--- product_id: 532367702 title: "USB Power Meter Tester, A3 USB Tester, Type-C Current and Voltage Monitor, USB Safety Tester, PD Battery Capacity Meter, Digital Color LCD Display Multimeter" brand: "juweiat" price: "€ 32.59" currency: EUR in_stock: true reviews_count: 7 category: "Juweiat" url: https://www.desertcart.pt/products/532367702-usb-power-meter-tester-a3-usb-tester-type-c-current store_origin: PT region: Portugal --- # 7A max current 1.44" color LCD 0-99999mAh capacity USB Power Meter Tester, A3 USB Tester, Type-C Current and Voltage Monitor, USB Safety Tester, PD Battery Capacity Meter, Digital Color LCD Display Multimeter **Brand:** juweiat **Price:** € 32.59 **Availability:** βœ… In Stock ## Summary > πŸ”Œ Power up your charging IQ β€” never settle for slow or unsafe again! ## Quick Answers - **What is this?** USB Power Meter Tester, A3 USB Tester, Type-C Current and Voltage Monitor, USB Safety Tester, PD Battery Capacity Meter, Digital Color LCD Display Multimeter by juweiat - **How much does it cost?** € 32.59 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/532367702-usb-power-meter-tester-a3-usb-tester-type-c-current) ## Best For - juweiat enthusiasts ## Why This Product - Trusted juweiat brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Vibrant Color Display:** 1.44-inch TFT high-def screen delivers real-time, easy-to-read data that keeps you in control at a glance. - β€’ **Portable Power Detective:** Compact, lightweight design fits in your tech arsenal for on-the-go diagnostics and instant FOMO-proof gadget checks. - β€’ **Precision Power Insights:** Track voltage (3.6-32V), current (up to 7A), and power with razor-sharp accuracy for smarter charging decisions. - β€’ **Universal USB Compatibility:** Seamlessly supports USB-A, Type-C, Micro USB, and quick charge protocols QC2.0/QC3.0 for all your devices. - β€’ **Robust Build with Premium Materials:** 18K gold-plated connectors and pure copper knurled columns ensure durability and superior conductivity. ## Overview The USB Power Meter Tester A3 is a sleek, gold-plated multimeter with a 1.44-inch color LCD that precisely monitors voltage (3.6-32V), current (up to 7A), power, capacity, and temperature across USB-A, Type-C, and Micro USB ports. Designed for professionals and tech enthusiasts, it supports QC2.0/QC3.0 quick charge protocols and offers real-time diagnostics in a compact, durable form factor. ## Description Technical parameters: Voltage measuring range: 3.6V ~ 32.00 V Resolution precision: 0.01 V Current measuring range: 0.000A ~ 7.000 A Resolution precision: 0.001 A Power cumulative range: 0 ~ 99999 WH Resolution precision: Β±(0.8%+3 digit) Capacity range : 0 ~ 99999 mAH Resolution precision: Β±(0.2%+1 digit) Temperature：-10β„ƒο½ž100℃/0β„‰ο½ž200℉ Resolution precision:Β±3℃/Β±6℉ D+ Voltage : 0.000V ~ 2.99 V Resolution precision: 0.01 V D- Voltage : 0.000V ~ 2.99 V Resolution precision: 0.01 V Load impedance: 0 ~ 999 ohm Resolution precision: 1 ohm Power metering range: 0 ~ 155W Timing maximum time: 99 H 59 M 59 S Resolution precision: 1 S Screen brightness setting:0-5 level Auto screen off time:1-9mins Display screen:1.44 Inch color LCD display Quick charge recognition mode:QC2.0 QC3.0 Refresh rate:2Hz Time to refresh: > 500 ms/time > 500 ms/times Measurement rate: 0.5 times/s Use large equipment of the same metal manganese bronze sampling resistor (1.0 mm diameter metal manganese bronze material <0.05R) Product size: 74.5 x 32.3 x 10.0 mm Since the power flow: <0.003 A （ <3mA οΌ‰ Working temperature: -10β„ƒο½ž100℃/0β„‰ο½ž200℉ Working humidity: 10 ~ 80 (no doubt) The pressure of work: 80 ~ 106 kpa Review: Essential Tool for Anyone Using USB Devices! - This USB power meter (likely the Color A3 or similar model) has quickly become one of my most used gadgets. It's an incredibly handy and portable analytical tool that provides crucial insights into the performance of my USB chargers, cables, and devices. Setting it up is simply plug-and-play. You just connect it in-line between your power source (charger, power bank, etc.) and your USB device. The clear, bright color display immediately shows you key metrics like voltage (V), current (A), power (W), capacity (mAh), and energy (Wh). Some models also track data lines or have additional features. I've used this meter to: * Test if chargers are delivering their rated output. * Check the quality of different USB cables and see which ones support faster charging. * Monitor the power consumption of various gadgets. * Troubleshoot charging issues by seeing exactly what voltage and current are being drawn. It's a fantastic way to identify under-performing chargers or cables that might be slowing down your charging speeds or not providing stable power. The portability is a big plus – I can easily toss it in my bag and use it anywhere. Highly recommended! Review: Does what it says - I just wanted a simple power meter for my USB devices to see what kind of power draw they're actually pulling. I picked this one because I thought that it would give a bit more feedback on Power Delivery settings. Unfortunately, it is only capable of identifying QC2 and QC3 chargers. Everything else comes up as unknown. The instructions are terribly translated if you can find them. So far, it has worked with the cables and chargers I've plugged it into. I'll update if I do run into any manufacturing problems. ## Features - This multi-function instrument uses 1.44-inch TFT high-definition color screen, the surface adopts 18K gold-plated technology, four