How does this differ from the F1? Is it intended to be an upgrade?

Unlike the F1, the UI1charger would be able to charge large-sized batteries like 20700, 21700 batteries & more.

Can these charge the Nitecore 21700/5000 Inteligent battery?

UI1 is compatible with 21700 batteries. However, we recommend charging the Nitecore i series batteries through the flashlights.

I would like the functionality of an intelligent usb single-slot quick battery charger for li-ion/ni-mh/ni-cd/imr. any ideas?

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.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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UI1 Single-Slot Intelligent Lithium-ion Battery USB Charger for 18650, 18350, 20700, 21700, 16340, 14500 and More, and Organizer

Product ID: 178169974

Details

Brand
Nitecore
Color
Black
Item Weight
1.43 ounces
Output Voltage
4.2
Product Dimensions
1.15"D x x

⚡800mA max charging current

🔋Supports 20+ Li-ion battery types

🔌Universal USB input compatibility

20856CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Charge smarter, travel lighter — power your day with Nitecore UI1!

POWER PACKED CHARGING ⚡ - Delivers a robust 800mA current for rapid, efficient battery recharge.
ANYWHERE USB CONVENIENCE 🔌 - Works with power banks, solar panels, and adapters for on-the-go power boosts.
COMPACT FEATHERLIGHT DESIGN 👜 - Weighs just 1.43 oz and fits in your palm—perfect for busy professionals on the move.
UNIVERSAL BATTERY COMPATIBILITY 🔋 - Seamlessly charges a wide range of Li-ion batteries from 10340 to 21700 sizes.
SMART SAFE CHARGING INTELLIGENCE 🧠 - Automatically selects optimal charging modes with built-in safeguards against overcharge and overheating.

The Nitecore UI1 is a sleek, single-slot USB lithium-ion battery charger delivering up to 800mA charging current. Compatible with over 20 battery sizes including 18650 and 21700, it features intelligent charging modes and multiple safety protections. Ultra-lightweight at 1.43 ounces and compact under 5 inches, it’s designed for professionals who demand reliable, portable power solutions anywhere.

Specifications

ASIN	B083QNRRWW
Amperage	0.8 A
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 A
Customer Reviews	4.5 4.5 out of 5 stars (452)
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_of_direct_current
Specification Met	UL, CE
Unit Count	1 Count

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