so i found some interesting today
first:
when you press the spring hard(not too hard, normal press to be exact). the current will be about 3,5A, then you slowly reduce your force to spring, the current will slowly goes up to 5.8-6A
but when you press the spring hard again(like how you press at first, and not turn off the light). the current will stay remain, 5.8-6A, strange.
then you switch to low then high again, now the current will be about 3.7A
so
btw, my manker u21, i’m not sure if it is an early version, because i bought it about just 2-3 months ago
from hkequipment
ps:anyone know where to buy its lens, i accidentally touch the len with my glued finger, now it’s very annoy to look at its len
It has to be early because the newer ones won’t go beyond 2.8A at the tail cap.
Is the lens coated? If not then you can use any cleaner. I’m guessing it is coated and you don’t want to damage the coating. What type of glue did you use?
You might try some cleaners only on the outer edge that is not seen. If it doesn’t damage the coating, then use it on the glue. Worst case is you make the glass pure with no coating. It’s not too big a deal.
Edit: yes, review says it’s coated. What if you flip the lens so the glue part is outside and then just clean it with a chemical taking the coating off? As long as the coating is on the inside, then all is good. You won’t loose than extra 1% of output.
it’s coated, and yeah, try many types of cleaner, none of them work
and i has no idea what glue is it, at first i thought the len was dirty, so i kept using it for a short time then notice it’s glue,
it’s diameter is 55mm, so i am finding 55mm AR coated lens now
Is it a chip? A razor blade will get it for sure. That’s how window tint is often removed. A sharp blade will not scratch the surface if you go across at a shallow angle.
You can use your finger nail to see if its really not on the other side of the lens what you’re seeing. Just becareful not to scratch your lens with your nail.
I got my UT02 today. I really like it, especially with that coupon price. My button doesn't light up at all though, is that normal? Was reading the OP and it mentioned light is purple when off, but not mine.
I have several and the button only lights briefly or while charging. Somewhere along the line the button was changed it’s squishy now, not sure when production changed. The older ones seem brighter than the new ones as well. Again, not sure why. I use the cyan Liiitokala 30a cell and it performs very well for the coupon price. I feel like this can be driven quite a bit harder. On high, it doesn’t even seem to warm up. Regardless it’s a bargain and has nice features for <$30.