--- product_id: 10264161 title: "Stinger SGP35 High Current 500-Amp Battery Relay & Isolator for Most Vehicles, Water-Resistant Design for Marine & Powersports, Handles up to 900A Surges, Dual Battery Isolator for Car Audio Systems" brand: "stinger" price: "1073 Lei" currency: RON in_stock: true reviews_count: 13 category: "Stinger" url: https://www.desertcart.ro/products/10264161-stinger-sgp35-high-current-500-amp-battery-relay-and-isolator store_origin: RO region: Romania --- # 500A constant current Water-resistant phenolic plastic 100,000 mechanical cycles Stinger SGP35 High Current 500-Amp Battery Relay & Isolator for Most Vehicles, Water-Resistant Design for Marine & Powersports, Handles up to 900A Surges, Dual Battery Isolator for Car Audio Systems **Brand:** stinger **Price:** 1073 Lei **Availability:** ✅ In Stock ## Summary > ⚡ Power your ride with unstoppable current and rock-solid reliability! ## Quick Answers - **What is this?** Stinger SGP35 High Current 500-Amp Battery Relay & Isolator for Most Vehicles, Water-Resistant Design for Marine & Powersports, Handles up to 900A Surges, Dual Battery Isolator for Car Audio Systems by stinger - **How much does it cost?** 1073 Lei with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/10264161-stinger-sgp35-high-current-500-amp-battery-relay-and-isolator) ## Best For - stinger enthusiasts ## Why This Product - Trusted stinger brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Engineered for 100,000 mechanical cycles, ensuring long-term durability under heavy use. - • **Rugged & Weatherproof:** Encased in water-resistant black phenolic plastic, perfect for demanding automotive environments. - • **Universal Compatibility:** Works seamlessly with all 12V alternators and charging systems for hassle-free integration. - • **Smart Battery Protection:** Prevents primary battery drain by isolating secondary batteries when ignition is off. - • **Unmatched Power Handling:** Handles a massive 500 amps continuous and 900 amps peak for ultimate reliability. ## Overview The Stinger SGP35 is a high-current 12V battery relay and isolator designed to handle 500 amps continuous and 900 amps peak current. Built with water-resistant phenolic plastic and rated for 100,000 mechanical cycles, it reliably isolates secondary batteries to prevent primary battery drain. Compatible with all alternators and charging systems, it’s the go-to solution for professional-grade automotive power management. ## Description Made of Water resistant black phenolic plastic, has a 100,000 mechanical cycle life and 500 amp contact rating. Stinger's high current relays are the most efficient and reliable way to add secondary batteries to your system. This new for 2011 item has the highest current handling capability to date. Simply connect these relays to operate when the ignition is turned on. The battery system will remain separate while the ignition is off, preventing system drain. Compatible with all types of alternators and charging systems. Review: Rated for constant duty - Use this with my 12K winch on my Jeep JLU. Wired to a factory auxiliary switch it offers an extra level of protection and eliminates a high amperage hot wire running though the engine compartment to the front bumper. I bought this brand based on positive reviews and was going to go cheap on an item that could cause a fire if it failed. Review: Perfect selenoid - Selenoid interrupt for a winch I just installed on my truck. Works perfectly. ## Features - High Current Relay/Isolator: 500 Amp constant, 900 Amp peak current - Prevents primary battery discharge - Power on demand: Maximum current transfer - Extends battery life: 100,000 mechanical cycle life - Universal 12 volt applications: Water resistant black phenolic plastic - Ideal for 2nd audio battery isolation from vehicle systems: High current relays are the most reliable and efficient way to add secondary batteries to your system - Compatible with all types of alternators and charging systems ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004WDPZEW | | Best Sellers Rank | #35,674 in Automotive ( See Top 100 in Automotive ) #349 in Automotive Switches & Relays #6,973 in Automotive Tools & Equipment | | Brand | STINGER | | Coil Voltage | 12 Volts | | Connector Type | Screw | | Contact Current Rating | 500 Amps | | Contact Material | Copper | | Contact Type | Electromechanical | | Current Rating | 500 Amps | | Customer Reviews | 4.6 4.6 out of 5 stars (643) | | Date First Available | April 13, 2011 | | Is Discontinued By Manufacturer | No | | Item Weight | 1.65 pounds | | Item model number | SGP35 | | Minimum Switching Voltage | 12 Volts (DC) | | Mounting Type | Socket Mount | | Number of Terminals | 2 | | Operation Mode | Automatic | | Product Dimensions | 7.5 x 2 x 7 inches | | UPC | 609098797771 609098800365 | | Warranty | 1 year | | Wattage | 6000 watts | ## Product Details - **Connector Type:** Screw - **Contact Material:** Copper - **Contact Type:** Electromechanical - **Current Rating:** 500 Amps - **Mounting Type:** Socket Mount ## Images ![Stinger SGP35 High Current 500-Amp Battery Relay & Isolator for Most Vehicles, Water-Resistant Design for Marine & Powersports, Handles up to 900A Surges, Dual Battery Isolator for Car Audio Systems - Image 1](https://m.media-amazon.com/images/I/61jbjoqbpVL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Rated for constant duty *by F***4 on June 16, 2025* Use this with my 12K winch on my Jeep JLU. Wired to a factory auxiliary switch it offers an extra level of protection and eliminates a high amperage hot wire running though the engine compartment to the front bumper. I bought this brand based on positive reviews and was going to go cheap on an item that could cause a fire if it failed. ### ⭐⭐⭐⭐⭐ Perfect selenoid *by D***9 on July 25, 2025* Selenoid interrupt for a winch I just installed on my truck. Works perfectly. ### ⭐⭐⭐⭐⭐ Good *by A***S on January 18, 2026* Very good ## Frequently Bought Together - Stinger SGP35 500-AMP Relay and Isolator , Black - TKDMR 10pcs 1/0 AWG-3/8 Battery Lugs,Heavy Duty Wire Lugs,Ring Terminals,Battery Cable Ends,0 Guage terminals,Battery Terminal Connectors with 10pcs 3:1 Heat Shrink Tubing - BOJACK 0/2/4 Gauge ANL Fuse Holder and 200 Amp ANL Fuses for 0 2 4 8 Gauge AWG Fuse Block, Fuse Box, Automotive Fuse Holder 200A (Pack of 2) --- ## 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.ro/products/10264161-stinger-sgp35-high-current-500-amp-battery-relay-and-isolator](https://www.desertcart.ro/products/10264161-stinger-sgp35-high-current-500-amp-battery-relay-and-isolator) --- *Product available on Desertcart Romania* *Store origin: RO* *Last updated: 2026-04-23*