--- product_id: 41284237 title: "Fishonly Digital Multimeter USB Power Meter Tester Current Voltage Monitor Detector Charging for Phone, Charger, Power Bank, PC, Tablets" brand: "fishonly" price: "€ 43.73" currency: EUR in_stock: true category: "Misc." url: https://www.desertcart.pt/products/41284237-fishonly-digital-multimeter-usb-power-meter-tester-current-voltage-monitor store_origin: PT region: Portugal --- # Fishonly Digital Multimeter USB Power Meter Tester Current Voltage Monitor Detector Charging for Phone, Charger, Power Bank, PC, Tablets **Brand:** fishonly **Price:** € 43.73 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Fishonly Digital Multimeter USB Power Meter Tester Current Voltage Monitor Detector Charging for Phone, Charger, Power Bank, PC, Tablets by fishonly - **How much does it cost?** € 43.73 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/41284237-fishonly-digital-multimeter-usb-power-meter-tester-current-voltage-monitor) ## Best For - fishonly enthusiasts ## Why This Product - Trusted fishonly brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Fishonly Digital Multimeter USB Power Meter Tester Current Voltage Monitor Detector Protect your devices When your car charger, home charger or usb interface on PC is abnormal, your charging phone or other devices may be destroyed too . This USB multimeter with led display and three warning modes will provide protection for your expensive devices. Test the quality of your device When you buy a new phone, charger or cable, just connect it with this tester to see the voltage and current, it's a good way to check the quality of your goods with the data. Three warning modes Fast sound for over voltage & current. Slow sound for low power & voltage. Siren sound for power leakage. Specification: Voltage: 3.7V--7.4V Current: 0--5.1A Max power calculated: 999.99Wh Max capacity calculated: 999.99mAh First time to short press the key: show the capacity Second time to short press the key: show the power Long press the key: exact current ( show in three numbers) Long press the key in power mode: Cleared to 0 Long press the key in capacity mode: Cleared to 0 Warning when voltage is less than 4.5V or over than 5.8V, current is over 5A. Package Includes: 1x Digital power meter tester ## Features - <b> Digital Led Display </b> -The current and voltage will be showed clearly in the digital led display when it is connected devices. And also could calculate output power. <br> - <b> Warning Sound </b> - This usb digital power tester have three different warning sound for over-current & over-voltage, low-voltage or power leakage, to remind you to protect your expensive device when charging. <br> - <b> Monitor and Tester for Most Device </b> - This digital power meter could monitor and test most of device, such as phones, charger, power bank, ipad, pc, tablet, etc . Especially helpful to use for test the quality of your new buying device. <br> - <b> Auto Disconnection </b> - When you use the usb voltage tester to connect the power and your devices, it will automatically disconnected to protect your devices if the current or voltage is abnormal. <br> - <b> USB Interface </b> - It could be connected with any usb device. Mini size and portable. <br> ## Images ![Fishonly Digital Multimeter USB Power Meter Tester Current Voltage Monitor Detector Charging for Phone, Charger, Power Bank, PC, Tablets - Image 1](https://images-na.ssl-images-amazon.com/images/I/41ZldS0dyIL.jpg) ![Fishonly Digital Multimeter USB Power Meter Tester Current Voltage Monitor Detector Charging for Phone, Charger, Power Bank, PC, Tablets - Image 2](https://images-na.ssl-images-amazon.com/images/I/51wX110AlXL.jpg) ![Fishonly Digital Multimeter USB Power Meter Tester Current Voltage Monitor Detector Charging for Phone, Charger, Power Bank, PC, Tablets - Image 3](https://images-na.ssl-images-amazon.com/images/I/41HgVgI16zL.jpg) ![Fishonly Digital Multimeter USB Power Meter Tester Current Voltage Monitor Detector Charging for Phone, Charger, Power Bank, PC, Tablets - Image 4](https://images-na.ssl-images-amazon.com/images/I/4185Vt298VL.jpg) ![Fishonly Digital Multimeter USB Power Meter Tester Current Voltage Monitor Detector Charging for Phone, Charger, Power Bank, PC, Tablets - Image 5](https://images-na.ssl-images-amazon.com/images/I/517XDfQ2ZkL.jpg) --- ## 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.pt/products/41284237-fishonly-digital-multimeter-usb-power-meter-tester-current-voltage-monitor](https://www.desertcart.pt/products/41284237-fishonly-digital-multimeter-usb-power-meter-tester-current-voltage-monitor) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-10-25*