--- product_id: 792035240 title: "500A Battery Monitor with Shunt, 8–120V Coulomb Meter, DC Power & Capacity Monitor for LiFePO4/Lithium/Lead Acid Batteries, for RV Solar Boat Golf Cart" brand: "foretwinia" price: "VT16921" currency: VUV in_stock: true reviews_count: 8 category: "Foretwinia" url: https://www.desertcart.vu/products/792035240-500a-battery-monitor-with-shunt-8-120v-coulomb-meter-dc store_origin: VU region: Vanuatu --- # 500A max current Real-time voltage & amp-hour tracking 8-120V wide voltage range 500A Battery Monitor with Shunt, 8–120V Coulomb Meter, DC Power & Capacity Monitor for LiFePO4/Lithium/Lead Acid Batteries, for RV Solar Boat Golf Cart **Brand:** foretwinia **Price:** VT16921 **Availability:** ✅ In Stock ## Summary > 🔋 Stay charged, stay ahead — never miss a watt! ## Quick Answers - **What is this?** 500A Battery Monitor with Shunt, 8–120V Coulomb Meter, DC Power & Capacity Monitor for LiFePO4/Lithium/Lead Acid Batteries, for RV Solar Boat Golf Cart by foretwinia - **How much does it cost?** VT16921 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/792035240-500a-battery-monitor-with-shunt-8-120v-coulomb-meter-dc) ## Best For - foretwinia enthusiasts ## Why This Product - Trusted foretwinia brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Data You Can Trust:** Power-off memory ensures no loss of critical battery capacity data, even during shutdowns. - • **Compact & User-Friendly:** Lightweight 1.54 lbs with a crisp LCD display—easy install for pros and beginners alike. - • **Precision Power Tracking:** Monitor voltage, current, and power in real time for ultimate battery insight. - • **Versatile Multi-Use Design:** Perfect for RVs, solar setups, boats, golf carts, and any DC power system you rely on. - • **Universal Battery Compatibility:** Seamlessly supports LiFePO4, Lithium, Lead Acid, and NiMH batteries across 8-120V. ## Overview The Foretwinia 500A Battery Monitor with Shunt is a high-precision DC power and capacity meter compatible with a broad voltage range (8-120V) and multiple battery types including LiFePO4, Lithium, Lead Acid, and NiMH. Designed for diverse applications like RVs, solar energy, boats, and golf carts, it features real-time monitoring of voltage, current, power, and amp-hours, with reliable data retention even after power-off. Its compact, lightweight design and clear LCD make installation and use straightforward, delivering professional-grade battery insights at an unbeatable value. ## Description Buy Foretwinia 500A Battery Monitor with Shunt, 8–120V Coulomb Meter, DC Power & Capacity Monitor for LiFePO4/Lithium/Lead Acid Batteries, for RV Solar Boat Golf Cart: Battery Testers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Me encantó este monitor te dice todo lo que necesitas saber , info muy confiable y lo pude instalar por mis propios medios gracias a la IA es como tener un especialista al lado ayudándome imposible que no te salga todo perfecto lo estoy probando desde hace unos 4 días y la info es perfecta me marca los amp que gasta cada cosa que enchufo en el sistema el voltaje el porcentaje de carga de mi batería auxiliar de la camioneta y la energía que entra cuando se está cargando con el alternador o con el panel solar desplegable de 100 wats muy contento con la adquisición Review: Battery monitor - A great moniter easy install and a good price $33 they have the same one for over $100 just a diff name ## Features - 【Real-Time Battery Monitoring】Displays voltage, current, power and accumulated amp-hours to help track battery status. - 【Versatile Voltage Compatibility】Compatible with a wide voltage range of 8-120V, this lead acid battery monitor works seamlessly with lithium, LiFePO4, lead acid, and NiMH batteries, catering to diverse applications and user needs. - 【Reliable Data Retention】Equipped with a power-off memory function, this battery coulometer retains capacity data even after shutdown, allowing for continuous and dependable monitoring without losing historical records. - 【Multi-Application Use】Ideal for various scenarios including RVs, solar energy storage, electric vehicles, and backup power systems, this 500A battery monitor adapts to your specific energy management requirements with ease. - 【User-Friendly Design】Weighing just 1.54 lbs and featuring a compact design with a clear LCD display, this 500A power meter is easy to install and perfect for both beginners and experienced users, ensuring long-lasting performance. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0FSKPL27D | | Best Sellers Rank | #138,240 in Automotive ( See Top 100 in Automotive ) #131 in Battery Testers | | Brand Name | Foretwinia | | Color | Red/Black | | Customer Reviews | 4.6 4.6 out of 5 stars (31) | | Included Components | Machine body, charging cable，shunt | | Manufacturer | Fore Twinia | | Measurement Type | Electrical | | Minimum Operating Voltage | 8 Volts | | Model | Twinia 500A | | Power Source | Battery Powered | | Specification Met | CE, NIST | | Style Name | Modern technological style | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Foretwinia - **Color:** Red/Black - **Min. Operating Voltage:** 8 Volts - **Power Source:** Battery Powered - **Style:** Modern technological style ## Images ![500A Battery Monitor with Shunt, 8–120V Coulomb Meter, DC Power & Capacity Monitor for LiFePO4/Lithium/Lead Acid Batteries, for RV Solar Boat Golf Cart - Image 1](https://m.media-amazon.com/images/I/71WLEvuSWJL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by S***I on April 6, 2026* Me encantó este monitor te dice todo lo que necesitas saber , info muy confiable y lo pude instalar por mis propios medios gracias a la IA es como tener un especialista al lado ayudándome imposible que no te salga todo perfecto lo estoy probando desde hace unos 4 días y la info es perfecta me marca los amp que gasta cada cosa que enchufo en el sistema el voltaje el porcentaje de carga de mi batería auxiliar de la camioneta y la energía que entra cuando se está cargando con el alternador o con el panel solar desplegable de 100 wats muy contento con la adquisición ### ⭐⭐⭐⭐⭐ Battery monitor *by G***L on March 16, 2026* A great moniter easy install and a good price $33 they have the same one for over $100 just a diff name ### ⭐⭐⭐⭐⭐ Accurate *by R***E on March 4, 2026* Works good, shunt is heavy duty --- ## 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.vu/products/792035240-500a-battery-monitor-with-shunt-8-120v-coulomb-meter-dc](https://www.desertcart.vu/products/792035240-500a-battery-monitor-with-shunt-8-120v-coulomb-meter-dc) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-09*