested. also check the battery it may be bad.

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Immediately disconnect cables but leave car running for at least fifteen minutes


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