5th & 6th Generation (2002-2006 & 2007-2011)Toyota Camry Discussion for years: 2002-2006 & 2007-2011
Topics of discussion range from fuel economy, safety, modifications, performance all involving America's favorite family car, the Toyota Camry.
The other day my car wouldn't start. Prior to this, I had the car on(acc) but not running for about 2-2 1/2 hrs. I have never had problems with it not starting after being on for the short period of time. The battery is an everlast from autozone and is only around 2 yrs old.
My question is how many rpms does the car need to run to charge the battery? Will it charge even at idle? I usually can keep my rpms under 2200.
Just tryin to figure out if the battery is going or could it be because of my driving habits.
The other day my car wouldn't start. Prior to this, I had the car on(acc) but not running for about 2-2 1/2 hrs. I have never had problems with it not starting after being on for the short period of time. The battery is an everlast from autozone and is only around 2 yrs old.
My question is how many rpms does the car need to run to charge the battery? Will it charge even at idle? I usually can keep my rpms under 2200.
Just tryin to figure out if the battery is going or could it be because of my driving habits.
It will charge at idle if your alternator/battery are ok. Running the A/C, radio and lights will reduce the charge rate.
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It depends on how fast the alternator spins based on its pulley size and engine speed. The smaller the pulley size, the faster it'll spin and create more power relative to engine speed. There's also the amperage rating, as well. Most Camrys use 80 amp alternators, which at 14v produces 1120 watts. Toyotas are typically in the high 14v range, so the wattage is actually a bit higher.
Generally, to fully charge a battery, you need to drive on the freeway for 20 minutes with a minimum RPM of 3000 without traffic and without any electronic devices turned on inside the car, as well as exterior lighting. So, keep the transmission in 4th if you have a 5 speed auto.
If you're unable to turn off a DRL system, drive 5-10 minutes longer or at a higher engine RPM.
It depends on how fast the alternator spins based on its pulley size and engine speed. The smaller the pulley size, the faster it'll spin and create more power relative to engine speed. There's also the amperage rating, as well. Most Camrys use 80 amp alternators, which at 14v produces 1120 watts. Toyotas are typically in the high 14v range, so the wattage is actually a bit higher.
Generally, to fully charge a battery, you need to drive on the freeway for 20 minutes with a minimum RPM of 3000 without traffic and without any electronic devices turned on inside the car, as well as exterior lighting. So, keep the transmission in 4th if you have a 5 speed auto.
If you're unable to turn off a DRL system, drive 5-10 minutes longer or at a higher engine RPM.
Don't know about most Camrys but the GEN6 have 100 amp alternators....
Don't know about most Camrys but the GEN6 have 100 amp alternators....
Then those would fall under the some category. There are more older Camrys than newer Camrys, hence why I said most. And I really meant to say most Camrys equipped with an automatic transmission. Manual transmission Camrys use a 70 amp alternator before the 6th gen.
There are 120-150 amp alternator options in the SUV variants with the 3MZ and 2GR.
The other day my car wouldn't start. Prior to this, I had the car on(acc) but not running for about 2-2 1/2 hrs. I have never had problems with it not starting after being on for the short period of time. The battery is an everlast from autozone and is only around 2 yrs old.
Just tryin to figure out if the battery is going or could it be because of my driving habits.
Having the battery drain down even once takes months off the overall life of the battery, so you ought to make a mental note that it'll need to be replaced earlier than you anticipated (provided you have no other full drain situations).
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2008 Highlander Base 4WD
2002 Avalon XL
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i appreciate all the info guys, very useful! The issue here is that my normal daily drive involves a 20-30 min drive, sometimes in no traffic and sometimes in decent traffic(BQE for you locals). I keep my rpm's as low as possible because I have noticed a significant increase in mpg by doing so.
Should I do some more acceleration above 2k rpm on my normal drive to make sure I fully charge the battery, or is it more likely because I had a lot of accessories running with the car off.
Take your car to a local auto parts store that does free battery/charging systems tests and have them hook it up.
Your car should have no issues re-starting after a 20-30 minute run. Even if the car sits for long periods of time prior.
__________________ 1992 TOYOTA MR2 - 180k miles * 2003 TOYOTA MR2 Spyder - 87k miles * 2006 SUZUKI SV650s
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Your battery doesn't have the eye on it i'm guessing.
My Gen5 died a few times because of running the radio for long periods of time, after a while it started doing it more and more, until it just wouldn't start anymore. I had to jump start it with my car to get it to the dealer to change the battery. My parents have a 45 min drive to work and back, and once the battery got that bad it didn't charge. If it keeps happening just change it before you get stuck somewhere far from home.
The battery will only charge to a max of a specific amperage regardless of how much amperage is available to it. In other words, if you took a good but nearly flat battery and hooked up power with an amp meter in series, it would immediately draw upwards of 30 amps but quickly drop off to 20 and then about 10, and then slowly decrease over time to a trickle as the battery voltage increased to its capacity. Since the alternator is producing ample amperage at idle for this task, the correct answer to the question is that the battery, if good, should charge to full capacity if the engine is idling, but it will take hours from being completely flat and it will generally not take substantially less time if run at highway speeds. Your best option is to go to Harbor Freight or Pep Boys and get a small charger and let it sit connected over night.
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2007 V6 Camry LE, Built TMMK 27 September 06
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what rpm is required to charge a battery?
And whatever zy and nj said.
Linear Mode
