I had the lamp felt times with current and power meter times on the tooth, here the shocking results.
- FALSE: brightness information "3800-4000 lumens" Pure fantasy figures.
a) technically impossible since the CREE LEDs give not so much. Maximum 2850 lumens according to data from the CREE T6 LED possible what ...
b) is impossible in practice again. With 36 watt lamp could be used to fry eggs. In stage 2, the lamp is just so hot that you can use them in continuous operation, they are also less than 600 lumens from
Here, the back-calculated from the power consumption values for CREE-sheet, even without the loss of the constant current source (so optimistic!), As the lamp still went.
Under load decreases due to warming the power quickly, the measured values achievable time here after about 5 minutes, the values are then worse !:
* Lowest level = 1 * LED medium level = 2 * LED highest level = 3 LED
- FALSE: "100% waterproof": In the battery, the water runs clear directly. The cable feed into the lamp housing is not sealed.
- FALSE: "Battery 6400 mAh": The batteries are not even B-Ware, were measured from me net removed only around 2200 mAh. The batteries are so bad that it seems likely that they could from cannibalized laptop batteries originate. This performance is obtained by the way very easy with only two LiIon 18650 Quality batteries! If the battery fails his service, to be soldered to the electronics including protection for little money together. (About 2x4 Eur for batteries, 3 Eur Schutzelektronig). Instead 1:50 hours keeping the then 3.5 hours.
In addition:
- Wobbles bolted mounting base, loosens by itself.
- No command, cable is simply inserted, tighten once fixed, you have the cable in your hand. Anyone who wants to avoid this, I recommend a mini cable tie on the cable to mount in the mounting base and to give the same to improve the water tightness a little silicone or hot glue into the hole.
- Suitable as front / helmet lamp, the lamp head can be difficult because there is Easier!
To take a look into the inner workings of what I had done time after death led of course, is very simple, simply screw, front and rear.
On the electronic board two resistors were scorched. It probably helped that the cooling of the LEDs on the pure pressure LED Mounting cylinder is towards the housing, which is home to the electronics. The cylinder hangs in the air. Anyone who wants to increase the lamp life here, which could bring in the air gap thermal grease.
All in all a real shame. LED technology has now taken such great conditions. It would be so easy to make a solid, low-cost, small, lightweight, persistent and bright lamp without having to lie on the brightness information and all the rest so. Even 300/600/1000 lumens are impressive light that you can honestly declare without having to be ashamed of but simple.
Even the low price does not justify the obvious misstatement, and the promise of quality are just next to it: A clear case, but there's just one star.
