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Do i need a High Output Alternator?

High Amp Alternator

High Output Alternators provide the current you’ll need for LOUD car audio
To avoid the dreaded red light of despair in the suddenly silent night. You will need to upgrade your electrical charging system. High Output Alternators provide amperage that your stock alternator cannot produce.

If the Big Three Wiring Upgrade failed to alleviate your electrical issues in your car or truck. Upgrading the alternator might be your next step toward a high performing car audio system.

Did increasing the current flow through the system solve problems like headlight dimming or did it make them worse?

This is because your amplifier is trying to draw more amperage than your stock electrical system can create.

Boosting the flow of current in the vehicle will only increase the problem if the charging system can’t keep up.
This means your headlight dimming could worsen after upgrading your electrical charging systems wiring. That is if the alternator cannot supply adequate power for both your cars electrical charging system and stereo.

Continue reading Do i need a High Output Alternator?

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High Output Alternator Battery Charging and Maintenance

NOCO Genius alternator

Most car batteries do not get enough charge to keep them healthy and operating at peak performance. It might seem like a chore or even an inconvenience, but regularly charging your car battery can go a long way with a battery charger along with your Js Alternators High Output Alternator.

The problem is that we do not drive our vehicles enough to recharge the battery fully. And when you factor the accessory load and its increasing demands on the battery system, it all contributes to the battery not being sufficiently charged.
There are many benefits to today’s lead-acid car battery, but its biggest weakness is its inability not to deteriorate when left undercharged. Batteries consistently kept at a low charge, slowly decline in performance due to a phenomenon called sulfation.

Without getting too technical, it reduces the active material – the stuff responsible for performance – inside the battery. The loss of active material is the reduction of the battery’s amp-hour capacity. In other words, as the battery continues to lose its active material, it essentially becomes a smaller capacity battery. And as the battery gets smaller and smaller, so does its ability to start an engine.

To think about it another way, imagine you have a new car battery rated at cranking amperage of 1000-amps. Now imagine the impact on starting if reduced to say, 500-amps. As a battery loses capacity – its active material – it loses its ability to deliver power.

Now, this is a simplistic example. Of course, there are other factors to consider when it comes to battery life and performance, such as ambient temperatures or the number of cycles. But keeping your battery at full charge is a sure-fire way to maximize performance.
@noco battery maintenance @JsAlternators High Amp Alternators Your #1 Source for High Output Alternators
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Need help finding shorter belt for your JsAlternators High Output Alternator?

Need help finding the required shorter belt for your JsAlternators High Amp Alternator?
Check out Dayco for vehicle belt length lookup.

Vehicle belt lookup:

belt part number link:

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Installation Instructions


High Amp Alternator Installation Manual
Safety tips:
-Wear eye protection
-Remove jewelry or any loose items
-Allow car to fully cool before starting installation

Steps to installing alternator:
*Batteries must be fully charged before installation.
1. Make sure vehicle is off and engine is cool.
2. Disconnect the negative cable from the battery/batteries.
3. Disconnect all other wiring from the alternator.
4. Remove the belt (note the belt routing before removing).
5. Remove the bracket bolts and original alternator.
6. Mount the new alternator. In general, the original bolts will be used.
7. Inspect he belt and replace if there are any signs of wear. We suggest you replace the belt with a .5 to 1-inch shorter belt when installing a high output alternator. Install the belt.
Make sure routing is correct and the belt is aligned to all pulley grooves.

Continue reading Installation Instructions

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Big 3 Wiring Upgrade Kits

Big3 Upgrade

Our Big3 Wiring kits have more Copper than any other manufacturer. Period.

True 1/0 Pure Copper Big 3 Wiring Upgrade kit
1/0 Pure Copper cable.
46″ Positive, 34″ Ground, 32″ Ground
All cables include copper lugs crimped & heat shrink.

Big3 is required for all high amp and high output alternators.
+$89.00 Your #1 Source for High Output Alternators??.

