---
product_id: 116362185
title: "Ampper Top Post Battery Disconnect Switch 12V, Quick Disconnect Battery Cut Off Switch Battery Shut Off Kill Switch for Car (1 Pack)"
brand: "ampper"
price: "₪47"
currency: ILS
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.il/products/116362185-ampper-top-post-battery-disconnect-switch-12v-quick-disconnect-battery
store_origin: IL
region: Israel
---

# 12V DC system compatibility 125A heavy-duty current rating Knob-type quick disconnect Ampper Top Post Battery Disconnect Switch 12V, Quick Disconnect Battery Cut Off Switch Battery Shut Off Kill Switch for Car (1 Pack)

**Brand:** ampper
**Price:** ₪47
**Availability:** ✅ In Stock

## Summary

> 🔋 Twist, Disconnect, and Drive with Confidence!

## Quick Answers

- **What is this?** Ampper Top Post Battery Disconnect Switch 12V, Quick Disconnect Battery Cut Off Switch Battery Shut Off Kill Switch for Car (1 Pack) by ampper
- **How much does it cost?** ₪47 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/116362185-ampper-top-post-battery-disconnect-switch-12v-quick-disconnect-battery)

## Best For

- ampper enthusiasts

## Why This Product

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

## Key Features

- • **Safety First:** Eliminates power draw when not in use, protecting your battery and electrical system.
- • **Built to Last:** Rustproof, corrosion-resistant solid construction ensures long-term durability.
- • **Universal Fit:** Designed for 15-17 mm top post terminals—perfect for cars, RVs, boats, and more.
- • **Compact & Convenient:** Small 3.3" x 1.5" x 1.5" size fits seamlessly without clutter.
- • **Power Cut in a Twist:** Easily isolate your battery with a simple knob twist—no tools needed.

## Overview

The Ampper Top Post Battery Disconnect Switch is a robust 12V, 125A rated quick disconnect switch designed for 15-17 mm top post battery terminals. Its knob-type operation allows effortless power isolation to prevent battery drain and secure your vehicle’s electrical system. Built with corrosion-resistant materials, it’s ideal for cars, RVs, boats, and other vehicles, combining durability with easy installation in a compact form factor.

## Description

Ampper top post knob type battery disconnect master switch for Marine Car Boat RV ATV Vehicles Specifications: 1, Used for top post terminal, 15-17 mm cone battery negative post only. 1, On/Off 2 position. 2, Voltage: 12V, rated current: 125A. 3, Easy to install & simple to use. 4, Knob type, loose / twist of the knob, then power will cut. 5, Solid made, rust and corrosion resistant, durable made for safety use. 6, Can stand alone or be locked together with other switch. 7, Used for battery to isolate and secure the electrical system, eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely. 8, Used for Car, Vehicle, RV and Boat, also electrical equipment's switch. 9, Size: 3.3" x 1.5" x 1.5". Complete kits includes: 1 Pack x battery switch

## Features

- Compatible: used for top post terminal, 15-17 mm cone battery negative post only, DC 12 V system, rated current: 125 A, On/Off 2 position.
- Convenience: knob type, easy to install & simple to use. Loose / twist of the knob, then power will cut.
- Heavy Duty: solid made, rust and corrosion resistant, durable made for safety use.
- Purpose: used for battery to isolate and secure the electrical system, eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely.
- Used for Car, Vehicle, RV and Boat batteries which have a standard 15-17 mm cone top post terminal, also used for electrical equipment.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Operation Mode | ON-OFF |
| Current Rating | 125 Amps |
| Operating Voltage | 12 Volts |
| Contact Type | Normally Open |
| Connector Type | Clamp |
| Brand | Ampper |
| Terminal | Top Post |
| Item dimensions L x W x H | 3.3 x 1.5 x 1.5 inches |
| Circuit Type | 2-way |
| Contact Material | Stainless Steel |
| International Protection Rating | IP65 |
| Number of Positions | 2 |
| Control Method | Touch |
| Connectivity Protocol | X-10 |
| Color | Top Post |
| Wattage | 1500 watts |
| Unit Count | 1 Count |
| Manufacturer | Ampper |
| Vehicle Service Type | Compatible for Car, Vehicle, RV and Boat |
| Model | Am-CBS21 |
| Item Weight | 4.4 ounces |
| Product Dimensions | 3.3 x 1.5 x 1.5 inches |
| Item model number | Am-CBS21 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | Am-CBS21 |
| Special Features | Used for car battery systems, disconnects the battery safely, eliminate any power draw from the battery when vehicle or boat is not in use, isolate and secure the electrical system, used for top post |
| Voltage | 12 Volts |

