The Nitecore UI1 is a single-slot USB-C charger built for outdoor enthusiasts and everyday users who need a compact and reliable charging solution. With support for a wide range of 3.7V Li-ion and IMR batteries—including larger cells like 20700 and 21700—the UI1 automatically adjusts between CC (Constant Current) and CV (Constant Voltage) modes to ensure safe and efficient charging. Its smart circuitry allows low current charging below 2.9V, maximizing battery health and cycle life.
Featuring an 800mA charging current, LED indicators for real-time status updates, and intelligent safeguards including reverse polarity protection, short circuit detection, and thermal regulation, the UI1 offers peace of mind in both indoor and outdoor settings. Its USB-C compatibility makes it ideal for use with solar panels, power banks, and mobile USB adaptors—ensuring your batteries stay charged, wherever you are.
Key Features:
- Wide Battery Compatibility: Supports 3.7V Li-ion/IMR batteries from 10340 to 26650, including 20700 and 21700 sizes.
- USB-C Powered: Easily connects to mobile power sources, USB adaptors, or solar panels—perfect for travel and outdoor use.
- Smart Charging Logic: Automatically switches between CC/CV modes and enables low-current charging for deeply discharged cells.
- Advanced Safety Features: Includes anti-short circuit, reverse polarity, and thermal protection with auto shutoff on full charge.
- Durable & Certified: Made of fire-retardant PC material and certified by CE, RoHS, FCC, KC, and C-TICK—insured globally by Ping An.
Compatible With:
- 3.6V/3.7V Lithium Ion IMR Batteries: 10340, 10350, 10440, 10500, 12340, 12500, 12650, 13450, 13500, 13650, 14350, 14430, 14500, 14650, 16500, 16340 (RCR123), 16650, 17350, 17500, 17650, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 25500, 26500, 26650
The Nitecore UI1 Portable USB-C Charger is the ideal choice for those who need a reliable, fast, and safe charging solution for multiple battery types.
Technical Info:
- Input – DC 5V/1A 5W
- Output - 4.2V±1%
- Output current - 1000mA (MAX)
- SIZE/TYPE COMPATIBILITY - ✔ 18650 ✔ 20700 ✔ 21700
Data Specification Sheet: Nitecore UI1 Portable USB-C Charger Manual - Nitecore UI1 Portable USB-C Charger
- USB-C Charger Cord
- User Manual
- Scratch-off validation serial number
What's in the box:
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⚠ Important Safety Warnings
Improper handling or misuse of this lithium-ion battery can result in FIRE, EXPLOSION, or THERMAL RUNAWAY, causing personal injury, property damage, or death. Users must read and follow all safety guidelines before purchase and use. Click here to review the full safety guidelines.
- Critical Warning: Never carry loose batteries in your pocket, purse, or bag. Loose batteries can come into contact with metal objects like keys or coins, causing a short circuit, which may result in severe burns, fire, or explosion. Always store or transport batteries in a protective case.
- Intended Use: This battery is designed for integration into protected battery packs with a Battery Management System (BMS) or Protection Circuit Board (PCB). It is not intended for standalone use or for e-cigarettes, vaporizers, or similar devices.
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Thermal Runaway: A chain reaction where heat from a failing battery
causes further overheating, potentially leading to fire or explosion.
- Causes: Overcharging, short circuits, physical damage, or exposure to high temperatures.
- Prevention: Use a smart charger, avoid damage, and store batteries in a cool, dry place.
- Storage & Transport: Always store batteries in protective cases to prevent accidental contact with metal objects. Never store loose batteries in pockets, purses, bags, or near conductive materials.
- Inspection: Do not use if the PVC wrapper, terminal insulator, or casing is damaged, dented, leaking, or bulging. Continued use could result in failure, fire, or explosion.
- Charging: Use a smart charger specifically designed for lithium-ion batteries and ensure the charger's voltage matches the battery's specifications. Never overcharge, over-discharge, or leave unattended while charging.
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Prohibited Activities:
- Do not expose the battery to extreme heat, fire, or liquids.
- Do not short circuit, puncture, crush, or modify the battery.
- Do not charge or discharge beyond the manufacturer’s voltage range.
- Do not dispose of in regular trash—always recycle at approved facilities.
- Emergency Response: If the battery overheats, emits smoke, or swells, move it to a non-flammable surface (e.g., sand or concrete) and stop use immediately. In case of fire, use a Class D fire extinguisher or sand. Do not use water.
Disclaimer
18650Battery.com is not responsible for any damages, injuries, or claims arising from improper use, handling, or failure to follow these safety guidelines. Lithium-ion batteries require strict adherence to all safety protocols. It is the reseller's responsibility to ensure all safety warnings and product guidelines are effectively communicated to customers. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.