What is the best battery for this lamp?

I'm using the ultra fire 18650 with no problems, I don't think there really is a best battery to be honest.

Extra ir drop in light where do you get one

Search Amazon,most products are from Homesafety Electronic co. UniqueFire also has a web site.

Can you send me a link for white led?

https://www.amazon.com/gp/product/B011I9R3JM/ref=ask_ql_qh_dp_hza?th=1

How long does the battery last

I've gone 3 full nights of hunting. Light still going strong.

Deliver to Japan

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UniqueFire Vcsel 940nm IR LED懐中電灯ナイトビジョン用 44mm フレネルレンズ赤外線ライトイルミネーターズーム可能小型プレデターライトラピッドフォーカス調光スイッチ LEDインジケーター付き最大照明 1000M

UniqueFire Vcsel 940nm IR LED懐中電灯ナイトビジョン用 44mm フレネルレンズ赤外線ライトイルミネーターズーム可能小型プレデターライトラピッドフォーカス調光スイッチ LEDインジケーター付き最大照明 1000M

Product ID: 760986658

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Details

Special Feature
充電可能
Color
赤外線懐中電灯。
Power Source
バッテリー式
Light Source Type
LED
Material
アルミニウム

🎯Adjustable rapid-focus zoom lens

🔦1000M max illumination range

⚙️5%-95% dimmable brightness control

Description

🌑 Own the night with precision IR power!

UNMATCHED 1000 M IR REACH - Illuminate the night like never before with a powerful 940nm IR beam that cuts through darkness up to 1000 meters.
CUSTOM BRIGHTNESS CONTROL - Fine-tune your illumination from 5% to 95% brightness with an intuitive dimming switch—no more guesswork.
MILITARY GRADE DURABILITY - Crafted from aerospace aluminum alloy with O-ring sealing, this light is built to withstand rain, dust, and rough conditions.
PRECISION RAPID FOCUS ZOOM - Easily dial in your perfect beam with a smooth rotating Fresnel lens for spot or flood IR lighting.
LONG LASTING VCSEL LED TECH - Experience up to 50,000 hours of reliable, low-heat infrared illumination powered by cutting-edge Vcsel 940nm LED chips.

The UniqueFire Vcsel 940nm IR LED flashlight features a zoomable 44mm Fresnel lens and advanced Vcsel LED technology, delivering infrared illumination up to 1000 meters. With rapid-focus and adjustable dimming controls, it offers precise beam customization. Built from aerospace-grade aluminum with water and dust resistance, this compact predator light is engineered for durability and long-lasting performance.