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Boss CAP20

20 Farad Digital Hybrid Capacitor with Blue Illumination

  • 4.4

(5 reviews)

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The product on this page is discontinued.

Specials with this product

  • Free Ground Shipping to the 48 statesdetails

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Customer Testimonial

I registered an order of a pair of Polk speakers on the 25th of Jan at around 7pm local Norwegian time (CET) and received the package today 27 of Jan at around 4 pm.

That is extremely efficient handling and perfect logistics.

Thanks and best regards from Norway!

- Norway from Oslo Norway

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  • 20 Farad Digital Hybrid Capacitor with Blue Illumination
  • 3-Digit, super bright LED voltage meter
  • Voltage measure accurate to +/- 0.1VDC
  • Blue illuminated window
  • Warning tones for reverse polarity connection, over voltage (>17VCD), 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: 11"L x 7-1/2"W x 3-1/4"H
  • 1-year Manufacturer's warranty
Capacitor Specifications
Capacitance (farads) 20 farads
LCD Meter Display Yes
Maximum Input Gauge Size 4 AWG
Maximum Output Gauge Size 4 AWG
Built-In Distribution Block No
Primary Color Silver
Illumination Blue
Width 7-1/2"
Height 3-1/4"
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration 1 year
Labor Warranty Duration 1 year
Warranty Provider Manufacturer
Customer Review Summary for Boss CAP20
Average Customer Rating is 4.4 out of 5 stars:
  • 4.4
based on 5 Reviews
Share your thoughts with others:
Rating Distribution:
5 star:
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40%
4 star:
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60%
3 star:
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0%
2 star:
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0%
1 star:
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0%
what's this?
Average Attributes Rating:
Durability
  • 4.2
4.2
Value
  • 4.2
4.2
Features
  • 4.8
4.8
Design
  • 5.0
5.0
Usability
  • 4.0
4.0
what's this?
Most Helpful Customer Reviews:
January 10, 2013 good deal
Review by
chop from Nashville;Tn
Overall
  • 4.0
Durability
  • 4.0
Value
  • 3.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 1.0
My boss20 cap it cool but after about 3 months my lights start to dim in the inside of my car i upgrade my batteries (under the hood & trunk ) maybe need to upgrade from 4gauge to 0 gauge.
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July 22, 2012 headlights dont dim
Review by
-Benjamin from Hampton, VA
Overall
  • 4.0
Durability
  • 4.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
I don't have any other products to compare it to yet.



This may be the reason that my amp cuts out at extreme volume output, others are that I may need a better ground, an additional sub crossover, or I may have a defective sub or amp. Overall I think this product is good. I think if I do another install I will upgrade to the next size up from this company and go ahead and throw the extra battery in the trunk.



I seriously doubt this thing can hold 20 farads, (20,000 watts) of juice. However, it is still pretty heavy duty for a car audio cap. People with superior amps and subs dont touch what my system does, and I think its the cap rather than the dynamat or brand selections. Most people dont use a cap, and since they are less than a hundred bucks this makes them idiots.



I may be an idiot for not doing a diode assisted installation charge, I'd reasearch the need If I were you. System still works well, I have a few kinks to get out, but I doubt the cap is one of them.
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March 1, 2012 great product
Review by
Port Arthur from Tx
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
Great product. Lights up cool, but the lights didn't dim at all. I was pushing 2 Kicker CVR's at 1 ohm on a DB Drive 1000.1 amp.
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March 3, 2009 boss cap20
Review by
boydaig from Ternopil, Ukraine
Overall
  • 5.0
Durability
  • 4.0
Value
  • 4.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
this good stuff, very good looking, working well, i never have problem with boss, i have boss 12, and cap help my amplifier to full load my sub.
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December 20, 2008 Boss CAP20
Review by
Igor from Warren, MI
Overall
  • 4.0
Durability
  • 4.0
Value
  • 4.0
Features
  • 4.0
Design
  • 5.0
Usability
  • 4.0
This is good stuff, but its not the best quality, I am living in Ukraine, and my father is electrician, and he says that this capacitor does not have 20 farad, only 2-3. but it very good looking in my car.
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Ring Terminals
Use these ring terminals to connect the power and ground cable to the capacitor. The more surface area the ring terminal has to the capacitor's terminal, the better the connection will be.
  Product Price Add?
Scosche Ring Terminal (1/0 AWG) Scosche Ring Terminal (1/0 AWG)
Pair of 1/0 AWG ring terminals with 3/8" hole and red and black insulating sleeves.
$3.99
Streetwires Ring Terminals (1/0 AWG) Streetwires Ring Terminals (1/0 AWG)
Pair of 1/0 AWG set screw power ring terminals.
$16.99
Resistors
Before a capacitor is connected directly to the 12V source, it must be charged. Using one of these resistors will allow you to safely charge your capacitor.
  Product Price Add?
Directed DEI Resistors (15-Pack) Directed DEI Resistors (15-Pack)
Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.
$1.99

Product Summary

Manufacturer: Boss
Model number: CAP20
UPC: 791489109017
Weight: 8.00 lbs
Internal SKU: cap20
Internal product ID: 13312