1.0 Farad Capacitor with Digital Red Display

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  • 1.0 Farad Power Capacitor
  • Perfect for systems up to 1000W
  • Red digital voltage display
  • Audible warning indicators
  • Includes clear mounting brackets
  • Automatic shutoff protection
  • 10-16 Volts DC
  • Accepts any gauge of wire with ring terminals
  • Dimensions: 10-1/2"L x 4-1/2"W x 3-1/2"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Capacitor Specifications

Capacitance (farads)
Capacitors are rated in farads, and at times microfarads or millionths of a farad. The more farads the capacitor is rated at, the more electrical charge (and wattage) the capacitor will hold. Capacitance is defined as the property of storing an electrical charge between two separate conductors.
1 farads
LCD Meter Display
Displays the current voltage and/or other specification on an LCD readout.
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
Any Gauge with use of Ring Terminal AWG
Maximum Output Gauge Size
This number refers to the maximum size of wire that will fit into the output connector(s) of the capacitor, battery terminal, or any other connector with an wire output.
Any Gauge with use of Ring Terminal AWG
Built-In Distribution Block
A built-in distribution block simply means that the item includes a distribution block. The built-in distribution block will split the single power input into a multiple power output.
Primary Color
This is the main color of the item.
Secondary Color
A color that compliments the main color of the product.
This is the color of the illuminated LED lights on the unit.
The width of the item from left to right (side-to-side) measured in inches.
The height of the item, measured from top to bottom, in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

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Average Attribution Rating

Accessory Tools and Products

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5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and blue insulation.

Your Price $15.99

Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

Your Price $2.99

Browse 10 questions and 73 answers
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Why did you choose this?
Sonic Electronix Store
Bc it will work perfect for my car.... just what i need
Kenny S on Jun 19, 2017
I needed to protect my system from frying components and messing up the general electric system in my car and to keep my sub sounding crisp and clean with enough juice to support it
William Lake J on Mar 18, 2017
Me gusto
Runy C on Mar 23, 2017
Car stereo system cutting out at at higher volumes,this should fix it ,battery alone can't push the power out needed for the end I am trying to push
Douglas S on Mar 2, 2017
Can someone give me a clearer explanation of how to use the charge card that comes with this device? I've seen capacitor how-tos all over the internet, but the charge cards are always different than this one. Considering the potential for explosive side effects, the instructions that come with the product are laughably bad. They say to hold the card between the positive (battery) and positive (cap). I just need to know which points on the card need to be connected.
CJ1234 on Oct 10, 2016
· Add Answer · I Have This Question Too (7)
I installed the capacitor. But when the bass hits hard the blue light blinks. Is this normal? I have a 900w Pioneer amp. My friend has the exact same capacitor and the light doesn't blink but his amp is smaller too. I checked all the connections and everything is fine. Is it normal for the light to blink?
A shopper on Mar 11, 2015
Best Answer: Well the only time I see the blue light blink is when I haven't driven my car for a few days and the voltage drops to I believe under 10volts? Not sure the exact voltage it actually blinks. Anyways, when the car is running no matter how hard my system hits the voltage on the CAP never drops below 12v. It fluctuates from any 12v to around 14.4v.
I'm running the Boss CE2505 5-ch amp rated at 2500W but, my setup is 150W x 4 and 250W on a single 10" custom subwoofer.
If you haven't properly charged the capacitor during the first install could be your problem. I'd suggest discharging the capacitor properly then re-charge it following the proper procedure. If that doesn't help then your system needs a more powerful CAP. Hope this helps.
Reply · Report · KARIM T on Mar 18, 2015
· Add Answer · I Have This Question Too (0)
Hi guys out their, i tried to charge my capacitor and i am not sure exactly what im doing. Can someone give me a super clear explanation on how to charge this thing? Sonic electonix says to charge them in parallel and i charged mine in series like belva said with the charge tool and like, did not turn out to well. Please help. This is the first i have dealt with a capacitor. Thanks for your help.
A shopper on Apr 13, 2017
Best Answer: With battery connected disconnect the power side of capacitor and place the resistor between the wire you disconnected and the cap. Wear gloves because it can get hot. The cap should show the amps increasing. When your at 14V your charged. Works every time for me. If you have the fancy resistor with the red light and a positive and negative wire. Just screw down the card on the positive terminal where you disconnected and touch the disconnected terminal to the small wire. As long as your already grounded the cap your fine.
Reply · Report · Jeff N on Apr 13, 2017
· Add Answer · I Have This Question Too (0)
Does this capacitor come with a charge tool? Or at least a resistor to charge it with?
Nathan C on Apr 7, 2017
Best Answer: Yes, but it's pretty shady, just a small light with exposed metal connectors on each end. To charge I have a fuze between the battery and capacitor so I take out the fuse and put the the light in its place, wait for the light to die, remove it and replace the fuze.
Reply · Report · TJ W on Apr 7, 2017
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Can I use the same ground mount for the cap wire and amp wire?
A shopper on Oct 6, 2015
Best Answer: Yes Ive done it but for improvement try using a ground splitter i forgot what its called but you connect both your grounds to it so there would only be one lead coming out and try making that one lead thicker like me im using 1/0 gauge on amp and cap and the grounded wire is a 0gauge
Reply · Report · eduardo a on Oct 6, 2015
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What voltage should the cap be shown when the car is running? Mine shown no more than 12.5 - 12.7 volt, comparing to my older capacitor, which shown 14 - 14.3v when the car is running.
Danny L on Apr 8, 2017
Best Answer: Should be fluctuating around 14 when car is ru nning. If not, its probably not connected properly
Reply · Report · JAMES C on Apr 8, 2017
· Add Answer · I Have This Question Too (0)
Would I be able to run an 8 gauge wire to this and then run a 4 gauge from the cap to my amp?
Gerad G on Oct 6, 2015
Best Answer: Yes you should be as long as the ring terminals for both the 8 gauge and the 4 gauge fit snuggly on the cap. My setup is 4g to and from the cap but I don't think it would matter with your setup.
Reply · Report · KARIM T on Oct 6, 2015
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What is the ring terminal diameter for the capasitor? 5/16, 3/8, 1/4... I know the cable is 8 gauge but not the ring diameter that fix. Thank you
A shopper on Nov 3, 2014
Best Answer: I went with a 5/16 opening ring terminal. Fits snugly but slight wiggle room. Not an issue once u tighten up the screw. Secure and tight and haven't had any issues for over 6 months. Hope this helps.
Reply · Report · KARIM T on Nov 3, 2014
· Add Answer · I Have This Question Too (0)
Does it mean 1000w RMS? or peak?
timothy on Dec 6, 2015
Best Answer: It means RMS
Reply · Report · Isaac L on Dec 6, 2015
· Add Answer · I Have This Question Too (0)

Product Summary


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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Belva BB1D-OPEN BOX

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1.0 Farad Capacitor with Digital Red Display


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