Skip the auto shop - Our mechanics make house calls

Q: Alternators keep dying and killing batteries

asked by on

The faulty alternator in my 2011 Jeep Wrangler wore out the last battery I had. I replaced both and that worked up until recently. The vehicle has about 172,000 miles on it at this point and I obviously need it to be reliable. The battery has been running low on power again so I think I have the same problem. Is there an alternator on the market that will stand up to my use?

Your alternator may be working fine and you just need to replace the dying battery. Most alternators tend to last a lot longer than most batteries.

The factory alternator on your Jeep is more than capable of handling your needs and there is no alternator claiming to last for extra long mileages. An alternator will last longer if the battery and cables are kept in good shape and the electrical load is not exceedingly high on a regular basis.

I suggest having a certified mechanic, such as one from YourMechanic, check out both the battery to properly diagnose the issue. If required they can also replace the alternator for you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Alternators keep dying and killing batteries

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: While driving my battery light came on and off, and as I made a stop to make a left turn. What does this mean?

Hi, thanks for writing in. The most common parts that involve this issue are the battery and the alternator. The starting/charging system should be checked to see if the battery is going bad and getting weak. It can then put...

Q: Would performing a heater core bypass give my AC colder air in my 2001 Jeep Wrangler

Hello. Unfortunately this will not help. If the blend doors under the dash are working fine then the heater core should be completely blocked out when the a/c is on. If the system is functioning properly and the system pressures...

Q: I' trying to start my vehicle and it made a loud clacking noise and the battery is drained

Hello. If the vehicle produced a clicking clacking sound when the key was turned then it may be possible that the battery or starter are the issue. A faulty, or low battery will cause the starter to click if it...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...