Receive a Quote






Contact Us


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YinLong Lithium Cells FAQ

YinLong Lithium

This is a re-share on a write up previously made regarding these cells. With yinlong cells being so popular I figured it was worth a share again.

1. What can each bank handle?
Each bank is rated for 4,000 watts on music. *All ratings are made with no input amperage*

2. What does each “bank” consist of?
6 cells in series equals 1 12v bank. Each bank can be charged from 13.8 to 16.1 safely.

3. What should I charge these to?
We suggest you running these lithiums at 16.0 or less. Any higher will reduce lifespan.

4. Do I need a balancer for my bank?
I definitely recommend a balancer. However, I break my banks apart every 3 months and let them sit in parallel over a day or 2 to balance back out and do not use a balancer.

5. Can I run these with other batteries?
We suggest running Yinglong without any agms or lead acid batteries installed in line. Agms or other conventional type batteries tend to pull down the lithium and will reduce its output.

6. What type of size and wire should I use with a bank of Yinglongs?
We suggest Atleast 1 2/0 OFC ground correctly installed from this bank to a suitable ground location. More than that is always preferred. CCA wire is not recommended.

7. How do I charge this bank?
We recommend charging your lithium battery with a correct lithium charger. However, many charge these with a regular charger and have no issues.

8. Can I run a bank of Yinglongs with other lithium battieres?
We do not suggest mixing lithium chemistries.

9. Do Yinglong banks run fine with ultracaps?
Yes. Yinglongs run amazing with ultracaps, we’ve tested it and it’s beautiful.

10. When should I balance my yinglong cells?
We recommend balancing before assembly. If not using a balancer, break them apart periodically to balance them all in parallel. However, a active balancer is much easier.

11. How do I connect these cells together to make a bank?
1/4” thick links or thicker are recommended for straps between cells.

12. What are the specs of these Yinglong banks?
These are rated for 10c continuous. 30,000 rate cycle life.

13. What type of battery is this?
Yinglongs are Lithium Titanite, They accept charge much faster than other lithiums on the market, and are extremely safe.

14. Can I run these under the hood?
We do not recommend you run these under the hood, as they do not like heat.

15. Do these like being cold like my AGMs?
No. Lithium actually does not perform as well in the cold. It has to do with the anode and the cathode and how they pass through. They will perform fine in it, just not as strong as they would in 50+ weather.

16. Can these replace a normal car battery?
Yes, these can replace a normal car battery and can start a car no problem.

17. What type of wire should I use with them?
We recommend 1/0 cable minimum. The more the better.

18. How do these make a battery?
6 cells wired in series (each cell having a 2.3 nominal charge) equals 13.8. Once in series, you will have a + on one side and a – on the other end. If the cells are fully charged and they are assembled correctly, you should see around 13.8 resting.

YinLong Lithium

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JsAlternators High Output Alternator Help Links

Here are some helpful links to assist you with your installation.
Please read, as these links will answer almost all of your questions.

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Need help finding shorter belt for your JsAlternators High Output Alternator?

Need help finding shorter belt for your JsAlternators High Amp Alternator?
Check out Dayco for vehicle belt length lookup.

Vehicle belt lookup:

belt part number link:

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Testimonials directly from those who run JsAlternators.

This thing works GREAT!!! I’m glad I chose to do business with your company.. Your PRODUCT is top notch and the same goes for your customer service! THANK YOU for all your help from getting me the right alternator to answering a few technical questions I had.. KEEP UP THE AWESOME WORK – Michael Melissa Crum

“Outstanding – high quality, high amperage alternators with equally impressive warranty and customer service. I have no reason to look elsewhere. JS for the Win!”
Robert Bo G.

“I have ran JS Alts for 4 years, they are very dependable strong Alts! I’ve broken several world records and won several world championships with them! Customer service is excellent also!”
Joe P.

