The 8 Best 4000 Farad Capacitors (2023 reviews)

The pyle 4000 farad capacitor is specially designed for your daily purpose and has plenty of most useful features. This pyle capacitor does a tremendous job with adding extra bass, and keeping your battery charged at all times. It comes with a small bag of hardware and a resistor for your initial charge. It is best for 750/1000 true watts. The included proprietary bolt/terminal system is very weak but also quite easily replaced. It can save your battery.

The digital volt gauge works good and looks cool in blue. It does come with everything for the install and mount. It is good if you want to keep your system low powered.

Why We Like This:

Awesome replacement for a dead capacitor
Has built in over/under voltage alarm as well
Keeps juice flowing to both amps
Produce the adequate power but very fragile terminals

Best For systems: stinger 4000 Farad Capacitor

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We would, of course, be remiss if we didn't mention stinger 4000 farad capacitor for regular usage. It does a great job providing reserve power/amp consistency while preserving secondary battery draw when the engine is not running. It comes with a small pcbboard LED green and red resistor to charge the capacitor. This is a reserve power boost, if you are having issues with headlights/tail lights/etc dimming. This is the wire that you'll use to charge the capacitor with the resistor.

There is a screen and you can dial it in with a small flathead. The bass note is that the capacitor recharges that space instantly where the battery would take about. It comes with a charge/discharge card.

Why We Like This:

Takes the drain off 2nd batt when engine off
Definately helps to keep battery topped
You can get more stable and safe while you enjoy your music

Best For sub: NVX 4000 Farad Capacitor

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If you often find yourself scrambling for convenient and suitable capacitor, nvx 4000 farad capacitor is your end point. It has more electrical conductors than other competitors. It allows to handle any stero system easily up to 1200 watts of power output. It includes a mounting bracket for a secure and easy installation.

Why We Like This:

Increases the peak power of your amp
New and hot release

Best For Car Battery: Power Acoustik 4000 Farad Capacitor

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If you often find yourself scrambling for convenient and suitable capacitor, power acoustik 4000 farad capacitor should be your first option for buying. A power cap is designed to maintain voltage not to be used as a Power source. This Farad cap will help tremendously with giving your amps what they crave instantaneous high current spikes up to 14 or more volts. It provides sufficient juice to all components and it's not going to prevent dim lighting. One of these can handle up to 5500 watts easy as long as you charge it properly. It works and looks pretty good and installs nicely.

It has 30 amp hours plus looks really nice. If ur looking for bigger low notes this will help alot, if ur looking for your lights to stop dimming this will help a little bit. It is designed to have a banging system in it so that 14.7 volts is not going to stay steady to your amp and that is where a power cap is used.

Why We Like This:

Nice to look at has an easy read display
Great product for a music equipment
Adds that little boost of power at start up

Best For Price: Tomoral 4000 Farad Capacitor

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While it is not a testament to it's reliability in any way, it has the weight and solid feel of an America made capacitor, so hopefully this is a good sign of a capacitor. This replacement capacitor is very common and will replace many failed units.

While this capacitor is a start capacitor, the value of a start capacitor is not as critical as a run capacitor. The indentations at the rear of the capacitor are a common way to mount the capacitor. The start capacitor and the run capacitor will make the motor generate an initial rotating magnetic field to help the motor start. It comes with several quality gold-plated spade jacks to be crimped on the connecting wires if needed, however, most replacement scenarios will already have them attached to the wires.

Why We Like This:

Replaces 110vac to 250 vac capacitors
Lot of satisfied buyers

Best With Battery: Rockville 4000 Farad Capacitor

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We would, of course, be remiss if we didn't mention rockville 4000 farad capacitor for daily purpose. This professional grade capacitor is built to handle even the most power hungry amplifiers delivering a surge of up to 20 volts of power when needed. It features a 3-digit super bright digital led read out which displays the unit’s exact operating voltage to the decimal point. An automatic sleep feature helps the capacitor reserve power during lulls in volume levels, delivering it only as needed.

It comes equipped with heavy duty bolt down style platinum plated terminals which ensure a safe and solid connection. The Over-voltage protection circuit automatically alarms when the voltage above 17.5V or under 10V. The Terminal for the remote wire in the cap is big enough where you can put another way in it to run to your amp too. It is actually "50" farad and comes with adapters to so anything from 8g to.

Why We Like This:

Keeps power from draining back to the battery
Blue illuminated window with light that blinks to the beat of the music
Automatic sleep status when volume is low

Best For Amp: Audiopipe 4000 Farad Capacitor

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The audiopipe 4000 farad capacitor's high-end materials makes sure that it ages well with use.

Why We Like This:

New and hot release
Delivers what they promise

Best For stereo: stinger Select 4000 Farad Capacitor

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We know from years of feedback from readers, customers and amazon sellers, what most people want in a convenient and appropriate capacitor. The stinger select 4000 farad capacitor is exactly that - it's a simple capacitor that hits all the right notes. The best thing to get is an adequate alternator with a higher amperage. It comes with two clear plastic mounting brackets shaped like a U. The integrated digital display informs you of system status and performance. It includes the needed resistor, which is a small light bulb. It is good for systems up to 2000 watts. It is an easy install and it holds a charge even when the bass hits. It will only power up when it’s reserve has been used and needs to draw from the battery. The cap makes the amp sound alot better.

Why We Like This:

Good digital capacitor, easy to install, work great
One of the new comers and featured product