--- product_id: 225216885 title: "Top Post Knife Blade Master Switch 12V 24V Battery Disconnect Cut Off Shut Off for Auto Car RV-Marine Boat Truck Vehicle (Negative,Vertical)" brand: "cozyehoo" price: "112.53 DT" currency: TND in_stock: true reviews_count: 8 category: "Cozyehoo" url: https://www.desertcart.tn/products/225216885-top-post-knife-blade-master-switch-12v-24v-battery-disconnect store_origin: TN region: Tunisia --- # 12V/24V multi-vehicle compatible 750A max current Brass corrosion-resistant build Top Post Knife Blade Master Switch 12V 24V Battery Disconnect Cut Off Shut Off for Auto Car RV-Marine Boat Truck Vehicle (Negative,Vertical) **Brand:** cozyehoo **Price:** 112.53 DT **Availability:** ✅ In Stock ## Summary > 🔌 Master Your Power: Cut the Drain, Boost the Gain! ## Quick Answers - **What is this?** Top Post Knife Blade Master Switch 12V 24V Battery Disconnect Cut Off Shut Off for Auto Car RV-Marine Boat Truck Vehicle (Negative,Vertical) by cozyehoo - **How much does it cost?** 112.53 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/225216885-top-post-knife-blade-master-switch-12v-24v-battery-disconnect) ## Best For - cozyehoo enthusiasts ## Why This Product - Trusted cozyehoo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Tool-Free Vertical Installation:** Quick, no-fuss setup with adjustable vertical knife switch design—get protected in minutes. - • **Built to Last with Premium Brass:** Corrosion-resistant brass ensures long-term durability and reliable conductivity under all conditions. - • **Power Through with 750A Max Current:** Handles heavy-duty battery loads for trucks, boats, and RVs without breaking a sweat. - • **Cut Power, Save Battery & Prevent Theft:** Easily isolate your battery to stop drain during downtime and add a stealthy theft deterrent. - • **Universal Fit for Top Post Negative Terminals:** Seamlessly compatible with 6V, 12V, and 24V systems across cars, trucks, boats, and RVs. ## Overview The COZYEHOO Top Post Knife Blade Master Switch is a heavy-duty, brass-made battery disconnect switch designed for negative top post terminals. Rated for up to 750A max current and compatible with 6V, 12V, and 24V systems, it prevents battery drain and unauthorized use across cars, trucks, RVs, and boats. Easy to install with a vertical knife switch design, it offers reliable corrosion resistance and durable conductivity, making it an essential upgrade for any vehicle owner looking to protect their battery and electrical system during extended inactivity. ## Description Product description COZYEHOO Top Post Knife Blade Master Switch, Used for preventing battery drain on car that are not driven often the product is compatible with cars Rv trucks vehicles boats and tractors etc. used the product to prevent battery drain,prevents battery drain during long periods of inactivity, especially on older vehicles with electrical system issues. heavy-duty switch, made of brass material, corrosion resistance, conductive performance is good, durably made for safety use Material: Brass, PVC Maximum Current: 750A Rated Current: 250A Package Included: 1x Battery Disconnect Switch Installation Firstly, disconnect the battery cables from the battery, always disconnect the negative cable first followed by the positive cable. Attach the battery disconnect to the negative battery terminal and tighten but do not over tighten. With the lever on the switch continuously open, connect the negative battery cable you removed from the battery to the opposite end of the disconnect switch. Make sure you have a good connection. Note 1.Mount on negative battery post，Never connect the battery disconnect switch to the positive terminal of your battery. It is usually won’t fit and dangerous. 2.Lead acid batteries are corrosive and explosive, remove any jewelry and always wear safety grasses gloves when working around the lead acid battery. 3.If your plan on the leaving your car for a long time without charging in this is a good way to do it. You don’t need a trickle charger its also a good secondary theft deterrent. You can kill the battery that way the car won’t start. 