I would say is copy/paste error and not the only one. I'm 100% shure there are lot more. Just take a look your headlights desctriptions. SKU:2420920009, SKU:2420920001 are just some to name.
Didn't have to wait so patiently.. First two of them arrived today!! Ordered July 9th, received July 17th, not bad at all! :)
Initial impressions: Plain white packaging, light are just like I thought (and said) them to be: parallel, 4.2V, 3 modes, PWM on low, smooth reflector. More info in the what you got today thread.
Longer protected cells (I tried the Panasonic 3400mAh from Fasttech, the only ones I have laying around not being used in a flashlight) don’t fit. This evening I’ll try to see if this can be fixed by removing some plastic from the battery case.
Next to that I’ll probably mod mine with a defuser of some kind, because I think the beam will be to focused for a headlamp.
- Soldering from the wires to the battery connections is subpar, looks like any of the soldering could break with very little force
- The star of the led is pushed against the metal by the reflector which is forced in place by screwing the bezel in place. No thermal paste is used.
- Batteries are placed in serial, the headlamp works with one cell
Long protected cells don’t fit. By removing a bit of the plastic on the positive side of the case I was able to fit the long protected Panasonic cells from Fasttech. Getting them out wasn’t even a problem.
My main concern is the 18650’s that are placed on the back of your head and just covered with a small piece of rubber. I wouldn’t recommend using cheap cells or cells of different age/capacity/brand. To my opinion it’s an added risk that can be avoided by using quality protected cells. For a headlamp in this price category it’s not feasible to buy quality cells for this lamp only, they’re just to expensive compared to the price of the headlamp itself.
Considering the price I’m happy, but don’t expect a high quality light.
[quote=CrashOne]
Batteries are placed in serial, the headlamp works with one cell
[/quote]
You mean parallel, which is good (safer).
[quote=CrashOne]
My main concern is the 18650's that are placed on the back of your head and just covered with a small piece of rubber. I wouldn't recommend using cheap cells or cells of different age/capacity/brand. To my opinion it's an added risk that can be avoided by using quality protected cells.
[/quote]
That's where serial vs. parallel comes into play: In parallel setup the potential problem appears when inserting cells (= when you can see/notice it), not during usage (= against back of your head). In theory you could use different cells in parallel setup, as long as the voltage is same when inserting those to light. I say "in theory", because I always advice against that kind of usage: Never mix different age/capacity/brand/voltage level cells in any multi-cell setup. (because that's easier for users - no need to know if the lamp is in series or parallel)
Of course, if you are in doubt (and the lamp is with parallel setup), you can use a single cell. :)
Also: Using good quality protected cells is always highly recommended, no matter how cheap the lamp is.