I was told the alternator is bad and the battery is at 25%. Should I replace the battery too?
Its a 2002 Hyundai Santa Fe GLS.
2007-10-24 03:08:00 · 13 answers · asked by Janessa 4 in Cars & Transportation ➔ Maintenance & Repairs
If your battery is the original Hyundai battery, your overdue for a new battery, and I would want one to take the heavy charging load off your new alternator. Batteries don't last longer than 4 or 5 years on average. I had to replace my 2003 Hyundai Elantra battery at the 4 1/2 year mark.
2007-10-24 03:16:57 · answer #1 · answered by bobweb 7 · 1⤊ 2⤋
When you say that the battery is at 25%, I assume that means that it is only 25% charged, due to the alternator failure! Have the battery charged, and load tested. A batttery load test will tell you the ability of the battery to hold a charge! If the battery passes the load test, there is no reason to replace it. If it fails or is marginal, I would replace the battery, especially seeing as winter is coming, and cold weather puts more stress on the battery!
2007-10-24 03:37:50 · answer #2 · answered by fire4511 7 · 3⤊ 0⤋
Check the battery terminals are clean and tight.Recharge the battery (check water levels first),then restart the car and take it for a 20 minute drive (no lights,day time only). It should recharge if revs are over1000. Make sure the alternator dash light is not coming on(if so your alternator is defective or wired incorrectly). If it doesn't recharge,you need a new battery.
2016-04-10 02:19:09 · answer #3 · answered by Anonymous · 0⤊ 0⤋
A battery will give 5-6 years of life if the car has no problems that would strain the battery or you don't strain the battery(by constantly leaving the lights on when the engine is not running, or having a poor starting engine which needs a lot of cranking to get it going, or your charging system is failing(as in your case-the altenator stopped charging up the battery) just driving, drains the battery.
So, when they say 25% left, if you are planning to get thru this winter without a problem, and things are being fixed - go for a new battery. You are in a better position to give jump starts to others.
2007-10-24 03:19:23 · answer #4 · answered by Anonymous · 1⤊ 2⤋
It is not always necessary to replace the battery at the same time as the alternator but if the battery is at 25% it should be replaced as well.
2007-10-24 03:13:55 · answer #5 · answered by Ben H 4 · 2⤊ 2⤋
Chances are if your Alternator was bad it hasn't been fully charging your battery for quite some time.
I would suggest a new battery, the new Alternator could be stressed trying to charge a battery that is that low, and in fact it may never charge the battery 100%.
So yup replace the battery!
2007-10-24 03:17:31 · answer #6 · answered by Truce 4 · 1⤊ 3⤋
Only if the battery fails to charge back up. I would give it a chance, most likely the battery is fine.
2007-10-24 03:12:15 · answer #7 · answered by Twigits 3 · 4⤊ 1⤋
Even if the battery will take a charge, it's likely that it's life has been drastically shortened by the increased stress it's had to endure making up for a bad alternator. I would replace it to avoid any potential frustration.
2007-10-24 03:17:13 · answer #8 · answered by Wonderputz 3 · 2⤊ 3⤋
Maybe not. Just because your alternator went bad doesn't necessarily mean it killed your battery. charge the battery first and if it will take a charge then you are good.
2007-10-24 03:12:34 · answer #9 · answered by Anonymous · 3⤊ 1⤋
for better results you must change it and change the battery terminals too
if the cables are in good condition you can use them but for an optimun performance i recomend change all those things, cables, terminals, alternator and battery
but it a must change battery and alternator and must if the battery is at 25%
2007-10-24 03:19:25 · answer #10 · answered by Anonymous · 1⤊ 2⤋