--- product_id: 178169974 title: "Nitecore UI1 Single-Slot Intelligent Lithium-ion Battery USB Charger for 18650, 18350, 20700, 21700, 16340, 14500 and More, and Organizer" brand: "nitecore" price: "€ 24.83" currency: EUR in_stock: true reviews_count: 8 category: "Nitecore" url: https://www.desertcart.hr/products/178169974-nitecore-ui1-single-slot-intelligent-lithium-ion-battery-usb-charger store_origin: HR region: Croatia --- # 800mA max charging current Supports 18650 to 21700 Li-ion batteries USB compatible with solar & power banks Nitecore UI1 Single-Slot Intelligent Lithium-ion Battery USB Charger for 18650, 18350, 20700, 21700, 16340, 14500 and More, and Organizer **Brand:** nitecore **Price:** € 24.83 **Availability:** βœ… In Stock ## Summary > πŸ”‹ Charge smarter, stay powered longer β€” your pocket-sized energy ally! ## Quick Answers - **What is this?** Nitecore UI1 Single-Slot Intelligent Lithium-ion Battery USB Charger for 18650, 18350, 20700, 21700, 16340, 14500 and More, and Organizer by nitecore - **How much does it cost?** € 24.83 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/178169974-nitecore-ui1-single-slot-intelligent-lithium-ion-battery-usb-charger) ## Best For - nitecore enthusiasts ## Why This Product - Trusted nitecore brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Power-Packed Charging ⚑:** Delivers a robust 800mA current for rapid, efficient battery recharge. - β€’ **Smart & Safe Charging πŸ€–:** Automatically selects optimal charging mode with built-in safeguards against overcharge and overheating. - β€’ **Ultra-Portable Design πŸ‘œ:** Weighs just 1.43 ounces and fits in your palmβ€”perfect for on-the-go professionals. - β€’ **All-in-One Charging Kit πŸŽ’:** Includes charger, USB cable, and organizer case for streamlined battery management anywhere. - β€’ **Universal Battery Compatibility πŸ”‹:** Seamlessly charges a wide range of lithium-ion batteries from 10340 to 21700 sizes. ## Overview The NITECORE UI1 is a compact, intelligent single-slot USB charger designed for lithium-ion batteries ranging from 10340 to 21700 sizes. It delivers up to 800mA charging current, supports multiple USB power sources including solar panels, and features automatic charging mode selection with comprehensive safety protections. Weighing only 1.43 ounces and measuring under 5 inches, it’s engineered for portability and convenience, making it an essential tool for professionals who demand reliable power on the move. ## Description Powerful and compact, the NITECORE UI1 is a single-slot portable USB Li-ion battery charger capable of reaching a maximum charging current of 800mA and supports 18650, 18350, 20700, 21700 and various types and sizes of lithium batteries. Its power indicator provides users with real-time battery level and charging status. It also provides multiple charging safeguards to prevent reverse polarity, overcharging, and overheating. The UI1 features a micro-USB port compatible with various power sources like power banks, solar panels and USB adapters for quick and efficient charging. Weighing less than 1.43 ounces, the lightweight design of the UI1 allows you to carry this charger everywhere you go. Measuring 4.82 inches, the UI1 fits comfortably in the palm of your hand and is portable for outdoor applications.Specifications:* Input: DC 5V/1A 5W * Output Voltage: 4.2V±1% * Output Current: 800mA (max) * Compatible with : Li-ion/IMR: 10340, 10350, 10440, 10500, 12340, 12500, 12650, 13450, 13500, 13650, 14430, 14500, 14650, 16500, 16340 (RCR123), 16650, 17350, 17500,17650, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 22500, 22650, 25500, 26500, 26650 * Maximum Brightness: 5 * Dimensions: L-4.82"xW-1.15"xH-1.26"* Weight: 1.43oz Review: Easy to use and has a great charging meter. - Works great πŸ‘πŸΌ Review: Works Great - Works great with 18650 ## Features - POWERFUL CHARGER-The NITECORE UI1 reaches a single slot maximum charging current of 800mA when using 3.7V rechargeable batteries. - USB COMPATIBLE - Compatible with multiple USB inputs including solar panels, adapters, and power reservoirs for quick and efficient charging. - INTELLIGENT CHARGING - The UI1 is equipped with intelligent charging mode selection that automatically adopts the optimal charging modes for batteries. - LIGHTWEIGHT AND COMPACT - Weighing 1.43 ounces and less than 5 inches in length, the lightweight and compact size of the UI1 allows you to carry it with you on the go. - UI1 CHARGER KIT - Included in this bundle is the NITECORE UI1 21700/18650 battery charger, usb cable, and battery/cable case. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B083QNRRWW | | Amperage | 0.8 Amps | | Brand | Nitecore | | Color | Black | | Compatible Devices | Li-ion/IMR: 10340, 10350, 10440, 10500, 12340, 12500, 12650, 13450, 13500, 13650, 14430, 14500, 14650, 16500, 16340 (RCR123), 16650, 17350, 17500,17650, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 22500, 22650, 25500, 26500, 26650 | | Connector Type Used on Cable | micro-USB | | Current Rating | 0.8 Amps | | Customer Reviews | 4.6 out of 5 stars 444 Reviews | | Global Trade Identification Number | 06952506467242 | | Input Voltage | 5 Volts | | Item Dimensions D x W x H | 1.15"D x 4.82"W x 1.26"H | | Item Weight | 1.43 Ounces | | Manufacturer | NITECORE | | Mfr Part Number | UI1+ORG | | Model Number | UI1 | | Number of Ports | 1 | | Output Voltage | 4.2 Volts (DC) | | Product Dimensions | 1.15"D x 4.82"W x 1.26"H | | Specification Met | UL, CE | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Nitecore - **Color:** Black - **Item Weight:** 1.43 Ounces - **Output Voltage:** 4.2 Volts (DC) - **Product Dimensions:** 1.15"D x 4.82"W x 1.26"H ## Images ![Nitecore UI1 Single-Slot Intelligent Lithium-ion Battery USB Charger for 18650, 18350, 20700, 21700, 16340, 14500 and More, and Organizer - Image 1](https://m.media-amazon.com/images/I/71jQTskuxOL.jpg) ## Questions & Answers **Q: How does this differ from the F1? Is it intended to be an upgrade?** A: Unlike the F1, the UI1charger would be able to charge large-sized batteries like 20700, 21700 batteries & more. **Q: Can these charge the Nitecore 21700/5000 Inteligent battery?** A: UI1 is compatible with 21700 batteries. However, we recommend charging the Nitecore i series batteries through the flashlights. **Q: I would like the functionality of an intelligent usb single-slot quick battery charger for li-ion/ni-mh/ni-cd/imr. any ideas?** A: If you can do without the usb and single slot; the Eastshine S2 charger has a very informative display which I would buy again. Car plug or 110v house, has two speeds, shows charge advancement, Mah, time spent, and volts. Having those updates at a glance keeps you informed. 5 stars. **Q: Will this product charge the nl2140hp?** A: Yes. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy to use and has a great charging meter. *by S***K on October 24, 2025* Works great πŸ‘πŸΌ ### ⭐⭐⭐⭐⭐ Works Great *by E***. on February 22, 2026* Works great with 18650 ### ⭐⭐⭐⭐⭐ Battery charger *by E***. on March 5, 2026* Great product. ## Frequently Bought Together - Nitecore UI1 Single-Slot Intelligent Lithium-ion Battery USB Charger for 18650, 18350, 20700, 21700, 16340, 14500 and More,and LumenTac Battery Organizer - 2X Nitecore IMR 18350 NI18350A 700mAh 3.7V Button Top Rechargeable Battery (This is NOT a Replacement for CR123A) --- ## 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.hr/products/178169974-nitecore-ui1-single-slot-intelligent-lithium-ion-battery-usb-charger](https://www.desertcart.hr/products/178169974-nitecore-ui1-single-slot-intelligent-lithium-ion-battery-usb-charger) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-06-20*