4.there are 3 kind of battery pole on the market,our switch only fit for 0.59-0.67IN(15-17mm)standard battery top post negative,please measure your battery pole before purchase. Review: Works on my pickup truck - I do wish it came with better instructions .Installed on my pickup truck . Works awesome. Easy to connect and disconnect everytime I use my truck. Review: Works great - Installed on my car and it works great. Easy to install ## Features - 【COMPATIABLE】This knife-blade battery disconnect switch is suitable for TOP POST TERMINAL, battery NEGATIVE post only. Maximum Current: 750A, Rated Current: 250A. 6v 12v 24v car truck, bus, RV, Boat, trailer battery - 【TOP LEVEL & HEAVY DUTY 】This top post battery disconnect switch is made of brass material, corrosion resistance, conductive performance is good, durably made for safety use - 【EASY TO INSTALL】This battery doctor knife switch for top post batteries can be adjusted into a vertical knife switch through the bottom of the screw, easy to install & simple to use. Switch the knife, then power will cut - 【SAVE ELECTRYCITY】This knife blade master switch is used for the battery to isolate and secure the electrical system, eliminate any power draw from the battery when vehicle or boat is not in use, stop unwanted battery drain and prevent theft or unauthorized use. Widely used for car, truck, boat or RV battery, also other electrical equipment's battery - BUY WITH CONFIDENCE: We are so confident you'll think we have the satisfied battery disconnect switch on the market. If you have any problem about our product, please feel free to give us a message and we will do anything for you to make the thing right. We go out of our way to make sure every customer is happy and satisfied with our product and service. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0896YT9MY | | Actuator Type | Rotary | | Best Sellers Rank | #5,456 in Automotive ( See Top 100 in Automotive ) #5 in Boat Battery Switches #12 in Automotive Replacement Battery Switches | | Brand | COZYEHOO | | Brand Name | COZYEHOO | | Circuit Type | 1-way | | Color | black | | Compatible Devices | Car, truck, bus, RV, boat, trailer battery | | Compatible with Vehicle Type | car, truck, bus, RV, boat, trailer | | Connectivity Protocol | X-10 | | Connector Type | Screw | | Contact Material | Brass | | Contact Type | Normally Open | | Control Method | Touch | | Control Type | Isolation Control | | Controller Type | Ring | | Current Rating | 250 Amps | | Customer Reviews | 4.5 out of 5 stars 2,698 Reviews | | International Protection Rating | IP65 | | Item Dimensions | 3.7 x 2.64 x 0.8 inches | | Item Weight | 0.02 Pounds | | Lower Temperature Rating | 1 Degrees Celsius | | Manufacturer | Lispir | | Material Type | Brass | | Model | gh01 | | Mounting Type | Surface Mount | | Number of Items | 1 | | Number of Positions | 1 | | Operating Voltage | 12 Volts | | Operation Mode | Off | | Part Number | gh01 | | Smart Home Compatibility | Not Smart Home Compatible | | Switch Type | Mechanical | | Terminal | Screw | | UPC | 740226066700 603922479048 603922479000 603922479055 | | Unit Count | 1 Count | | Wattage | 9000 watts | ## Product Details - **Operation Mode:** Off - **Current Rating:** 250 Amps - **Operating Voltage:** 12 Volts - **Connector Type:** Screw - **Brand:** COZYEHOO - **Item dimensions L x W x H:** 3.7 x 2.64 x 0.8 inches - **Circuit Type:** 1-way - **Mounting Type:** Surface Mount - **Actuator Type:** Rotary - **Contact Material:** Brass ## Images ![Top Post Knife Blade Master Switch 12V 24V Battery Disconnect Cut Off Shut Off for Auto Car RV-Marine Boat Truck Vehicle (Negative,Vertical) - Image 1](https://m.media-amazon.com/images/I/61-BT1v4vcL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works on my pickup truck *by T***A on March 11, 2026* I do wish it came with better instructions .Installed on my pickup truck . Works awesome. Easy to connect and disconnect everytime I use my truck. ### ⭐⭐⭐⭐⭐ Works great *by R***. on April 3, 2026* Installed on my car and it works great. Easy to install ### ⭐⭐⭐⭐⭐ Quality *by R***Y on April 21, 2026* High quality great value ## Frequently Bought Together - Top Post Knife Blade Master Switch 12V 24V Battery Disconnect Cut Off Shut Off for Auto Car RV-Marine Boat Truck Vehicle (Negative,Vertical) - Side Post Knife Blade Master Switch, Ampper 12V / 24V Battery Disconnect Switch Isolator for Marine Car Boat RV ATV Vehicles (with Long Bolt) - Ampper Top Post Battery Disconnect Switch, 12-48 V Battery Power Cut Master Switch Disconnect Isolator for Car, Vehicle, RV and Boat (Negative, On/Off) --- ## 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.tn/products/225216885-top-post-knife-blade-master-switch-12v-24v-battery-disconnect](https://www.desertcart.tn/products/225216885-top-post-knife-blade-master-switch-12v-24v-battery-disconnect) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-05*