600 lumens led flashlight shockproof waterproof and rechargeable Victoper Flashlights, High Powered High Super Bright Tactical Flashlight, Rechargeable, 5 Modes Zoomable Flash Lights for Emergency, Outdoor, Home, Camping, Hiking Aura Rechargeable JobSmart 600 Lm Rechargeable Flashlight,

(Limited space inside a helmet) Most other costumers use 4x AA batteries (6v) my question is can I expect similar battery life using a 5v 2600 mAh battery pack instead

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Using a helmet with only a Snell M or DOT rating will get you black-flagged at any sanctioned car racing event

As the best budget pick on this list

I personally havent used this