--- product_id: 116362185 title: "Top Post Battery Disconnect Switch 12V, Quick Disconnect Battery Cut Off Switch Battery Shut Off Kill Switch for Car (1 Pack)" brand: "ampper" price: "NZ$23" currency: NZD in_stock: true category: "Ampper" url: https://www.desertcart.nz/products/116362185-top-post-battery-disconnect-switch-12v-quick-disconnect-battery-cut store_origin: NZ region: New Zealand --- # 12V DC system compatibility 125A heavy-duty current rating Easy knob twist on/off control Top Post Battery Disconnect Switch 12V, Quick Disconnect Battery Cut Off Switch Battery Shut Off Kill Switch for Car (1 Pack) **Brand:** ampper **Price:** NZ$23 **Availability:** ✅ In Stock ## Summary > 🔋 Twist, Cut, Secure — Power Control Made Effortless ## Quick Answers - **What is this?** 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?** NZ$23 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/116362185-top-post-battery-disconnect-switch-12v-quick-disconnect-battery-cut) ## 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 - • **Power Cut in a Twist:** Quick knob-turn disconnect for instant battery isolation - • **Universal Top Post Fit:** Fits standard 15-17 mm cone battery negative terminals on cars, boats, RVs, and more - • **Safety Meets Simplicity:** Eliminates power drain and secures your electrical system with a simple 2-position switch - • **Compact & Ready to Mount:** Sleek 3.3" x 1.5" x 1.5" panel mount design fits seamlessly into your setup - • **Built to Brave the Elements:** Rust & corrosion-resistant brass construction for long-lasting durability ## Overview The Ampper Top Post Battery Disconnect Switch is a robust 12V, 125A-rated kill switch designed for quick and easy battery isolation on vehicles, boats, and RVs. Featuring a corrosion-resistant brass build and a user-friendly knob control, it fits standard 15-17 mm top post negative terminals to prevent power drain and protect your electrical system with reliable, durable performance. ## 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 | |---------------|-------| | ASIN | B07JYYXJH7 | | Best Sellers Rank | #23,742 in Automotive ( See Top 100 in Automotive ) #53 in Automotive Replacement Battery Switches | | Brand Name | Ampper | | Circuit Type | 2-way | | Color | Top Post | | Compatible Devices | Car, Vehicle, RV, Boat, Electrical Equipment | | Compatible with Vehicle Type | Compatible for Car, Vehicle, RV and Boat | | Connectivity Protocol | X-10 | | Connector Type | Clamp | | Contact Material | Stainless Steel | | Contact Type | Normally Open | | Control Method | Touch | | Control Type | Power Supply Control | | Current Rating | 125 A | | Customer Reviews | 4.5 4.5 out of 5 stars (2,120) | | International Protection Rating | IP65 | | Item Dimensions | 3.3 x 1.5 x 1.5 inches | | Item Weight | 4.4 ounces | | Manufacturer | Ampper | | Material Type | Brass | | Model | Am-CBS21 | | Mounting Type | Panel Mount | | Number of Positions | 2 | | Operating Voltage | 12 volts | | Operation Mode | ON-OFF | | Part Interchange Info | metal | | Part Number | Am-CBS21 | | Specification Met | UL | | Switch Type | Kill Switch | | Terminal | Top Post | | Unit Count | 1 Count | | Wattage | 1500 watts | ## Product Details - **Brand:** Ampper - **Connector Type:** Clamp - **Contact Type:** Normally Open - **Current Rating:** 125 A - **Item dimensions L x W x H:** 3.3 x 1.5 x 1.5 inches - **Material:** Brass - **Operating Voltage:** 12 volts - **Operation Mode:** ON-OFF - **Switch Type:** Kill Switch - **Terminal:** Top Post ## Images ![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) ## 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 ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.nz/products/116362185-top-post-battery-disconnect-switch-12v-quick-disconnect-battery-cut](https://www.desertcart.nz/products/116362185-top-post-battery-disconnect-switch-12v-quick-disconnect-battery-cut) --- *Product available on Desertcart New Zealand* *Store origin: NZ* *Last updated: 2026-09-10*