8 Farad Digital Hybrid Capacitor with Blue Illumination

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  • 8 Farad Digital Hybrid Capacitor with Blue Illumination
  • Product is Open Box
    • Previously Installed
  • 3-Digit, super bright LED voltage meter
  • Voltage measure accurate to +/- 0.1VDC
  • Blue illuminated window with light following played music
  • Automatic sleep status when volume is low or there is no voltage variation present
  • Warning tones for reverse polarity connection, over voltage (>17VDC), or low battery voltage (<10VDC)
  • Working voltage: 16VDC
  • Surge voltage: 20VDC
  • ESR (Equivalent Series Resistance): 0.015 ohm @ 120Hz, 25°C
  • Capacitance tolerance: +/- 10%
  • Dimensions: 9-1/8"L x 5-1/2"W x 2-1/2"H
  • 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.
8 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.

Specials with this Item

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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

Accessories added

NVX Precut Power/Ground Wire (1/0 AWG)

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

Your Price $22.99


20 Ft Pre-Cut Piece of 1/0 Gauge EnvyFlex Power or Ground Wire

Your Price $89.99

Browse 3 questions and 8 answers
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Why did you choose this?
Sonic Electronix Store
Boss always came through​ for me , and cap was a definite answer to my truck.
SALVATORE P on Mar 16, 2017
My headlights dimmed and my amp overheated this should fix my probs
clinton t on Oct 7, 2016
My daughter's car audio system
Tamie T on Dec 12, 2016
this thing really helps out when the bass hits, I used to watch my lights go dim, now no worries how hard I turn it up
Jason L on Sep 9, 2016
I got capacitor but it got all white stuff in the top?
Douglas F on Nov 9, 2015
Best Answer: Hello Douglas,

That sounds like it may be corrosion. That is often caused by cheap wiring and/or a leak in the capacitor. Feel free to contact our customer service department to have it covered under warranty.
Reply · Report · Rick MStaff on Nov 10, 2015
· Add Answer · I Have This Question Too (1)
What distribution blocks are needed or would fit this capcitor ?
Berto305mia on Oct 24, 2014
Best Answer: I didn't useany just wired it all together but if you were to use distribution blocks go with the ones that properly fit the gauge of the wire you are trying to use
Reply · Report · Vincent P on Oct 25, 2014
· Add Answer · I Have This Question Too (1)

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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: Boss CAP8- OPEN BOX

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8 Farad Digital Hybrid Capacitor with Blue Illumination


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NVX Precut Power/Ground Wire (1/0 AWG)

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



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