--- product_id: 682939363 title: "Power-Z KM003C Portable USB-C Fast Charge Tester PD3.1 QC5.0 Digital Voltmeter & Ammeter Current Tester" brand: "chargerlab" price: "¥36003" currency: JPY in_stock: true reviews_count: 5 category: "Charger Lab" url: https://www.desertcart.jp/products/682939363-power-z-km003c-portable-usb-c-fast-charge-tester-pd3 store_origin: JP region: Japan --- # 240W max PD3.1 power 1.54-inch high-contrast LCD Dual USB-C ports + HID PC link Power-Z KM003C Portable USB-C Fast Charge Tester PD3.1 QC5.0 Digital Voltmeter & Ammeter Current Tester **Brand:** chargerlab **Price:** ¥36003 **Availability:** ✅ In Stock ## Summary > ⚡ Power up your USB-C game with precision and style! ## Quick Answers - **What is this?** Power-Z KM003C Portable USB-C Fast Charge Tester PD3.1 QC5.0 Digital Voltmeter & Ammeter Current Tester by chargerlab - **How much does it cost?** ¥36003 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/682939363-power-z-km003c-portable-usb-c-fast-charge-tester-pd3) ## Best For - chargerlab enthusiasts ## Why This Product - Trusted chargerlab brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Crystal Clear Display:** Large 1.54-inch gravity-rotating LCD ensures effortless real-time voltage and current monitoring. - • **Next-Gen Power Delivery:** Supports cutting-edge USB PD3.1 up to 240W for future-proof fast charging. - • **Seamless PC Integration:** USB-C HID port enables advanced data retrieval and analysis with official PC software. - • **All-in-One Protocol Analyzer:** Comprehensive tests including voltage, current, capacity, e-marker, PDO, and protocol analysis. - • **Precision Engineering Inside:** ARM Cortex M4 processor with 20-bit ADC delivers ultra-accurate power measurements. ## Overview The ChargerLAB Power-Z KM003C is a professional-grade USB-C fast charge tester featuring the latest USB PD3.1 protocol support up to 240W. It boasts a large 1.54-inch high-contrast LCD with gravity rotation, dual USB-C ports for input/output, and an HID port for PC connectivity. Powered by an ARM Cortex M4 processor and 20-bit ADC, it offers precise voltage, current, and protocol analysis, making it an indispensable tool for tech-savvy professionals and power users. ## Description Product description As the upgraded version of USB PD3.0 protocol, the new USB PD3.1 protocol can support up to 48V, And the charging power can reach 240W. According to the documents from USB-IF, the USB PD3.1 can support extended power range (EPR) of 28V, 36V, 48V and three sets of adjustable voltage supply (AVS). Additionally, starting from version 1.9.2, KM003C has added support for the latest SPR AVS under the PD 3.2 protocol. Review: Does the job. I recommend! - Does the job to tell what your USB-C to USB-C really is. Is it a pure USB x or a Thunderbolt 3 or 4? This device will tell you. Also allows to make precise power consumption measurement over a period of time. Kudos to the manufacturer. Such a device is not easy to find. I recommend. Review: Useful tool - Very good for protocol analysis. A little on the pricey side. ## Features - PD3.1: This is the official Power Z product page, created by ChargerLAB. This tester is the latest version and can support PD3.1. - Larger display: It has a larger LCD display (1.54 inches) than the previous generation and can support gravity rotation. The high-contrast user interface makes it easier to get what you need. - Multiple tests: This tester can support multiple tests, including voltage/current detection, capacity/energy test, e-marker test, PDO test, protocol test, etc. - More powerful: This tester integrates an ARM Cortex M4 processor and a 20-bit ADC. It supports up to 50V, 6A (240W in PD) and a USB PD protocol analyzer. The PC software can retrieve 10 million data at the same time. - Designed for USB-C: It is equipped with two USB-C ports for power input and output and an additional HID port (USB-C) for connecting to PC and power supply. - Technical support: This model supports English and Chinese. Please visit our official website to get the manual and PC software (for update and further analysis). ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BJ24PVNJ | | Best Sellers Rank | #6,436 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #15 in Voltage Testers | | Brand | ChargerLAB | | Brand Name | ChargerLAB | | Color | Silver | | Colour | Silver | | Customer Reviews | 4.6 out of 5 stars 233 Reviews | | Included Components | Super capacitor | | Item Dimensions | 35 x 9 x 36 millimeters | | Item Weight | 0.58 Ounces | | Item dimensions L x W x H | 35 x 9 x 36 millimeters | | Item weight | 0.58 Ounces | | Manufacturer | ChargerLAB | | Measurement Type | Voltmeter, ammeter | | Model | KM003C | | Number of Items | 1 | | Part Number | KM003C | | Power Source | Usb Type-c | | Power source | Usb Type-c | | Specification Met | FCC | | Style | Modern | | Style Name | Modern | | UPC | 756166474123 | ## Product Details - **Brand:** ChargerLAB - **Colour:** Silver - **Item weight:** 0.58 Ounces - **Power source:** Usb Type-c - **Style:** Modern ## Images ![Power-Z KM003C Portable USB-C Fast Charge Tester PD3.1 QC5.0 Digital Voltmeter & Ammeter Current Tester - Image 1](https://m.media-amazon.com/images/I/61TMq46q3bL.jpg) ## Questions & Answers **Q: I need to test the power on pc ports while using 20gbps external drives. will this support that? if not how high will it go?** A: Yes, it works. I tested it with a Lexar NM620 512GB M.2 NVMe SSD in an Silverstone MS12 external USB 3.2 Gen 2x2 20Gbps enclousure. Normaly i get 2100MBps read/write speeds. When i use the Power-Z to measure the power consumption i get read speeds about 1600MBps and 2000MBps write speed. **Q: Does this test for faulty/slow (usb 2.0) cables aswell? i need something to verify usb-c cables are 5/10/20/40gbps.** A: The tester can detect the E-Marker Chip of the cable, which can display its specs info, such as charging speed and data transmission speed. But most USB 2.0 is not equipped with E-Marker Chip, so the tester cannot test it. **Q: Can i use a usb-a adapter to test usb-a ports?** A: It can support testing USB-A devices using a USB-C to USB-A cable. You can also use a USB-A adapter, but test results may be affected by the adapter. **Q: How to test chargers with attached cable? Is there a male to female adapter included?** A: Firstly, there is no male to female adaptor included, but you can also test the charger with attached cable. Just put the tester between the load (like your laptops, phones) and the attached USB-C cable. Or simply insert the attached cable into the USB-C Female (Receptacle) of KM003C and connect the tester to an independent power supply. For more tech support info, you can visit: https://www.chargerlab.com/km003c-km002c-technical-support/ ## Customer Reviews ### ⭐⭐⭐⭐⭐ Does the job. I recommend! *by F***E on 14 May 2025* Does the job to tell what your USB-C to USB-C really is. Is it a pure USB x or a Thunderbolt 3 or 4? This device will tell you. Also allows to make precise power consumption measurement over a period of time. Kudos to the manufacturer. Such a device is not easy to find. I recommend. ### ⭐⭐⭐⭐⭐ Useful tool *by U***T on 18 July 2026* Very good for protocol analysis. A little on the pricey side. ### ⭐⭐⭐⭐⭐ Auto detect power mode *by T***T on 6 July 2026* Works great. Screen is big enough to show all the data on the transfer. Easily select between modes and there is an auto detect mode. If you have a newer phone like the galaxy s25 or the iPhone 16/17 it will auto detect amps and wattage to deliver to the device without overcharging or undercharging. I believe there is even an "iPhone mode" but I haven't used it yet. ## Frequently Bought Together - ChargerLAB Power-Z KM003C Portable USB-C Fast Charging Tester PD3.1 QC5.0 Digital Voltmeter & Ammeter Power Bank Tester - Treedix USB Cable Tester Board USB Cable Checker Data Wire with Acrylic Case Charging Test Data Line Type-C Micro Type A Type B - BitTradeOne USB Cable Checker2 [Assembled] Supported USB MiniB/microB/TypeC Cables/USB Digital Tester/USB c Cable Tester/USB Cable Tester Tool / H0.5xW3.5xD2.1 inch ADUSBCIM --- ## 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.jp/products/682939363-power-z-km003c-portable-usb-c-fast-charge-tester-pd3](https://www.desertcart.jp/products/682939363-power-z-km003c-portable-usb-c-fast-charge-tester-pd3) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-13*