Assertion: flashlight | /r/CapableOf | take single 18650 battery
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text: Some flashlights that use two CR123A batteries can take a single 18650 battery (though the 18650 battery is wider than CR123A cells and 18650's will not fit in some SureFire and Quark lights; 17650 or even 16650 batteries are available) which offers substantially more capacity than the two smaller cells together.