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30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Wednesday, Nov 11
At a glance
- Condition
- New
- Style
- 30 Farad
- Pattern
- Blue Voltage Display
- Model
- RFC30F
- Material
- Aluminum, Ceramic, Copper, Plastic
- Shape
- Rectangular
- Operating Voltage
- 27.5 volts
- In the box
- farad capacitormetal mount tubes (2)
- Warranty
- 1 year manufacturer
Features 5
- HIGH-CAPACITY POWER STORAGE:- The Rockville RFC30F delivers 30 farads of capacitance, stabilizing voltage for amplifiers up to 3000 watts, preventing headlight dimming during heavy bass notes.
- PRECISE VOLTAGE MONITORING:- Features a 3-digit LED display showing real-time voltage to +/- 0.1VDC, with over/under-voltage alarms for safe operation between 10-16V DC.
- DYNAMIC BLUE ILLUMINATION:- Blue LED window pulses with music, adding a stylish accent to your car audio setup while maintaining a sleek, modern design with a black wire mesh cover.
- SMART ENERGY MANAGEMENT:- Automatic sleep mode conserves power during low-volume periods, ensuring efficient energy delivery when your system demands it.
- DURABLE AND EASY TO INSTALL:- Platinum-plated terminals ensure secure connections, with a compact 10.91 x 6.38 x 2.56-inch design and included warning tones for reverse polarity.
Description
The RFC30F features a 3-digit super bright digital LED read out which displays the United exact operating voltage to the decimal point. It comes equipped with Heavy Duty bolt down style Platinum Plated terminals which ensure a safe and solid connection.
Specs 21
| Capacitance | 30 farad |
|---|---|
| Brand | Rockville |
| Material | Aluminum, Ceramic, Copper, Plastic |
| Shape | Rectangular |
| Operating Voltage | 27.5 volts |
| Item Shape | Rectangular |
| Maximum Voltage | 27.5 volts |
| Mounting Type | Through-Hole Mount |
| Material Type | Aluminum, Ceramic, Copper, Plastic |
| Item Dimensions W x H | 10.91"W x 2.56"H |
| Brand Name | Rockville |
| Item Highlight | Digital Hybrid, 20V Surge, 3-Digit LED Meter, Over-Voltage Protection, Platinum Bolt-Down Terminals, Low ESR |
| Unit Count | 1 Count |
| Manufacturer | Audiosavings |
| Number of Packs | 1 |
| UPC | 811080025179 |
| Number of Items | 1 |
| Global Trade Identification Number | 79 |
| Item Type Name | Rockville RFC30F 30 Farad Capacitor Blue Voltage Display |
| Model | RFC30F |
| Part Number | RFC30F |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Nov 11
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Ferret for system
So far so good works looks cool lights are blue are using it in my boat. Everything works.
Reviewed in the United States on May 6, 2026 by Amazon Customer
Works good
I like that its not that big and it's not round. I tried others that didn't last. I'm hopeful on this one so far. It's tak3n care of the dimming lights and computer faults.
Reviewed in the United States on December 3, 2023 by Rickey Lutz
Buena compra acorde con lo necesario y exactamente recibido todo lo descrito .
Muy bueno exelente y terminó con el problema del parpadeo de luces cuando utilizaba el bajo a toda la potencia .
Reviewed in the United States on January 9, 2026 by Adrián Vargas Ruiz
No more dimming lights
Very good product. Running about 1000 RMS and lights were starting to dim. Make sure you put the cap as close to your amp as you can. Would recommend to a friend
Reviewed in the United States on January 31, 2019 by Christian
Great product
The capacitor is awesome! Works great. However, The RXD-M5 amp that this was ordered for, is not. And I've not gotten anything from trying to email audio source about it. I've been in constant contact over it since I first installed it because it never was right from the start. So, not really caring for the tech support end of it all, period!
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Reviewed in the United States on April 10, 2019 by Troy L.
Its ok
The voltage display didnt work. it is powering the inverters. If I hold a voltage meter 2 contacts I can see the volts. If I draw a load the volts drop then bounce back up before stabilizing. It will do for now till I find something else.. ports are a little small for my 0 gage but they hold strong.
Reviewed in the United States on November 28, 2025 by 86ed
Perfect piece
Once I got this thing charged it helped tremendously my bass notes don't fall off and now my bass is so much more powerful and it does help on your electrical parts of your car overall definitely a good product now I've only had it for a day or two but so far so good and everything else that I've bought from Rockville has all been exceptionally well made and performed better than most kicker and Rockford stuff I've had for like a quarter of the price so if anything changes I'll update this but so far if it's like any of the rest of my Rockville stuff I don't think there's going to be any issues.
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Reviewed in the United States on May 16, 2017 by Billy D
It does nothing, except flash annoying lights!
It says 40 Farads, which is an insane amount of capacitance, but with 2000 watts of amplifier power, my lights (dash and headlights) dim when the heavy bass hits. Also, when I run it with the floor cover removed from my amp stash, the flashing blue LEDS light up my car at night, which I do not appreciate at all. So all it does is annoy me, and probably drain more energy through the flashing blue cop LEDs. What a wasted of time, money, and precious audio equipment space!
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Reviewed in the United States on May 27, 2020 by Average Consumer