Great little charger. Suits my needs just fine.
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:
⚠ Important Safety Warnings
Improper use of a battery charger can result in overcharging, short circuits, or damage to the battery, causing FIRE, EXPLOSION, or ELECTRICAL SHOCK. Users must follow all safety guidelines to ensure proper operation. Click here to review the full safety guidelines.
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Device Compatibility:
- Use the charger only for compatible battery types and sizes as specified by the charger manufacturer. Ensure the charger is appropriate for the battery chemistry, size, and protection status (e.g., unprotected or protected cells).
- Do not charge non-rechargeable batteries (e.g., alkaline or primary cells).
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Proper Use:
- Only charge batteries in a fireproof or non-flammable area. Avoid charging on beds, couches, or other flammable surfaces.
- Do not force a battery into the charger slot if it does not fit properly. This can damage the charger or battery and may result in unsafe charging conditions.
- Inspect batteries before charging: Do not charge if the battery casing, wrapper, or terminals are damaged, dented, leaking, or bulging.
- Never leave batteries unattended while charging. Monitor the charging process, and unplug the charger when charging is complete.
- Avoid exposing the charger to liquids, high heat, or direct sunlight.
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Inspection:
- Do not use the charger if the power cord, plug, or device is damaged.
- Inspect both the charger and the battery for any signs of damage before use.
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Storage & Handling:
- Keep the charger away from children and pets.
- When not in use, unplug the charger and store it in a cool, dry place.
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Prohibited Activities:
- Do not modify or disassemble the charger.
- Do not attempt to repair a damaged charger—replace it with a new one.
- Avoid using extension cords or adapters that exceed the manufacturer’s recommendations.
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Emergency Response:
- If the charger or battery emits smoke, sparks, or a burning smell, disconnect the power immediately and move the battery and charger to a safe area.
- In case of fire, use a Class D fire extinguisher or sand to extinguish the flames.
Disclaimer
IMR Batteries is not responsible for any damages, injuries, or claims arising from improper use, handling, or failure to follow these safety guidelines. Battery chargers must only be used with compatible battery types and operated in accordance with manufacturer instructions. It is the reseller's responsibility to ensure all safety warnings and product guidelines are effectively communicated to their customers. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.
Customer Reviews
Overall rating: 5.0 / 5 from 4 reviews.
works just like it should
Charges fast and works every time without having to sweet talk it!
Everything works as expected. The charger works well and stays in place well due to the shape of the base. The batteries are top notch and have charged and discharged evenly. The battery cases are great, they seem well built and solid.