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

Nitecore 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

⚡0.8A max charging current

🔋Supports 20+ Li-ion battery types

🔌USB & solar panel compatible

¥4033

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Charge smarter, live powered — never miss a beat!

POWER PACKED CHARGING ⚡ - Delivers a robust 800mA current for rapid, efficient battery revival.
SMART SAFE TECH 🛡️ - Intelligent charging modes with built-in safeguards against overcharging, overheating, and reverse polarity.
ANYWHERE ANYTIME POWER 🔌 - Compatible with USB power banks, adapters, and solar panels for ultimate on-the-go convenience.
POCKET SIZED POWERHOUSE 👜 - Ultra-lightweight (1.43oz) and compact design fits perfectly in your hand or bag for daily carry.
UNIVERSAL BATTERY WHISPERER 🔋 - Seamlessly charges a wide range of Li-ion batteries from 10340 to 21700 and beyond.

The NITECORE UI1 is a sleek, single-slot intelligent USB charger designed for a broad spectrum of lithium-ion batteries, delivering up to 800mA charging current. Its smart charging technology optimizes battery health with multiple safety protections, while its compact, lightweight form factor and USB compatibility—including solar panels—make it the ultimate portable power solution for professionals on the move.

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	4.6 out of 5 stars 466 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 Items	1
Number of Packs	1
Number of Ports	1
Output Voltage	4.2 volts_of_direct_current
Product Dimensions	1.15"D x 4.82"W x 1.26"H
Specification Met	UL, CE
Unit Count	1 Count

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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¥4033

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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