Besides, you can get a $5 cash coupon. You can use the coupon next time when your order is over $10.
If you’re interested, free feel to pm me or email me at activity@airsoftpeak.com. If you don’t like the three flashlights I list above, tell me the one you want. I’ll help you.
If you don’t like this promo, feel free to share you idea.
For the gun lights, I’m sorry to tell you that you just missed our anniversary sale: 15% off sitewide. But 8% newmember or 10% birthday discount may help.
For the credit card knife, we can send it to you as a gift if your order is over $20 or 40% off on promo day.
http://www.banggood.com/Ultrafire-CREE-XML-U2-OP-WF-501B-1200LM-5modes-LED-Flashlight-p-912658.html XML U2, same five modes.
Also: U2 is the bin (=index number for lumen output ratings at certain currents), the emitter (LED) itself is an XML. This is important since some LEDs share bins.
18650 Li-Ion cells run at 3.6 V, they hold 4.2 V directly after charging but that drops to 3.6 very fast when in use. It’s the ‘working voltage’ of most Li-Ion cells, similar to how NiMHs is 1.2 V (~1.4 after charging) or alcaline cells 1.5 V
I see. That is most likely the max. voltage at which this module can operate. Drivers have a range of voltages they can work with, like 3.0 to 4.2 for lithium cells. If that voltage is exceeded the components on the driver may take damage, if it’s too low the flashlight may not turn on at all due to low charge protection for Li-Ion. The LED itself wouldn’t benefit from a higher voltage either as it has a typical forward voltage of 2.9 to 3.35 (max 3.5 at 700 mA), i.e. the driver down-regulates its output voltage to that level anyways.
XTAR D06 CREE XM-L2 900 Lumens 2.75V-4.2V 18650/18700 Diving Flashlight Set Black
http://www.airsoftpeak.com/-p-14790.html
$13.99 OFF
coupon code:14790
Number Available:5
Expire:12/01/2014 (mm/dd/yy)
Free Shipping Worldwide!
*Water resistant to a depth of up to 100 meters
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to use the coupon code.
