Can you lose the end cap? Will the key ring end unscrew completely from the body? (My problem with keyring flashlights that unscrew to turn off)

No. You unscrew till it slides open just enough to reveal charging port. When not charging the two will be screwed together by several threads, which are dust sealed by an o-ring. The o-ring also keeps it from coming unthreaded. I carry mine in my front pocket and have never had it come apart or accidentally get turned on.

So at max output it only last 5 min?

After 8 months of owning this light- I finally used it. It last about 10 min on high then lasted another 5- 10 min on low. Pretty good I think after having it charged 8 months ago. I will buy more for my family’s keychains.

Does this flat head micro usb cable fit into a normal usb wall charger adapter? I've never seen a usb charger with a flat charger end?

I've been using a previous version of this light , 130 lumens for more than a year. It is my EDC that I have on my keychain. I use the provided USB cable to charge from my office computer. Perhaps the photo is deceiving, as the USB head is the same as every other USB cable I have seen, and the small end fits into the light. I would not expect any different result when using a USB charger adapter. When Olight put these 150 lumen lights on sale, I bought a dozen to give to family and friends. For the size, they are a must. Put it on your keychain. Hook it on your dog's collar during night time walks. It is bright enough to be a handy aid, always at your fingertips.

Is the battery replaceable? If so what battery? Could you use a regular battery in an emergency?

Sorry, it can not replace the battery. The battery is 70mAh 3.7V Li-ion Battery (built-in). Thank you!

I1r2 Eos Black | Desertcart South Korea

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Description

🔦 Light up your life, not your pocket!

RUGGED RELIABLE - Crafted from aluminum alloy with IPX8 waterproof rating—built to brave any adventure.
KEYCHAIN ESSENTIAL - Comes with a sturdy key ring and a 12-month warranty—your trusty light companion.
DUAL MODE BRILLIANCE - Twist to toggle between a subtle 5-lumen glow or a blazing 150-lumen beam.
RAPID RECHARGE READY - Fully juiced in 75 minutes via Micro-USB—no disassembly needed, no downtime.
POCKET SIZED POWERHOUSE - Slim as your pinky, weighing just 13g for effortless everyday carry.

The OLIGHT i1R 2 EOS is a sleek, ultra-compact rechargeable keychain flashlight delivering up to 150 lumens with a durable aluminum body and IPX8 waterproof rating. Featuring fast 75-minute Micro-USB charging and dual brightness modes, it’s engineered for professionals on the go who demand reliable, powerful illumination in the palm of their hand.

Specifications

ASIN	B0814MDZKP
Additional Features	Adjustable Light Modes, High Power, Lightweight, Portable, Rechargeable
Batteries are Included	Yes
Battery Description	Li-ion
Battery Type	Lithium Ion
Best Sellers Rank	#121,082 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,708 in Handheld Flashlights
Brand Name	OLIGHT
Color	Black
Customer Reviews	4.8 4.8 out of 5 stars (3,266)
Finish Types	Black
Included Components	Flashlight i1R 2 EOS (with Key Ring) x 1, Micro USB x 1, User Manual × 1
Item Dimensions D x W x H	44D x 15W x 15H millimeters
Item Dimensions L x W x H	37L x 18W x 113H millimeters
Item Type Name	Flashlights
Item Weight	13 g
Light Output Maximum	150 Lumens
Light Path Distance	40 Meters
Light Source Type	LED
Manufacturer	OLIGHT
Manufacturer Part Number	AM-OL-I1R 2+USB
Material Type	Aluminum
Model Number	AM-OL-I1R 2+USB
Mounting Type	Handheld (with Key Ring)
Number of Batteries	1 Lithium Ion batteries required. (included)
Number of Light Sources	1
Power Source	Battery Powered
Recommended Uses For Product	Camping, Hiking, Dog Walking, Everyday Carry
Runtime	6 hours
Shape	Compact
Specification Met	IPX8
Style Name	Modern
Unit Count	1 Count
Water Resistance Level	Waterproof
White Brightness	150 Lumens

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