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

🔦 Small Light, Big Impact — Illuminate Your Every Adventure

BUILT TO ENDURE - Crafted from premium aluminum with a lifetime warranty, this flashlight is your reliable companion rain or shine.
ALL WEATHER READY - IPX8 waterproof rating means it thrives in the toughest outdoor conditions—camping, hiking, or late-night dog walks.
COMPACT POWERHOUSE - Twist-to-activate design delivers a focused 90-lumen beam from a single AAA battery—lightweight brilliance on demand.
READY OUT OF THE BOX - Includes a pre-installed GreenMax AAA battery with a protective wrapper—just remove and twist to light up your night instantly.
ULTIMATE PORTABILITY - Weighing just 19.4 grams and sized to fit seamlessly on your keychain, it’s the EDC essential you’ll never want to leave behind.

The OLIGHT i3E EOS is a compact, durable keychain flashlight delivering 90 lumens of focused LED brightness powered by a single AAA battery. Featuring an IPX8 waterproof rating and premium aluminum construction, it offers up to 60,000 hours of reliable runtime. Designed for everyday carry and outdoor enthusiasts alike, it combines portability with rugged performance, backed by a lifetime warranty.

Specifications

ASIN	B017R560WC
Additional Features	Durable
Batteries are Included	Yes
Battery Description	Alkaline
Battery Type	Alkaline
Best Sellers Rank	#9,779 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #141 in Handheld Flashlights
Brand Name	OLIGHT
Color	Black
Customer Reviews	4.8 out of 5 stars 5,392 Reviews
Finish Types	Black
Included Components	I3E
Item Dimensions D x W x H	4.5"D x 2.75"W x 0.75"H
Item Weight	19.4 Grams
Light Path Distance	44 Meters
Light Source Special Features	Focused Beam
Light Source Type	LED
Manufacturer	OLIGHT
Manufacturer Warranty Description	Lifetime warranty (product purchased after january 1st, 2023).
Material	Aluminum
Material Type	Aluminum
Model Number	AM-I3E-Black
Mounting Type	Handheld with Keychain
Number of Batteries	1 AAA batteries required. (included)
Number of Light Sources	1
Power Source	Battery Powered
Recommended Uses For Product	Camping, hunting, hiking, backpacking, running, dog walking, night fishing, everyday use as a keychain flashlight
Runtime	1 hour
Shape	Round
Special Feature	Durable
Style Name	keychain
Unit Count	1 Count
Warranty Type	Lifetime
Water Resistance Level	Waterproof
White Brightness	90 Lumens

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