Nitecore UI1 Single-Slot USB Battery Charger
- 800mA max charging current, single slot
- 18650, 18350, 20700, 21700 and many more Li-ion/IMR sizes
- Micro-USB input, DC 5V/1A
- 4.2V output, intelligent mode selection
- 1.43 ounces, 4.82 inches long
- Reverse polarity, overcharge and overheat protection
- UL and CE listed
- USB cable and case included
Updated 25 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A tiny, travel-friendly Li-ion charger that runs off any USB source and covers a long list of sizes. One slot and a modest current make it slow for several batteries.
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ASIN: B083QNRRWWModel: UI1Category: Battery Chargers
Overview
A flashlight owner on the trail or a camper with a solar panel gets a palm-sized, single-slot charger that runs from any USB power source. It reads the battery and chooses its charging mode on its own.
Flexibility is its strength: power banks, solar panels and wall adapters all feed it, and it accepts a long list of Li-ion sizes. Charging is slow by design with a modest current and one slot, so a bag full of spare cells takes a long time.
Who it's for
Suited to backpackers, cyclists and everyday carry flashlight users who travel light. Anyone charging a stack of cells each night will want a multi-slot charger.
Pros and cons
- Runs from power banks and solar panels
- Accepts many Li-ion sizes
- Light enough for any pack
- Real-time charging status indicator
- One slot only
- Modest charging current
- Micro-USB rather than USB-C
- No NiMH sizes named
Performance notes
Charge time depends on cell capacity and the modest current limit, so large cells take noticeably longer than small ones. The intelligent mode selection adjusts to the battery, and the power source must supply the rated input for full speed.
Specifications
| Brand | Nitecore |
|---|---|
| Model | UI1 |
| Dimensions & fit | |
| Item Dimensions D X W X H | 1.15 x 4.82 x 1.26 inches |
| Item weight | 1.43 ounces |
| Capacity & performance | |
| Output Voltage | 4.2V |
| Output Current | 800mA max |
| Power & efficiency | |
| Input Voltage | DC 5V/1A, 5W |
| Construction & materials | |
| Color | Black |
| Compatibility & installation | |
| Compatible Devices | Li-ion/IMR 10340 to 26650, including 14500, 16340 (RCR123), 18350, 18650, 20700, 21700 |
| Included components | |
| Included Components | UI1 charger, USB cable, battery/cable case |
| Other details | |
| Number Of Ports | 1 |
| Connector Type Used On Cable | micro-USB |
| Specification Met | UL, CE |
| Special Features | Power indicator, reverse polarity, overcharge and overheat protection |
Frequently asked questions
How do I set up the Nitecore UI1?
Connect the micro-USB cable to a USB power source such as a power bank, solar panel or USB adapter, then insert one Li-ion battery. The power indicator shows battery level and charging status.
Does the Nitecore UI1 include a wall adapter?
No. The kit includes the UI1 charger, a USB cable and a battery/cable case.
Will a 26650 battery fit the Nitecore UI1?
Yes. 26650 is on the compatible list, along with 20700, 21700 and 22650.