First can anyone say what the lamp life is roughly? Need to get some idea as changing the bulb is not an easy swap.
Can this run off protected 18650s? Too much of a hassle to get unprotected by the looks.
Some have reported it steps down from high in 6mins, what I want to know is if you have the light fully warmed up in just low mode only, can it give any meaningful runtime when kicked up to high?
If not that would seem pretty impractical for search n rescue.
Ta
Hi, problem 1. HID bulb without filament depends on high-voltage breakdown gas inside the bulb to emit light. There is no filament in the tube, so there is no filament fusing, and the service life is longer. From FF1 produced in 2009 to FF5 now, no one has ever worn out the bulb. 2. FF5 battery should use 18650 power battery and flat head battery without protection. Samsung 30q or Sony C6 3 are recommended. FF5 has two gears of high brightness 100W and low brightness 40W. The highlight time depends on the ambient temperature. When the internal temperature of the flashlight reaches the temperature control value, it will automatically switch from high brightness to low brightness. Generally, the highlight time is about 5 minutes. Thank you. I’m the manufacturer of the Firefox flashlight. If you have any questions, please feel free to consult. thank you!
If acquiring them via shipping is a hassle in your country have you considered venturing to a local vape shop ? most vapes run off unprotected cells and is a good go to for batteries in a pinch.
Only downside is 30q give roughly half hour run time but the light will give you and everyone around a grin.
Hello, FF5 has high power and high brightness. The 30q has a comprehensive endurance of about 45 minutes, energy conservation, and the capacity of four batteries is more than 40 wh
Hmmm it seems they are quite common…my bad.
Thanks stone20003
Would be handy to have a 8cell holder i would think? More runtime without getting out some more cells out in the field.
Please correct me if I am wrong here!
FF5 in high is 100W across 4x Li-ion cells in series, which are nominally 3.6V each if using LiCo cells, so that would make FF5 a 14.4V light, and the nominal current draw ~6.94A
distributed across 4 cells ~1.74A/cell. <— apparently incorrect
What I am unsure of is if cells in series distribute amps across cells the same as cells in parallel. Also, using cells with a nominal charge of 3.7V would seem to lower the current draw… but shouldn’t the current draw simply be what it is regardless of the nominal charge of the cells used?
But either way, 10A maximum continuous discharge IMR or INR cells should also be fine for this light, and then you’re not as worried about over discharge as you should be with unprotected high amp ICR cells, like I am with my 30A Sony VTC4 cells.
I really want to know if I am mistaken here, so I hope someone that knows says something.
Voltage is inversely proportional to current. Meaning doubling the voltage halves the current.
Did I apply amps to number of cells correctly? I know when cells are in parallel, the amps are distributed. What I asserted is about cells in series. Is it the same with cells in series, each cell gives equal portion of the total amps?
In series configuration each cell will see the same current load. The Ah rating is unchanged as well. The difference is in the voltage, it’s increased per each cell’s value. If you have 4 li-ions like your VTc4 in series, they can handle 30A, and the voltage is 16.8v fully charged. In 4P, the current handling is quadrupled as is capacity, but voltage doesn’t change. I am thinking the FireFoxes uses a 2S2P cell configuration.
Unclear. In a 4 cell in-series flashlight drawing x amps, will each cell see
x amps
or
x/4 amps?
It will be the same across each-each will see the same current. It’s not multiplied. If the flashlight draws 15A, each cell deals with 15A. Either way, multicell configuration is best for high currents.
Thank you. My assumption was that total amps were divided (not multiplied) among the cells in series, as with cells in parallel. I greyed out the incorrect assumption in my first post.
So… where is this bad boy 15A flashlight? :sunglasses:
There are several single cell lights that draw 15A or more on turbo out there.
Put it this way a 30Q 3.6v and 3ah
4s1p (4×3.6v)x3ah=43.2watt hours
1s4p 3.6vx(4x3ah)=43.2watt hours
You can see that the lower voltage has to supply more current than a higher voltage for the same work. In series there is 1 current path so 1 current. Parallel there is multiple current paths so they are added together.
Hey guys, this is the first I’m hearing about HID… so how are these different or better than an LED thrower?
Tempted to get the 4300K just for the novelty of what i assume would be a powerful soft yellow beam?
Thanks!
4300K is pretty neutral. If you want warm, you dip below 4000K.
Classifying color temperatures into warm, neutral and cool is somewhat subjective, but this bloggy thing does a decent job, quoting below:
That’s great info thanks! For years I’ve bought lights solely on raw power but now I’ve been thinking how nice it would be to have a light that’s bigger for inside the house, going for a walk… Noctigon KR4 in 2000K is incoming (:
That sounds incredible