In simple laymans terms SSC P7 binning?

[gav6280]

Could someone please explain to me as simply as possible what the various available bins are for the SSC P7 and what difference it makes?

Thanks.

 

[kz1000s1]

The basics of the P7 binning are;

Example: DSWOI

The D is for the luminous flux, the output in lumens.
"D" is the highest output rating currently available. This means the
LED tested at between 800 and 900 lumens. There is an "E" listed
on the spec chart, but so far they don't exist. "C" is 700 to 800.
My own light has a C in it and I don't see much difference, though the
difference between C and D could be anywhere from a few
lumens (798 vs. 803) to almost 200 (703 vs. 898). Usually when
someone on CPF refers to a "high bin" LED, this is the rating they
are talking about. "C" is the lowest bin I would ever use in a light.

The SWO is the rating for color temperature and tint. The specifics
are more complicated. Talking about a warm, neutral or cool LED
is refering to this.

The "I" is the rating for forward voltage. I and J are the ones
normally used for flashlights. This is basically how efficient the
LED is. An "I" likes a voltage range from 3.25 to 3.50 V, but we
are typically overdriving them for higher output. This is the voltage it
requires to achieve the rated output. A "J" needs 3.50 to 3.75V which is
less efficient though more tolerant of being overdriven at a high current.

I hope this sheds some light on the subject.

 

[gav6280]

Brilliant cheers dave.

Is there any type of single cell that it's ok to direct drive a p7 with?

I'm brewing an idea for a very simple light, needs to be absolutely as minimal points of failure as possible.

If possible no switches, no resistors, no drivers. Just the light an optic and some wire plus a battery.

 

[csshih]

I'd say an 18650 direct driven would work fine.

 

[olrac]

Another good candidate:

IMR26500 Specifications :

Nominal Voltage : 3.7V
Capacity : 2300mAH
Lowest Discharge Voltage : 2.50V
Standard Charge : CC/CV ( max. charging rate 5A )
Cycle Life : > 500 cycles
Max. continuous discharge rate : 20A
Operating Discharge Temperature : -10 - 60 Degree Celsius
Size : 26.20mm ( diameter ) x 50.40mm ( height ) +/- .05mm

 

[ipfreeze]

The basics of the P7 binning are;

Example: DSWOI

The D is for the luminous flux, the output in lumens.
"D" is the highest output rating currently available. This means the
LED tested at between 800 and 900 lumens. There is an "E" listed
on the spec chart, but so far they don't exist. "C" is 700 to 800.
My own light has a C in it and I don't see much difference, though the
difference between C and D could be anywhere from a few
lumens (798 vs. 803) to almost 200 (703 vs. 898). Usually when
someone on CPF refers to a "high bin" LED, this is the rating they
are talking about. "C" is the lowest bin I would ever use in a light.

The SWO is the rating for color temperature and tint. The specifics
are more complicated. Talking about a warm, neutral or cool LED
is refering to this.

The "I" is the rating for forward voltage. I and J are the ones
normally used for flashlights. This is basically how efficient the
LED is. An "I" likes a voltage range from 3.25 to 3.50 V, but we
are typically overdriving them for higher output. This is the voltage it
requires to achieve the rated output. A "J" needs 3.50 to 3.75V which is
less efficient though more tolerant of being overdriven at a high current.

I hope this sheds some light on the subject.

This is awesome info!
Thanks! I was wondering about this for a long time.

What would the run times be for the 18650 and the IMR26500?

 

[gav6280]

So where is the best place / Cheapest place to by D bin P7's already on stars?

And will hooking it directly to a single 18650 provide full lumen output?

Im guessing run time would be some where around 45 minutes for a 2500mah?