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Rockville RFC50F v2 50 Farad Car Audio Capacitor, 3-Digit Super Bright Blue LED Voltage Display, Polarity Alerts, Heavy-Duty Terminals, for Car Audio Systems

  • Based on 286 reviews
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Returnable until Jan 31, 2026

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Availability: In Stock.
Fulfilled by Audiosavings

Arrives Saturday, Feb 14
Order within 20 hours and 18 minutes
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Style: 50 Farad


Pattern Name: Car Audio Capacitor


Features

  • HIGH POWER HANDLING: Delivers 50 Farads of capacitance to stabilize voltage and support high-demand amplifiers and subwoofers.
  • REAL-TIME MONITORING: 3-digit super bright blue LED display shows precise operating voltage, accurate to +/-0.1VDC.
  • ADVANCED PROTECTION: Includes reverse polarity warning tones and over/under-voltage alarms at +17.5V and -10V for safer operation.
  • PREMIUM DESIGN: Features a blue illuminated window that pulses to music, black wire mesh cover, and durable platinum-plated bolt-down terminals.
  • COMPACT AND PRECISE: Measures 10.83" x 6.38" x 2.36", with low ESR of 0.015 @120Hz and +/-10% capacitance tolerance for optimal system performance.

Description

The Rockville RFC50F v2 50 Farad Digital Hybrid Car Audio Capacitor is engineered to enhance power stability and sound quality in high-performance car audio systems. With an impressive 50 Farads of capacitance, it delivers rapid energy to your amplifier during peak demand, reducing voltage drops and audio distortion. This capacitor features a 3-digit super bright blue LED display for real-time voltage readings, accurate to +/-0.1VDC. A blue illuminated window flashes in sync with the music, while a black wire mesh cover adds a sleek, durable finish. Built-in IC-controlled circuitry provides over-voltage protection at 17.5V, under-voltage alerts at 10V, and warning tones for incorrect polarity connections. Additional performance specs include an ESR of just 0.015 ohm @ 120Hz (25 degree C) and a capacitance tolerance of +/-10%, ensuring consistent, reliable output. Automatic sleep mode conserves energy during low-volume periods. With dimensions of 10.83" x 6.38" x 2.36", it installs easily and integrates seamlessly into most car audio setups. Whether you're a dedicated audio enthusiast or building a competition-grade system, the RFC50F v2 delivers power, precision, and protection in one rugged and stylish package.

Capacitance: 50 Farad


Brand: Rockville


Material: Aluminum, Plastic


Shape: Round


Equivalent Series Resistance: 0.02 Ohm


Operating Voltage: 50 Volts


Capacitance Tolerance: 10


Maximum Voltage: 50 Volts


Mounting Type: Bolt-Down Mount


Product Dimensions: 6.38"W x 2.56"H


Manufacturer: Rockville


UPC: 819216023990


Item Weight: 4.66 pounds


Item model number: RFC50F v2


Other display features: Wireless


Whats in the box: 1


Date First Available: December 3, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Feb 14

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • ⭐️⭐️⭐️⭐️⭐️ A Beast of a Cap — Keeps Voltage Locked
Rockville RFC50F v2 50 Farad Car Audio Capacitor ⭐️⭐️⭐️⭐️⭐️ A Beast of a Cap — Keeps Voltage Locked If you’re running a real system with high draw, this cap holds it down. I’m using it on a multi-amp setup with 3000W RMS and it absolutely helps stabilize voltage during drops. The digital display is bright, accurate, and looks clean on the rack. Easy to install and clearly makes a difference. If you’re pushing heavy bass, this is a must. ... show more
Reviewed in the United States on July 27, 2025 by David Rule

  • Great deal
Love it! It keeps constant voltage to 2 amps!
Reviewed in the United States on December 13, 2025 by Austin L.

  • Doesn’t work after a month
Purchased this capacitor and installed per instructions and with resister. Seemed to work and turn on but, after a day sitting the capacitor drains my entire battery dead and does not hold a charge if disconnected for a hour. Contacted customer service only to get the run around saying to spend more money and waste more time shipping it back so they can inspect it and if its faulty they would ship a new one and takes about a month. Spend the extra money and get a reputable name brand. ... show more
Reviewed in the United States on October 16, 2025 by Starr

  • Good quality product.
Works as advertised. The dimming of my truck's headlights is significantly less.
Reviewed in the United States on October 16, 2025 by stephen

  • not great...update.....doing the job now
looks nice...thats about it. i got this for extra power..have extra battery etc.....this does very little..def NOT 50 farad, maybe a 1k or 2k system...but the 6k....just a led light! just not effective. upon further review....it was charged incorrctly!!!! have all wiring upgrades. extra battery alt etc....getting volt drop..14.3 to 12.9....added this(charged correctly) 13.9 at the lowest so far!!! so for the money...solid! i got tarampd 5k, 4 5stack 15s...8 8,8 6.5, ...8k total watts....solid ... show more
Reviewed in the United States on May 2, 2025 by Terry H.

  • Big bang 4the buck
Great addition, sounds & depths very much improved, a very impressive & noticeable impact
Reviewed in the United States on November 16, 2025 by JoshuaJones

  • Worked ish
Seemed to work. A little confusing on the instructions. The video the send a link to is for a different one and don’t make a lot of sense.
Reviewed in the United States on March 23, 2025 by Mike Case

  • Miguel
Tengo que decir. Que todo lo que e comprado . Rock ville. Son de la mejor calidad. Muy superior a otras marcas.
Reviewed in the United States on October 3, 2025 by Miguel Arce Cruz

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