Now CREE XM-L T6 Bulb is one of the most populat used for super power flashlight ,it can be max.1000lumens when the current is 3A.
XLamp® XM-L LED
Shatters Single-Die Performance Standards
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The XLamp XM-L is the industry's brightest, highest performance lighting-class LED. With breakthrough light output and efficacy, XM-L is designed for very high-lumen applications such as high-bay or roadway lighting.
XLamp XM-L LEDs offer the unique combination of very high efficacy at very high drive currents, providing a 20% efficiency gain over the XLamp XP-G LED at the same current. With this available efficacy, XM-L can lower total system cost by reducing the number of LEDs and optics in the system.