metal pure copper knurled columns, exquisite and compact, and supports USB-A public/Type-C/Micro USB and other multi-port conversion applications to monitor the voltage, current, power, electricity, capacity, temperature, internal resistance and other data during charging on a single screen. - [New Upgrade function]: This USB meter has been upgraded and can be tested between 3.600-32.00V, with a maximum current of 7.000A ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BQVC7JW3 | | Best Sellers Rank | #803,231 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,343 in Multi Testers | | Brand | JUWEIAT | | Color | Gold | | Date First Available | December 22, 2022 | | Item Weight | 1.76 ounces | | Item model number | ATORCH-A3 | | Manufacturer | ATORCH | | Measurement Type | Multimeter | | Min. Operating Voltage | 3.6 Volts | | Package Dimensions | 5.2 x 3.98 x 0.83 inches | | Power Source | Battery Powered | | Specification Met | CE, RoHS | | Style | Modern | | UPC | 768484336052 | | Upper Temperature Rating | 100 Degrees Celsius | ## Product Details - **Brand:** JUWEIAT - **Color:** Gold - **Min. Operating Voltage:** 3.6 Volts - **Power Source:** Battery Powered - **Style:** Modern ## Images ![USB Power Meter Tester, A3 USB Tester, Type-C Current and Voltage Monitor, USB Safety Tester, PD Battery Capacity Meter, Digital Color LCD Display Multimeter - Image 1](https://m.media-amazon.com/images/I/51yxBzaPEGL.jpg) ![USB Power Meter Tester, A3 USB Tester, Type-C Current and Voltage Monitor, USB Safety Tester, PD Battery Capacity Meter, Digital Color LCD Display Multimeter - Image 2](https://m.media-amazon.com/images/I/615mDVKK1rL.jpg) ![USB Power Meter Tester, A3 USB Tester, Type-C Current and Voltage Monitor, USB Safety Tester, PD Battery Capacity Meter, Digital Color LCD Display Multimeter - Image 3](https://m.media-amazon.com/images/I/71SuHI3Cg+L.jpg) ![USB Power Meter Tester, A3 USB Tester, Type-C Current and Voltage Monitor, USB Safety Tester, PD Battery Capacity Meter, Digital Color LCD Display Multimeter - Image 4](https://m.media-amazon.com/images/I/51865QUhrAL.jpg) ![USB Power Meter Tester, A3 USB Tester, Type-C Current and Voltage Monitor, USB Safety Tester, PD Battery Capacity Meter, Digital Color LCD Display Multimeter - Image 5](https://m.media-amazon.com/images/I/61bpqD0iyVL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Essential Tool for Anyone Using USB Devices! *by R***Z on May 17, 2025* This USB power meter (likely the Color A3 or similar model) has quickly become one of my most used gadgets. It's an incredibly handy and portable analytical tool that provides crucial insights into the performance of my USB chargers, cables, and devices. Setting it up is simply plug-and-play. You just connect it in-line between your power source (charger, power bank, etc.) and your USB device. The clear, bright color display immediately shows you key metrics like voltage (V), current (A), power (W), capacity (mAh), and energy (Wh). Some models also track data lines or have additional features. I've used this meter to: * Test if chargers are delivering their rated output. * Check the quality of different USB cables and see which ones support faster charging. * Monitor the power consumption of various gadgets. * Troubleshoot charging issues by seeing exactly what voltage and current are being drawn. It's a fantastic way to identify under-performing chargers or cables that might be slowing down your charging speeds or not providing stable power. The portability is a big plus – I can easily toss it in my bag and use it anywhere. Highly recommended! ### ⭐⭐⭐⭐ Does what it says *by J***G on August 8, 2024* I just wanted a simple power meter for my USB devices to see what kind of power draw they're actually pulling. I picked this one because I thought that it would give a bit more feedback on Power Delivery settings. Unfortunately, it is only capable of identifying QC2 and QC3 chargers. Everything else comes up as unknown. The instructions are terribly translated if you can find them. So far, it has worked with the cables and chargers I've plugged it into. I'll update if I do run into any manufacturing problems. ### ⭐⭐⭐⭐⭐ Really nice and useful. *by R***. on October 1, 2025* I really like this unit, I use it often. Interesting what I've learned. For one thing (surprisingly) there is a big difference in USB cables. Most cables won't fast charge, others vary in current. For another thing, when a phone says it is fully charged, it really isn't. Current continues to flow for another half hour. I have a multicharging unit, and there is a big difference with which socket I connect to. With 2 or more connected, the charger won't charge at high speed (9v). Unit has everything you could possibly want to measure. ## Frequently Bought Together - USB Power Meter Tester, A3 USB Tester, Type-C Current and Voltage Monitor, USB Safety Tester, PD Battery Capacity Meter, Digital Color LCD Display Multimeter - Eversame 2 in 1 Type C USB Tester Color Screen LCD Digital Multimeter, USB C Voltage Current Voltmeter Amp Volt Ammeter Detector USB Cable Charger Indicator DC3.6-30V/0-5.1A - Treedix USB Cable Tester Board USB Cable Checker Data Wire with Acrylic Case Charging Test Data Line Type-C Micro Type A Type B --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/532367702-usb-power-meter-tester-a3-usb-tester-type-c-current](https://www.desertcart.pt/products/532367702-usb-power-meter-tester-a3-usb-tester-type-c-current) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-06-09*