For those who might be interested in the latest batch of Magicshine clones from Amazon,
Amazon.com: 4 Mode 1200 Lumen CREE XML T6 Bulb LED Bicycle bike HeadLight Lamp Flashlight Light Headlamp: Sports & Outdoors
I received two yesterday. Supposedly from different sellers, but they were absolutely identical in all respects (I'm even sure the same packer's fingerprints are on the padding materials). Only difference was different barcode numbers on labels stuck to the outside of the boxes. So it doesn't do any good to carefully select your "seller" as I did, buying from the two with 99% customer satisfaction ratings, if they are "fulfilled by Amazon", they're all the same.
Fit and finish on these lights appears quite good. Wiring connectors make a good tight fit with the original Magicshine connectors. Out of the box I fully charged both of them, using the supplied charger that came with each. One took 47 minutes to the green light, the other took 1 hour 52 minutes to green light. I realize this info is useless, I was just curious.
I mounted these two lights with their respective batteries on a broomstick in front of a fan to test them out. I also mounted my original Magicshine together with the Geoman replacement battery (now a couple of years old, though mostly unused). I turned all three on at their highest setting and timed them to the red indicator on the back of each light.
Brand new clone 1: 1 hour 17 minutes run time
Brand new clone 2: 1 hour 51 minutes run time
2 year old Magicshine: exactly 2 hours
As an aside, I noted that the Magicshine lamp got much hotter than the clones. The clone chargers got much hotter than the Magicshine. The Magicshine battery was much heavier-- 280g vs 198g for the clone battery.
I'm going to run a few more time tests in the near future, including a strobing headlight together with a strobing Magicshine taillight on a Y-cable. Also two strobing headlights on a Y-cable (red lens on one for taillight).
One of the things I'm wondering about is whether the clone batteries are worth bothering with--ie should I keep the lamps and dump the batteries and buy a more reliable battery (perhaps the real improved Magicshine or similar)? Or if I get a good clone battery, can it be as serviceable as a Magicshine battery? Or are all the clone batteries dogs which will fail after a very short service life?