16170 or 17170 cells - interesting possibilites

[mudman cj]

Why would anyone want to use cells with such a small capacity? Well, because there are some great two cell heads such as the E2DL that could then be run at full output on a single cell body. Sure, run time would be short, but sometimes the size of the light matters more. For example, I holester Surefire heads on single cell bodies every day at work but rarely need to use one for more than a few minutes. I would virtually never need to run the cells down before the end of the day when I could recharge them. And I could always keep a spare 16340 around for 'emergencies'.

I know - no one is going to produce these cells, but it's still fun to talk about the possibilities. I have never seen anyone discuss this, but I can't help but wonder if anyone else out there would like to get there hands on such a thing. :candle:

 

[Kestrel]

I'd be into that and I understand your runtime reasoning - I EDC (in the daytime, of course) a two-level E1/P7 with an IMR16340 and never need anywhere close to the 12 minutes runtime on high. Thinking of your idea, since a protection circuit would waste too much volume on those cells, lets go for an IMR16170. I'd be in for two of those!:tinfoil:

 

[mudman cj]

I agree with them being IMR chemistry. Otherwise they wouldn't be capable of supplying enough current to run the E2DL I cited as an example. Assuming they would have a capacity around 250-300mAh with the standard cobalt chemistry they would be limited to about 500-600mA draw. With IMR chemistry they would probably have 200-250mAh capacity with a maximum delivery current of 1.6-2 Amps.

 

[Kestrel]

Well, I could wish for 10C, so close to 3 amps maybe? Either way, two of them in series could really run a P7 with a buck driver.:huh:

 

[mudman cj]

They might run at 10C without overheating, but I bet it would affect their cycle life. Oh well, I am one of the many that run 10440 cells at well over 2C. :devil:

They could deliver between 12 and 18 watts potentially, but I would suggest a limit of around 15 watts. That would even drive a 6 die Ostar at full power.