DX  » Community » Reviews » UltraFire WF-501B Cree R2-WC 250-Lumen LED Flashlight Black (1*18650/2*CR123A)
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  • Overall Rating: 5
  • Price: 5
  • Quality: 4
  • Ease Of Use: 5
  • Usefulness: 5
Ultrafire R2 SUPERLEDLIGHT – UltraFire WF-501B Cree R2-WC 250-Lumen LED Flashlight Black (1*18650/2*CR123A) Reviews

posted by lasermanathome on 03/24/2009 Certified Owner

Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

Pros:
Very bright compared to all other
flashlights, equipped with only one ledemitter, when used with 2 x16340
3.0 or 3.7V much brighter than with one 18650
Suitable for most situations, it can't be compared with xenonbulb Ultrafire-flashlights, the 6000K sunlightcolor
makes situations better judgable than
with the more yellowlike light of glowing bulbs and their shorter autonomy
with comparable lightoutput.
Cons:
The focus has to be tuned by turning the reflector about 1/4 turn back and sealed with a drop of cyanoacrylate. The quantity of light this flashlight produces is often more than you will need, a PWM moderator, wich comes with longer using time should be advised.
But for this price...
For a few dollars you can buy a pcb by DX wich provides this function.
Other:
Maybe you should consider delivering this flashlight with multipowermodes
and a connector /clampto recharge this flashlight with the batteries inside.
The police and other forces would be very interested in such a set, much more easy than the heavy magcharge they are using now.
Bottomline:
Best Buy, can easily be moddered to outstanding performance.
Should be in every home /ship etc.for
emergency-situations.
The shelflife of CR123 batteries is 10++
years

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