Can i use this with a aaa lithium battery or does it really need to be alkaline?

Use rechargeable AAA batteries. These small bright flashlights eat batteries. Each battery only lasts 40-45 minutes; tops. Alkaline AAA start out brighter because they are at ~1.60 volts DC. Rechargeable AAA batteries start out at ~ 1.42 to 1.45 volts DC depending on your charger. Difference in runtime is noticeable, but negligible. These lights are not meant as a main light for more than 30 minutes. They are primarily for intermittent use. The cheaper ThruNite Ti2 will NOT work with rechargeable AAA batteries.

Header description says i4e, detailed description says i3e. why the difference?

Hi dear customer, the correct name is "I3E", not "I4E". We're so sorry for this. This is the display problem with Amazon system. We have already responded to Amazon. Thanks!

Does anyone know the runtime with a non rechargeable lithium battery?

I’ve had mine for almost 3 years the standby is amazing, I’ve only changed the battery once, it lights up every time without fail. I’d say continued use maybe like 30 minutes

Se puede usar TR 10440?

Sorry, it can not use. The voltage is beyond 2v, we do not recommend use. Thank you!

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Description

🔦 Light up your nights, wherever life takes you.

COMPACT POWERHOUSE - Twist-to-activate design delivers a bright 90 lumens with just one AAA battery—ultimate EDC convenience.
EFFORTLESS OPERATION - Ergonomic twist head with precision machining for a secure grip and quick, intuitive use.
LONG LASTING LUMINOSITY - Up to 60,000 hours of LED lifespan ensures your keychain light won’t quit before you do.
VERSATILE NIGHT COMPANION - Perfect for camping, hiking, dog walking, or late-night errands—your go-to compact light for every occasion.
BUILT TO BRAVE THE ELEMENTS - IPX8 waterproof rating means this flashlight thrives in rain, splashes, and unexpected outdoor adventures.

The OLIGHT i3E EOS is a sleek, durable keychain flashlight delivering 90 lumens of bright LED light powered by a single AAA battery. With an IPX8 waterproof rating and a 44-meter beam distance, it’s engineered for reliable performance in all your outdoor and everyday adventures. Compact and easy to operate with a twist mechanism, it’s backed by a lifetime warranty for stress-free use.

Specifications

Special Feature	Durable
Color	Black
Power Source	Battery Powered
Light Source Type	LED
Material	Aluminum
White Brightness	90 Lumens
Included Components	I3E
Product Dimensions	4.5"D x 2.75"W x 0.75"H
Voltage	1.5 Volts
Battery Cell Composition	Alkaline
Item Weight	19.4 Grams
Number of Batteries	1 AAA batteries required. (included)
Water Resistance Level	Waterproof
Warranty Type	Lifetime
Brand	OLIGHT
Brightness	90 Lumen
Battery Description	Alkaline
Finish Type	Black
Manufacturer	OLIGHT
Size	Mini
Part Number	AM-I3E-Black
Item Weight	0.684 ounces
Item model number	AM-I3E-Black
Batteries	1 AAA batteries required. (included)
Is Discontinued By Manufacturer	No
Finish	Black
Item Package Quantity	1
Special Features	Durable
Batteries Included?	Yes
Batteries Required?	Yes
Description Pile	Alkaline
Warranty Description	Lifetime warranty (product purchased after january 1st, 2023).

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