

Gravity GR-1000BC 1000 Amp 12V Car Audio Capacitor
- 1000-amp capacity designation
- For 12V vehicle electrical systems
- Supports aftermarket amplifier installations
- Designed for car audio systems
- Connection terminals and mounting hardware listed
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This item
Gravity GR-1000BC 1000 Amp 12V Car Audio Capacitor
$298.00
STX Audio SX0C 0 AWG Amplifier Wiring Kit
$69.99
The Gravity GR-1000BC is a 12V car-audio power capacitor listed with a 1000-amp capacity designation. It is intended to support aftermarket amplifier and subwoofer installations that create brief, high-current demands on a vehicle electrical system. By serving as a local energy reserve near the amplifier, it is designed to help reduce voltage variation during demanding bass passages.
This capacitor is suited to vehicle owners building or upgrading a powered audio system rather than replacing a vehicle battery or charging system. It can be used with car-audio amplifiers and subwoofer systems where stable power delivery is an installation priority. It is particularly relevant when an amplifier's momentary demand can cause noticeable electrical-system fluctuation.
In a car-audio system, the GR-1000BC is positioned as a stiffening capacitor. It stores electrical energy and can release it during short transient demands, such as strong low-frequency musical hits. This support is intended to help an amplifier maintain a more consistent supply voltage during those brief peaks.
The GR-1000BC is designed for 12V automotive electrical systems and is identified as a car battery capacitor for audio-system use. Its purpose is power support, not audio signal processing, speaker crossover control, or direct sound reproduction. System results depend on the condition and capacity of the vehicle battery, alternator, wiring, grounds, amplifier, and installation.
For an upgrade path, this capacitor can be added to an existing aftermarket amplifier power circuit when the system is properly fused and wired. It may complement a well-maintained charging system, but it is not a substitute for correcting inadequate wiring, weak batteries, poor grounds, or an alternator that cannot sustain a system's continuous electrical load. Professional installation is advisable when working with high-current automotive power connections.
Key Features
- 1000-Amp Listing: Listed with a 1000-amp capacity designation for car-audio power support.
- 12V System Use: Intended for vehicles with 12V electrical systems.
- Car-Audio Application: Designed for aftermarket amplifier and subwoofer installations.
- Transient Power Reserve: Stores energy for short periods of elevated electrical demand.
- Voltage-Support Role: Intended to help limit brief voltage drops at the amplifier.
- Amplifier-System Integration: Installs as part of a vehicle's amplifier power circuit.
Design & Installation
The Gravity GR-1000BC uses a dedicated capacitor format intended for automotive audio power support. Marketplace information identifies connection terminals and mounting hardware, allowing the unit to be incorporated into an amplifier installation. No confirmed farad rating, terminal wire-size range, dimensions, or case-material specification is available for this exact model.
Mount the capacitor securely in a protected location close to the amplifier power connection, following the product instructions and accepted automotive wiring practices. Use correctly sized power cable, secure grounds, and appropriate circuit protection for the complete amplifier system. Observe capacitor charging and polarity procedures before connecting it to vehicle power, and have a qualified installer perform the work if you are unfamiliar with high-current DC wiring.
| Brand | Gravity |
|---|---|
| Model | GR-1000BC |
| SKU / Model Number | GR-1000BC |
| UPC | 701160345818 |
| Product Type | Car audio power capacitor |
| Application | Car audio systems |
| Electrical System Voltage | 12V |
| Listed Capacity Designation | 1000 Amp |
| Primary Use | Aftermarket amplifier power support |
| Compatible System Type | Amplifier and subwoofer systems |
| Included Mounting Hardware | Listed |
| Connection Terminals | Listed |
| User Manual | Listed |
Is the GR-1000BC for a 12V vehicle?
Yes. Marketplace listings identify the GR-1000BC as a 12V car battery capacitor for audio-system applications. Confirm that your vehicle uses a conventional 12V electrical system before installation.
Will this replace a weak battery or alternator?
No. A capacitor provides short-duration energy support in an audio power circuit; it is not a replacement for a healthy battery, properly sized wiring, secure grounds, or adequate alternator output.
Can it be used with an amplifier and subwoofers?
Yes. The product is listed for car audio systems and is intended to support aftermarket amplifier and subwoofer installations. It should be integrated into a properly fused amplifier power setup.
What is the listed capacity of this model?
The GR-1000BC is listed with a 1000-amp capacity designation. A farad value was not confirmed for this exact model, so capacitor sizing should not be assumed from the amp designation alone.
What is included with the capacitor?
Marketplace information lists mounting hardware, connection terminals, and a user manual with the capacitor. Verify package contents with the selling retailer before purchase, as packaging can vary.
Should it be professionally installed?
Professional installation is recommended if you are not experienced with high-current automotive wiring. Correct polarity, secure mounting, wire sizing, grounding, fusing, and capacitor charging procedures are important.
Shipping
- Free 2nd-Day Air shipping on this item
- FREE Next-Day Air on orders over $499
- Orders placed on business days are typically processed the same day, delivery estimates are shown at checkout.
Warranty & Returns
- Authorized Dealer — 100% authentic products with full manufacturer warranty
- 60-Day Returns — Hassle-free returns, see our return policy for details
- Price Match Guarantee — We match verified prices, see policy for terms

Gravity GR-1000BC 1000 Amp 12V Car Audio Capacitor


















