{"product_id":"nitecore-um4-4-slot-smart-battery-charger","title":"NITECORE UM4 4-Slot USB-C Smart Battery Charger - 1500mA Fast Charge with LCD Display, Internal Resistance Test \u0026 IMR Repair for Li-ion, IMR, LiFePO4, NiMH \u0026 NiCd Batteries (Includes Type-C Cable)","description":"\u003ch3\u003e\u003cspan class=\"\"\u003e【Product Description】\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eExperience the pinnacle of smart battery charging with the NITECORE UM4.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eDesigned for professionals and battery enthusiasts, the UM4 is a 4-slot intelligent charger that goes far beyond simply topping up your cells.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eFeaturing a crystal-clear\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ehigh-definition LCD display\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, the UM4 provides real-time data for all four slots, including charging current, voltage, battery capacity, and even a\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eprofessional internal resistance health check\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e. It intelligently analyzes your batteries and displays\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e\"Good\" or \"Poor\"\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003ebased on internal resistance, letting you instantly spot weak or faulty cells that need to be replaced.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eCharging at a blazing\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e1500mA per slot\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e(3000mA total in QC mode), the UM4 can bring a 3500mAh battery to 80% in just 2 hours! With its proprietary\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eIMR Battery Repair Mode\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e0V Activation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, it can safely revive over-discharged IMR cells that other chargers reject. By long-pressing the C button, you can manually switch between\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e3.7V, 4.2V, 4.35V, and 3.2V (LiFePO4)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003evoltage modes to perfectly match your specific battery chemistry.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003ePowered by a modern\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eUSB-C port\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, it can be energized by wall adapters, power banks, or solar panels, making it the ultimate travel-ready charging station.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cem\u003e\u003cspan class=\"\"\u003e( IMPORTANT: This listing includes the charger and USB-C cable. Rechargeable batteries are NOT included.)\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003e【Key Features】\u003c\/span\u003e\u003c\/h3\u003e\n\u003col start=\"1\"\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e1500mA Ultra-Fast Charging\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Delivers a massive 1500mA per slot (3000mA total with QC adapter), charging a 3500mAh Li-ion battery to 80% in just 2 hours—7 times faster than standard chargers.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProfessional Battery Health Check\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: The LCD screen monitors internal resistance in real-time and displays\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e\"Good\"\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e\"Poor\"\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, helping you instantly identify degraded or aging cells.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHigh-Definition LCD Display\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Crystal-clear screen shows real-time charging mode, voltage, current, charged capacity, and battery type for each of the 4 independent slots.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eMulti-Chemistry \u0026amp; Voltage Support\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Automatically detects 3.6V\/3.7V Li-ion, IMR, 1.2V NiMH, and NiCd. Manual selection supports 4.35V high-voltage cells and 3.2V LiFePO4 batteries.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eIMR Battery Repair \u0026amp; 0V Activation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: If you insert an over-discharged IMR battery, the screen will display \"EE EE\" prompting you to long-press the V button to enter Repair Mode. This revives dead batteries safely.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eReverse Polarity \u0026amp; Short Circuit Protection\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: The built-in intelligent chip detects improper insertion or short circuits, flashing \"EE\" on the screen to alert you instantly.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eUniversal USB-C Input\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Powered by any standard 5V\/2A+ wall adapter, power bank, or solar panel, making it perfect for home, travel, and outdoor use.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eEnergy-Saving LCD \u0026amp; Flame-Retardant Shell\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: The LCD screen automatically dims after 3 minutes to save power, and the sturdy PC flame-retardant casing ensures complete safety in complex environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003e【Parameters \u0026amp; Specifications】\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eBrand\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: NITECORE\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eModel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: UM4\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eInput\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: 5V=2A \/ QC (9V or 12V) (USB-C)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eOutput Current\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: 3000mA (Max Total) \/ 1500mA (Max Single Slot)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCharging Modes\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: CC \/ CV \/ -dV\/dt\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCompatible Chemistries\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Li-ion (3.6V\/3.7V), IMR, LiFePO4 (3.2V), NiMH (1.2V), NiCd (1.2V)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCompatible Sizes\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: 10440, 14500, 14650, 16340, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eLCD Display\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Real-time voltage, current, capacity, internal resistance, and battery type\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eDimensions\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: 143mm × 103mm × 45mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eWeight\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: 195g (Without cable and batteries)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePackage Content\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: UM4 Charger, USB-C Cable, User Manual\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003e【Applications】\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProfessional Battery Tester\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Quickly assess battery health via internal resistance (Good\/Poor).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eOutdoor Enthusiasts\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Charge via power banks and solar panels using the USB-C input.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eVape \u0026amp; Flashlight Users\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Fast-charging high-drain 18650\/21700 Li-ion cells.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHigh-Voltage Specialists\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Perfect for 4.35V high-voltage cells and 3.2V LiFePO4 batteries.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003e【Frequently Asked Questions (FAQ)】\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ1: Does this charger come with batteries?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"\"\u003eA1:\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNO.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eThe NITECORE UM4 includes the charger and a USB-C cable. Batteries are sold separately.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ2: How does the internal resistance test work?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"\"\u003eA2: After inserting the battery, the charger automatically measures its internal resistance. If it is below 250mΩ, it shows \"Good\". If it exceeds 250mΩ, it shows \"Poor\", indicating a degraded or unhealthy cell.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ3: How do I charge a 4.35V or LiFePO4 battery?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"\"\u003eA3: Long-press the \"C\" button to enter the setup mode. Use the \"V\" button to manually cycle through 3.7V, 4.2V, 4.35V, and 3.2V (LiFePO4) options, and confirm your selection.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ4: What does \"EE EE\" mean on the screen?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"\"\u003eA4: \"EE EE\" indicates that the battery is over-discharged (0V) or inserted in reverse. For over-discharged IMR batteries, long-press the \"V\" button to enter the IMR Repair Mode to safely revive it.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ5: Can I use it to charge my 21700 batteries?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"\"\u003eA5: Yes, the UM4 features wider slots that perfectly accommodate 21700 and 26650 batteries, including those with protection boards.\u003c\/span\u003e\u003c\/p\u003e","brand":"Nitecore","offers":[{"title":"NITECORE UM4 Charger (Standard Kit) - Includes USB-C Cable","offer_id":51578911588598,"sku":"OAS1415","price":38.98,"currency_code":"USD","in_stock":true},{"title":"NITECORE UM4 Charger + QC3.0 Fast US Wall Adapter (Full Kit)","offer_id":51578911621366,"sku":"OAS1416","price":48.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/2753\/6886\/files\/nitecore-um4-4-slot-usb-c-smart-charger-main.webp?v=1788425139","url":"https:\/\/oneandes.com\/products\/nitecore-um4-4-slot-smart-battery-charger","provider":"OneAndes","version":"1.0","type":"link"}