“JS has been great!! They deliver fast build time, quick shipping, and great customer service. I will be a lifelong JS customer, that’s for sure! ”
Austin S.

“I have been using JS Alternators for 5 years now and I have never had a company that stands so firm behind their product. I will also add that I never had an alt fail on me in all 5 years of using their product. The owner stands behind his product and is a true professional when dealing with him.”
David S.

“Awesome product. Keeps my voltage on point. I recommend to everyone to buy with JS. Also has great customer service !”
Ryan C.

“Js Alternators has great customer service. Any questions I have about wiring they answer in a quick and timely fashion. I run their alternators in my daily vehicles and competition vehicles!”
William W.

“Hmm I have a lot to say, but to sum it up – JS has an unbelievable level of customer service that goes above and beyond whats expected. The cost and level of performance is unbeatable! And he has a HOT girlfriend, haha!!”
Johnny S.

“Customer Service is “TOP NOTCH!” Great company to deal with, if you’re looking for a high power alternator look no further!”
Jonathon S.

“Best price, best customer service, best product. Its a WIN, WIN, WIN all the way around!”
Brian I.

“Wouldn’t go any other route in my builds. Great customer service to match a great product!”

“Your best bet for high performance and top quality alternators!”
Rodyney Z.

“You guys have the best alternators I have ever used! I’m pumped, I just got my second alternator in the mail today. JS Alternators are the real deal people! Fast service, too!”
Curtis S.

“My cars lights no longer dim and over 3000 watts in the system, it’s fantastic! I’m just honestly grateful for such spectacular service and products. Thanks JS Alternators.”
Greg D.

“Fantastic service, I must say! Awesome power at quite an affordable cost! Good stuff indeed. I will be buying again!”
Damon V.

“I got an alternator from Js Alternators for my Nissan – since then my sound system is pumping, there is more consistency to my operation and I have you guys to thank for that. I’m blown away by their awesome service too! I recommend JS Alternators anytime, any day!”
Lenny T.

“I normally don’t bother myself with going on to leave feedback comments on goods purchased but I have to make an exception in this case. I ordered a 240 amp alternator sometime last year. My voltage has been steady above 14 volts since upgrading. It is one of the best improvements I have done for my car.”
Stanley A.

“I recently installed two of your 320 amp alternators on my Tahoe and a 240 amp on my Toyota. It’s amazing the clear cut power difference I’ve observed! Thank you for your hard work and quality products! I’m sold and highly recommend your product!”
Hugh C.

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Helpful info from @caraudiofab
HOW DO I WIRE MY SUBS? This has got to be one of the most common questions! If you are asking that after you already have your sub(s) and amp(s) you may have already made a mistake!

For those that may be new (we all were at one point) it is very important to properly match the impedance of the subwoofers to the impedance value you intend to use on your amplifier.

The math for these calculations is rather simple, but I do find that people still have trouble visualizing what the wiring should look like, especially once you start combining both series and parallel, so I wanted to share something cool with you guys from show sponsor Crutchfield that makes understanding the wiring much more simple.

Crutchfield has a tech article that allows you to enter how many subwoofers you intend to use, minimum impedance of your amplifier (which is found in the specs) and see different wiring combinations. To find this article use the clickable link in my bio and search for “Subwoofer wiring diagrams”.

Again, I know for many of us this is the entry level basics, but many newcomers are reaching out asking questions every day and I want to be sure we can help them out too. Today I just uploaded a new video on “Subwoofer Basics”, so be sure to check it out!

In the meantime if you would like to check out more Crutchfield tech articles, and research your next build, along with get a special offer for CAF fans be sure to check out show sponsor Crutchfield here:

Thanks for tuning in!

#caraudio #caraudiofab #caraudiofabrication #subwoofer #subwooferbox #audio #bass #basshead #custom #customfab #fabrication #fabricationnation #fabnation #msfabarmy #therealcaraudiofab #caffablab #caf