I've got opurtunity to inspect very promising dual led bicycle light from Kaidomain.com.
http://www.kaidomain.com/product/Details.S023788
From the outer look it is the one of few latest clones of Yinding (Gemini Duo clone), so it is essentionaly clone of the clone.
Here are the pictures:
Taking it apart was quite easy
The driver:
Internals - PCB:
Lenses:
Lenses can be simply replaced:
Opearating:
The light has three modes chosen from 10 brightness levels. It can be any combination you want. You can make it Low, Mid , Hi or Hi, Mid , Low or Low, Hi, Mid if you want. For this test I've choosen levels 1, 4 and 10. Strobe is hidden and can be reached with long press from off mode.Light is turned off by long press in any mode.
The light is powered by tipical 2S2P 8.4V battery pack.
Power usage
Connected to the battery pack:
Level1:
Level4:
Level10:
Beam on high:
Beam of 2nd generation Yinding to compare to:
Final verdict
Pro:
- best user interface you can find in the budget bicycle lights
- 10 levels of brigtnes to choose from
- small and very light
- nice evenly spreaded beam
- overheating protection
- XM-L2 U2 leds (despite title says it's XM-L)
- 14.5W (2200mAh) to the leds
- possibilities to exchange TIR lenses for wider angle
Con:
- not the best heat transfer to the housing (Yinding has it much better)
- no thermal paste (as usuall, but can be easily added)
- can overheat at higher levels but it's ok when moving fast
- cool white leds (neutral white would be much better)
- not waterproof but can probably stand light rain
Overall very nice bicycle light for helmet use, specialy for MTB purposes. There are quite some improvement I would like to see, though.