---
product_id: 282068454
title: "BOSS Audio Systems CAP8 Car Capacitor - 8 Farad, Energy Storage, Enhanced Bass From Stereo, Warning Reverse Polarity Tone, Voltage Overload Low Battery Voltage Led"
brand: "boss audio systems"
price: "R3280"
currency: ZAR
in_stock: true
reviews_count: 5
category: "Boss Audio Systems"
url: https://www.desertcart.co.za/products/282068454-boss-audio-systems-cap8-car-capacitor-8-farad-energy-storage
store_origin: ZA
region: South Africa
---

# 8 Farad ultra-fast energy reserve Audible alerts for polarity & voltage issues Super bright 3-digit LED voltage display BOSS Audio Systems CAP8 Car Capacitor - 8 Farad, Energy Storage, Enhanced Bass From Stereo, Warning Reverse Polarity Tone, Voltage Overload Low Battery Voltage Led

**Brand:** boss audio systems
**Price:** R3280
**Availability:** ✅ In Stock

## Summary

> ⚡ Power Your Ride, Own the Soundstage!

## Quick Answers

- **What is this?** BOSS Audio Systems CAP8 Car Capacitor - 8 Farad, Energy Storage, Enhanced Bass From Stereo, Warning Reverse Polarity Tone, Voltage Overload Low Battery Voltage Led by boss audio systems
- **How much does it cost?** R3280 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/282068454-boss-audio-systems-cap8-car-capacitor-8-farad-energy-storage)

## Best For

- boss audio systems enthusiasts

## Why This Product

- Trusted boss audio systems brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Sleep Mode:** Automatically conserves energy by entering sleep status when volume is low or power demand is steady, extending capacitor life.
- • **Never Miss a Beat:** Audible warning tones alert you instantly to reverse polarity, voltage overload, or low battery—protect your gear effortlessly.
- • **Power Your Bass Like a Pro:** 8 Farad capacitance delivers instant energy bursts for deep, punchy bass that commands attention.
- • **Stay Informed with Precision:** Super bright blue digital LED voltage display with ±0.1 V accuracy keeps your system’s power status crystal clear.
- • **Built to Last & Backed by Warranty:** Robust 16V working voltage, low resistance design, and a 3-year warranty ensure reliable performance and peace of mind.

## Overview

The BOSS Audio Systems CAP8 Car Capacitor is an 8 Farad energy storage device designed to stabilize and enhance your car audio system’s power delivery. Featuring a super bright 3-digit blue LED voltage display with ±0.1 V accuracy, audible warnings for reverse polarity and voltage issues, and an automatic sleep mode, it ensures consistent, high-quality sound performance. With a durable 16V working voltage, low equivalent series resistance, and a 3-year warranty, this capacitor is engineered for serious audiophiles seeking powerful, reliable bass enhancement.

## Description

view largerWhat is a Capacitor?A capacitor is a passive (it consumes, but does not produce, energy) two-terminal electrical component. In building a sound system for your car, you would want to use a capacitor for a couple of different reasons.Why Do I Need One?The main reason a capacitor is always recommended is for power reserve. The capacitor stores energy and releases it very quickly to the amplifier(s).How Does This Help?Music is dynamic, no matter what type you listen to, and the dynamics can vary quickly, going from soft voices to thundering bass notes. These moments are where the benefit of having a capacitor is heard. The amplifier requires a constant amount of steady power to function efficiently and power the speakers. A capacitor will keep the power going to the amplifier consistent and stabilized, which means a better-sounding system.Important: The remote output of the head unit is connected to the remote turn on of the capacitor. The capacitor will not function if the remote wire is not connected to your head unit.Specifications Model 2 Farad 3.5 Farad 4 Farad 8 Farad 30 Farad Color Dimensions (L x W x H) CAP2B • Black 3" x 3" x 10.30" CAP3.5B • Black 4" x 4" x 11.37" CAP3.5S • Silver 4" x 4" x 11.37" CAP4C • Chrome 4" x 4" x 11.37" CAP8 • Black 9" x 6" x 2" CAP30 • Black 11.38" x 7.25" x 3" What's in the BoxOne pair of mounting brackets2 ring terminals2 spade terminalsMounting screws1 resistor1 Allen wrenchInstructionsInstallationPower up proceduresPower down and removal

