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    Solar + Lux

    Some other stuffs may influence your max reading: - airborne pollution, includes humidity. I presume the highest reading would be in dry desert air with no wind kicking up dust. - your geographical location vs sun position to earth. European locations are already 50degree latitude or so...
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    Can you mix protected and unprotected batteries?

    Flashlight tubes are made from cutting longer tubes. At the edge of the cut, you've got burrs and sharp edges that can scrap batteries over and over. I'd recommend using 400grit then 600grit or finer sand paper to smooth out the rims of the tube. Polish the edge, in effect. Round them such...
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    Can you mix protected and unprotected batteries?

    With respect to driver boards that I've seen, even the ones from Kai, any short-producing failure would quickly be vaporized, with very little energy directed to the local spots of failure on the semiconductor chip, producing open circuit. I spent 16 yrs in semiconductor industry. Early in my...
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    Can you mix protected and unprotected batteries?

    Yes, things can happen in nature. But if you'd look at statistics, out of millions and millions Li cells produced, how many actually failed ? The probability of thermal runaways is quite small, less than - winning lottery (+50million to 1) - getting shark bites swimming in Florida - accidents...
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    Can you mix protected and unprotected batteries?

    Did you read the entire thread that you forwarded ? Please do. As you can read from subsequent posts in that thread, there was a lot SPECULATION about what happens. Speculation over an event occurs because there was not enough information, simply not enough info, about what happened. Many...
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    Replace LED Driver for 7XCREE XML T6 Keygos

    Update. I replaced the OEM 7xT6 with this formerly broken but now fixed: http://kaidomain.com/product/details.S020419 Light is much brighter than before, brighter than the stock 9xT6, but got hot quickly. Batteries can handle it, even the 18650. Whiter light than before. Yes $20. Fwiw. If...
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    Can you mix protected and unprotected batteries?

    Thanks, but I am looking technical justification and/or engineering reason that differentiates it from simple (and perhaps extreme) paranoia. ex. What's in a battery protection circuit that won't work if you'd place three batteries in series with one unprotected ? Take a 7xT6 or a 9xT6...
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    Can you mix protected and unprotected batteries?

    Can you mix protected and unprotected batteries in the same flashlight ??? Same capacity 26650. Can you mix batteries of different capacities, but same design ? Like 3000mAh and 4000mAh both of 18650. Drawer availability gives rise to the question.
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    Replace LED Driver for 7XCREE XML T6 Keygos

    I got one 7xT6 driver board in from Kaidomain. It was broken on shipment though. $20. I also got a 9xT6 board for my Trustfire 9x. Did replaced it. Found that the 3 5000mAh 26650 batteries have insufficient power to drive it. A 12v 2.5A ps ran it for about 15sec before ps protection...
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    UltraFire 9T6 (with 9 x XM-L) Review (2-3x 18650 or 26650)

    I've a 9xT6 branded Trust-fire. From your close up pictures, design fins and tube are identical, making me think Trust-fire and Ultra-fire are cousin companies or at least ate Thanksgiving dinners on the same table. LOL. Only the reflector is different. I run a small biz and close up at...
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    CAUTION !! Misleading budget battery and lumen claims

    How long do they last ? Do you have data for each brand and their longevity?
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    Trustfire 9xT6 and TR-006 both protected??

    Can anyone who had these to comment about whether the driver in this flashlight has low voltage cutoff, therefore protect the batteries? And on the charging side, it seems TR-006 cuts off at 4.12v charging a 26650. This can also protect the batteries?
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