Most flashlights have PWM. The question is, as JasonWW said, bad PWM or good PWM. The PWM frequency in SP33 v3 is approximately 16 KHz (16000Hz). This is a good PWM.
I thought that was the thread, I just didnt look back far enough, thanks. How do you know the PWM frequency is 16,000 hertz? Did you use an oscilloscope?
Seller made a new proposal
Proposal:
Refund US $ 0.00
Comments:
sorry,friend,due to the virus,many airlines closed,so the logistics update will be slower than usual,please understand.hope you can cancel the dispute.
AE settled in my favor.
AliExpress’ Judgment
Purchase Protection is running out, but package is still in transit Valid
Feel really bad about this because I’d placed five orders before with the Sofirn Official Store on AE for seven flashlights and never had a problem either with shipping or manufacture, was extremely satisfied with them all.
Weird thing, ordered a bunch of magnetic charging cables on eBay the other day and they shipped out almost immediately from the same place as the Sofirns originated, Guangzhou International Center — Tracking even listed the flight they’d be on.
I’m in (another) dispute with them right now through Paypal. An order from their website that made it to the shipping center on March 20th and hasn’t moved. They give the same response about shipping times.
I keep getting sucked back in trying to order from them because they make great lights at a great price. But almost every order has been problematic. Some have eventually made it to me, but half have never arrived (and that’s not an exaggeration). When will I learn?
My experience with them is you get a phony tracking number. It never shows your package leaving China . Sometimes you eventually get the order and sometimes you don’t .
But for some reason I keep making purchases .
1. The blue pilot light worked fine at first, going off after 5 secs but then stayed on. So I removed battery to reset firmware & all is back to normal. Anyone come across this ?
&
2. When charging the pilot light flashed red as it should but then after a hour or so it switched to blue for 1 sec & then back to flashing red. This was repeated. Could this be a fault with the charging circuit, the battery or just that the charging is very close to finishing. Battery is a new 26650 from Sofirm. I removed the battery & finished charging on a external charger. Measured 4.20 afterwards but forgot to measure after removing from SP33.
Suspect the problem is with the battery. I’ve got two SP33 V3 flashlights and no matter how long or short a period operated, both of the Sofirn 26650 5500mAh cells with which they came read 3.8V on my XTAR VC4S chargers upon insertion. Their measured voltages then swing up and down repeatedly until finally reading 4.2V dOne.
No such charging irregularities after draining down my 26650 5500mAh Vapcells in either the SP33 or Astrolux MF01 minis. Have also recharged the flashlights directly from their USB C ports but never kept an eye on the power indicator whilst charging.
@andychrist Thanks for your comments. I have 2x Sofirm 26650, one 5500mAh (came with the SP33) & one 5000mAh ( the suspect one) Will keep a watch on this one. I guess I will look for a better quality 26650. Probably only need one as the SP33 is my only 26650 flashlight.
Placed an order for the V3 only to find out it was using FET drivers. Am buying based on Zeroair review on the V2 which has regulated output , the high(approx 1200lumens) maintain flat regulation for 2hrs which is impressive. The place I bought only hv v3 in stock. :(. Anyone actually do a runtime test on High? How long do they last?
I just want to mention that on the V3 the High output may start at 1500 lm (I’m not sure the actual number), but it will slowly go down as battery voltage drops. That is a trade off of the FET design and it’s brighter Turbo.