Review: Alimente 1 ampli 1x1500W rms, frôlant les 100A, et un plus petit 4x50W rms de 50A sans problème...
Review: Good

## Features

- 3 Digit Super Bright Blue Digital LED Voltage Display
- Audible Warning Tone for Reverse Polarity, Voltage Overload and Low Battery Voltage.8 Farads with digital voltage display
- Voltage Measurement Accurate to + / - 0.1 VDC
- Automatic Sleep Status When Volume Is Low Or There Is No Voltage Variation Present
- Capacitance: 8,000,000, Working Voltage: 16 VDC, Surge Voltage: 24 VDC.Equivalent Series Resistance: 0.015 Ohm @ 100 Hz / 25 C, Capacitance Tolerance: + / - 10%.Dimensions: 9 x 6 x 2, Unit Weight: 5.3 Lbs.3 Year Warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001DXAVTS |
| Capacitance tolerance | 10 |
| Country of origin | China |
| Item model number | CAP8 |
| Manufacturer | BOSS Audio Systems |
| Maximum storage temperature | 25 Degrees Celsius |
| Maximum voltage | 24 Volts |
| Mounting type | Rack Mount |
| Operating voltage | 24 Volts |
| Product dimensions | 5.1W x 15.2H centimeters |
| UPC | 070992472758 791489108973 115970703926 880959961375 189326618691 999992669855 151903146163 100010956509 088020618207 100177400228 168141264320 806293548683 |
| Upper temperature rating | 25 Degrees Celsius |

## Product Details

- **Brand:** BOSS Audio Systems
- **Capacitance:** 8 Farad
- **Equivalent series resistance:** 0.02 Ohms
- **Material:** Nickel
- **Shape:** Rectangular

## Images

![BOSS Audio Systems CAP8 Car Capacitor - 8 Farad, Energy Storage, Enhanced Bass From Stereo, Warning Reverse Polarity Tone, Voltage Overload Low Battery Voltage Led - Image 1](https://m.media-amazon.com/images/I/81cSBwBMSJL.jpg)

## Questions & Answers

**Q: what all comes with it?**
A: Hello, The CAP8 comes with a 1 Watt/51 ohm Resistor and mounting hardware.

**Q: Does this model flash to the beat?**
A: Hello,
The CAP8 only flashes when it is charging.
Thank you,
Boss Audio

**Q: Does this come with a distribution block and can it power a 4500w amp?**
A: The distribution block is built in. It has a in and a out for the positive and negative.  While the capacitor will help the battery and alternator supply enough power to turn it on it may not be able to supply enough support for those really low tones constantly.  I would recommend running a dual battery setup and if there is enough space to do so upgrade the alternator to as high a amperage as you can get. In my case I am driving a 1980 f350 and I upgraded to a 150 amp alternator and all lighting is led. I also run 2 batteries and am looking at installing a second alternator to supply enough power for my amplifier setup. I am pulling 3500 watts. When you install a larger alternator like I did using a 1 wire alternator you will also have to run a significantly larger wire from the alternator to the battery.

**Q: I have an 4000 watts hifonics amp and i have re audio sx 18 d2 1000 watts do u guys think this capacitor gonna handle my system?**
A: I think 3.5 farad its ok

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***M on 17 August 2021*

Alimente 1 ampli 1x1500W rms, frôlant les 100A, et un plus petit 4x50W rms de 50A sans problème...

### ⭐⭐⭐⭐⭐ Review
*by R***E on 20 July 2025*

Good

### ⭐⭐⭐⭐ Review
*by H***Z on 2 July 2018*

Envío muy rápido, llego antes de lo esperado por esa parte muy bien, en cuanto al producto no me gustó que llego abierta la caja, el capacitor estaba suelto no estaba sujetado como debía venir en su caja, el manual muy sucio parese usado antes y eso crea algo de desconfianza en el producto al parecer que ya fue usado.

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-25*