## Product Details

- **Operation Mode:** ON-OFF
- **Current Rating:** 125 Amps
- **Operating Voltage:** 12 Volts
- **Contact Type:** Normally Open
- **Connector Type:** Clamp
- **Brand:** Ampper
- **Terminal:** Top Post
- **Item dimensions L x W x H:** 3.3 x 1.5 x 1.5 inches
- **Circuit Type:** 2-way
- **Contact Material:** Stainless Steel

## Images

![Ampper Top Post Battery Disconnect Switch 12V, Quick Disconnect Battery Cut Off Switch Battery Shut Off Kill Switch for Car (1 Pack) - Image 1](https://m.media-amazon.com/images/I/61-5Pr9QAXS.jpg)
![Ampper Top Post Battery Disconnect Switch 12V, Quick Disconnect Battery Cut Off Switch Battery Shut Off Kill Switch for Car (1 Pack) - Image 2](https://m.media-amazon.com/images/I/71PeQHY0FEL.jpg)
![Ampper Top Post Battery Disconnect Switch 12V, Quick Disconnect Battery Cut Off Switch Battery Shut Off Kill Switch for Car (1 Pack) - Image 3](https://m.media-amazon.com/images/I/61WYP2o5lxL.jpg)
![Ampper Top Post Battery Disconnect Switch 12V, Quick Disconnect Battery Cut Off Switch Battery Shut Off Kill Switch for Car (1 Pack) - Image 4](https://m.media-amazon.com/images/I/61AtcGqjyPL.jpg)
![Ampper Top Post Battery Disconnect Switch 12V, Quick Disconnect Battery Cut Off Switch Battery Shut Off Kill Switch for Car (1 Pack) - Image 5](https://m.media-amazon.com/images/I/61T7Ue6lq+L.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: Does the green knob need to be removed in order to disconnect the battery?**
A: Not removed. Simply screw tight to engage battery use and loosen to disengage. The green knob can not fully be removed or misplaced.

**Q: What kind of metal is this made out of?**
A: It is made of cast zinc, plated with a thin layer of a yellow metal that is similar to brass or bronze.
Cast zinc can easily crack under stress as a few reviews mentioned it.

**Q: Should the be mounted on the positive terminal or the negative terminal?**
A: Must be installed ONLY ON THE NEGATIVE  terminal of the battery!!!
The reason is safety.  The positive terminal has a red plastic cover to protect against accidental shorts which can be very dangerous. The negative terminal does not have a plastic cover because if it shorts to a grounded metal part nothing would happen.
If you install it on the positive terminal, you will have exposed metal that can accidentally be shorted.
Hope my answer also provides the reasoning such that a user will understand the “why” not just the “how”.

**Q: If you have dual batteries do you need two switches**
A: Yes, or choose 1-2-both-off switch: https://www.amazon.com/dp/B07PN9CT9H

## Customer Reviews

### ⭐⭐⭐⭐⭐ Hard to find.
*by C***Y on May 28, 2025*

Hard to find this particular style great quality material

### ⭐⭐⭐⭐⭐ No issue's
*by C***A on May 20, 2025*

Perfect

### ⭐⭐⭐⭐⭐ Inexpensive but effective
*by B***L on May 1, 2025*

I installed the disconnect on my boat battery negative post. It fit securely and it cuts off power by rotating the knob.

## Frequently Bought Together

- Top Post Battery Disconnect Switch, Ampper Battery Master Switch Isolator for Power Disconnect Cut Off (1 Pack)
- Side Post Battery Disconnect Switch, Ampper Battery Master Switch Isolator for Power Disconnect Cut Off (with Long Bolt)
- Top Post Battery Disconnect Switch - Quick Disconnect Battery Cut Off Switch for Car Truck Marine RV and Electrical Equipment - 12V/125A - Red

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*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-02-23*