SCC P7 Question
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IcantC
Enlightened
- Joined
- Oct 12, 2007
- Messages
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IcantC
Enlightened
- Joined
- Oct 12, 2007
- Messages
- 920
TigerhawkT3
Flashlight Enthusiast
So, IcantC, do you believe it is or is not possible to DD a P7 off a 16340? First you say "no," then in your very next post you link to a mod driving a P7 off a 16340 (albeit with a Tri-Flupic). I think it'd be very possible to DD, but not with a protected cell. You'd have to use unprotected and be very careful with it (charging, discharging, etc.).
Oh, and it will be significantly brighter than a P4.
Oh, and it will be significantly brighter than a P4.
LumenHound
Flashlight Enthusiast
You can direct drive a SSC P7 safely with a RCR123 provided you use a low value resistor to limit the current flow to not more than 1.5 X the cell's actual maH capacity. If you RCR123 cell has an actual maH capacity of 670 then you should limit the current flow to the emitter to no more than 1 amp. Drawing more than 1.5 times the battery's capacity may cause the cell to overheat and it will also shorten the number of useful cycles you can get from it.
A P7 driven at 1 amp will be brighter than a P4 driven at 1 amp but the increase in brightness won't be earth shattering due to the way we perceive differences in brightness levels.
LEDninja
Flashlight Enthusiast
My L0D CE /10440 left, My MTE P7 5 mode on medium right.
L0D CE/10440 has been measured by others at 1.1A & 1.2A. MTE medium has been measured at 1.12A.
And both lights on high.
The MTE was measured at 2.2A. At 2.2A or 3C a RCR123A might just go
. (BTW a modder got 3.8A from freshly charged 3D batteries in his mod! That is 5C for an RCR123A).
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For the record, just because I did it doesn't mean it's safe. With that light I get 2.2A discharge from the R123 with the Triflupic on burst. At brightness level 8 I get 1.6A. It will overheat & damage the battery.
I'm using cheap protected Trusfires & Ultrafires in it that I have laying around. No way I'm using my AWs in it.
I'm only using the R123 temporarily. I'll be using a 14670 but even with this cell battety damage is probable. Too bad there's no cheap china 14670s.
TigerhawkT3
Flashlight Enthusiast
LEDninja, why are you worried about a 3C (2.2A) rate for an RCR123A but not an almost 4C (1.2A) rate for a 10440?
Perhaps a LiFePO4 with a boost driver would be the way to go.
Perhaps a LiFePO4 with a boost driver would be the way to go.
LEDninja
Flashlight Enthusiast
I do not use a 10440 in my L0D CE normally. Just used it for the beamshots. Normally the 10440 is in my Ultrafire 602C where the circuitry keeps the drain at 450 mA or 1.5C.
I thought LiFePO4 usually can take less current than a Li-on.
TigerhawkT3
Flashlight Enthusiast
It varies. Some are only capable of a couple C, but others can handle up to 15C.
