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Christmas cut off: As the cut-off date has passed, Christmas delivery may not be guaranteed. Please select Express shipping for the best chance of delivery before Christmas.

Our team will be on holiday from Dec 22nd to Jan 15th. Please be assured that your order will be dispatched, and any inquiries will be promptly addressed upon our return. We appreciate your understanding and patience during this period.

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Boss Audio CAP18 18 Farad Digital Hybrid Capacitor

UPC: 791489108980 SKU: CAP18
Boss Audio CAP18 18 Farad Digital Hybrid Capacitor
$299.99
$182.85
This 20% discount offer ends at 8pm
 $146.28
Save: 20%
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  • Pickup (Same or next biz day)
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  • 12 Month Australian Warranty
  • Manufactured by: Boss Audio
  • Availability:In Stock
  • Model: Boss CAP18
  • 10 Reviews
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18 Farad Capacitor, Digital Voltage Display, Black Chrome, Active Light Show


  • Finish Color: Black
  • Equivalent Series Resistance (ESR): 0.0015 Ohms @ 120 Hz @ 25 Degrees C
  • Remote Terminal Screw
  • Capacitance: 18 Farad, 18000000 Microfarad
  • Rated Voltage: 16v
  • Surge Voltage: 24v
  • Capacitance Tolerance: 10
  • Dimensions: L 11" x W 7.75" x H 3.2"

Questions & Answers


How do I know if I need to use a capacitor, and how many Farads do I need?

A capacitor is mainly required only if you experience power-related issues such as dimming lights when playing music. The general rule of thumb is to use 1 Farad of capacitance for every 1000 watts RMS of total system power.


Cap 18 great product

Light dimming is not a problem anymore
willi_prime, 2020-07-07 on Ebay



good capacitor

great thing. Fully wrap 2 amps. current from 20 to 75A. As i say good
albertaodina0, 2018-07-29 on Ebay



Good Amp Capacitor

I do and still appreciate this purchase of this Capacitor..
galli_vince, 2018-04-25 on Ebay



It's capable of storing lots of power and acts as an accumulator. Solved the problem of dimming/flickering problem of my car .

It truly has a capability of storing lot of power and delivering instantly as per the sudden demand of the power amp. I'm using BOSS 2400w RIOT class D amp with Pioneer 12" sub with huge power input. If you have done correct wiring with correct gauge of wire believe me NO DIMMING !! NO FLICKERING !! I recommend 18 Farad or higher would be ideal if you are using a high power amp.. Many thanks to the seller for speedy shipping. I offer 5 stars all the way for everything.
lakdis8, 2017-06-19 on Ebay



Works amazingly great price and very satisfied

I hooked it up in twenty minutes easy install no more headlights dimming from bass have it hooked to a 4000 watt amp for sub and a thousand watt amp for highs
damofeer_0, 2017-06-02 on Ebay



Awesome .18 f cap

Only waited 2 days..awesome thank you the cap works very well and a good price..thanks
jacepperle_0, 2017-04-04 on Ebay



Boss? Yup :)

This is one of the first things that I have ever bought from Boss, and it really blew away my expectations! Functions well with no issues and it looks great doing it!
dapper-gentleme..., 2016-10-08 on Ebay



Gives you that extra punch

Allows you to run a little smaller power cables to your amps. Small size with a lot of stored power. Study the wiring diagram carefully and identified the in and out on both the + & - terminals. Do it wrong and you will hurt the Led lights read out. The capacitor still will work but with no readout or light show which is pretty neat and impressive. It does draw a pretty big charge when you hook the power to it for the first time and if you unhook battery you need to turn on something to draw the power back out of it before working on the wiring to prevent being shocked by it because it acts like a battery. Dan
soundxlr8r, 2016-04-13 on Ebay



Nice

It does the job
jiesanchezsantiag0, 2019-12-23 on Ebay



Not 18FD

Works about the same as my 2FD.. Dash lights still dim on a single bass note after a no bass delay.
lakeshore-computer, 2018-02-25 on Ebay





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