--- product_id: 808156818 title: "Smart Lithium Battery Capacity Detection Tester Lithium Battery Capacity Detection Tester DT20W 0-420V Tuya WiFi DC Current Voltage Coulomb Power Meter 30A" brand: "paaruter" price: "621 kr" currency: DKK in_stock: true category: "Paaruter" url: https://www.desertcart.dk/products/808156818-smart-lithium-battery-capacity-detection-tester-lithium-battery-capacity-detection store_origin: DK region: Denmark --- # 0-420V voltage range Tuya WiFi real-time cloud monitoring 30A bidirectional current detection Smart Lithium Battery Capacity Detection Tester Lithium Battery Capacity Detection Tester DT20W 0-420V Tuya WiFi DC Current Voltage Coulomb Power Meter 30A **Brand:** paaruter **Price:** 621 kr **Availability:** ✅ In Stock ## Summary > 🔋 Power up your battery IQ — never miss a charge or discharge beat! ## Quick Answers - **What is this?** Smart Lithium Battery Capacity Detection Tester Lithium Battery Capacity Detection Tester DT20W 0-420V Tuya WiFi DC Current Voltage Coulomb Power Meter 30A by paaruter - **How much does it cost?** 621 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/808156818-smart-lithium-battery-capacity-detection-tester-lithium-battery-capacity-detection) ## Best For - paaruter enthusiasts ## Why This Product - Trusted paaruter brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart WiFi Connectivity:** Seamlessly upload hourly data to the cloud via Tuya WiFi for remote battery insights. - • **Customizable Alerts & Settings:** Set personalized battery percentage thresholds and overvoltage/low voltage alarms to avoid surprises. - • **Intuitive Bi-Directional Display:** Clear charging (+) and discharging (-) current/power symbols for instant status recognition. - • **Precision Voltage & Current Tracking:** Monitor battery health with 0-420V range and ±30A current detection for charging/discharging. - • **User-Friendly Firmware & App Upgrades:** Easily update system and app with enhanced graphical battery percentage and real-time data curves. ## Overview The Smart Lithium Battery Capacity Detection Tester DT20W offers precise voltage (0-420V) and bidirectional current (±30A) measurement with Tuya WiFi connectivity for real-time cloud monitoring. It features customizable battery percentage and voltage alarms, intuitive charging/discharging indicators, and supports firmware and app upgrades for enhanced user experience. ## Description Paaruter 5. The system sound can be turned off or on, long the "M" key to enter the background settings6. Language selection, long the "M" key to enter the background settingsAPP upgrade instructions:1. Increase battery percentage display (numerical and graphical display)2. Charging as current, power not change, discharging: The symbol - be displayed in front of the current power value, for example, charging 12.0V 1.00A 12.00W, discharging: 12.0V -1.00A -12.00W is displayed3. Graph curve: Real time data can be opened, and the data change in real timeAll data is uploaded to the cloud once an hour and displayed, calculated on average every hourSpecifications: WIFI online version 30AColor: BlackMaterial: plasticPackage Contents:1 * Lithium Battery Capacity TesterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. ## Features - 1. The startup information has changed. If you need to turn off information monitoring, please long the "M" key to enter the background and turn off the information prompt! - Product firmware upgrade instructions - 2. Battery percentage (100% full voltage and 0% low battery voltage) and OVP (overvoltage alarm), (low voltage alarm) need to be set separately, which can be set to the same value or different values - 3. This product is a bidirectional current, with a+symbol for charging and a - symbol for discharging, changed to the direction of the (charging position ← symbol, discharging → symbol) - 4. When encountering WiFi connection failure, long the"M" key to enter the background and select the WiFi reset option ## Images ![Smart Lithium Battery Capacity Detection Tester Lithium Battery Capacity Detection Tester DT20W 0-420V Tuya WiFi DC Current Voltage Coulomb Power Meter 30A - Image 1](https://m.media-amazon.com/images/I/51PEjZRiUZL.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.dk/products/808156818-smart-lithium-battery-capacity-detection-tester-lithium-battery-capacity-detection](https://www.desertcart.dk/products/808156818-smart-lithium-battery-capacity-detection-tester-lithium-battery-capacity-detection) --- *Product available on Desertcart Denmark* *Store origin: DK* *Last updated: 2026-08-09*