Run-Time Plot - Civictor V1

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Roy

Roy

Farewell our Curmudgeon Administrator
Joined
Apr 14, 2002
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Location
Granbury, Tx USA
These runtime plots are for the Civictor V1 light using Alkaline and Lithium AA batteries..

Equipment used is a Extech Mdl 401021 Light Adapter into a Radio Shack 22-805 multimeter with a PC interface that is using Scopeview software (V 1.08).

The vertical axis is in VDC and is equivalent to 1Fc@1Ft per 1 mVDC. The horizontal axas is in units of time.

Be aware that your actual battery milage may vary from that indicated by this runtime plot.



AA Ultra Alkaline Battery
The runtime to 50% of max brightness = 1h 46m
v1-a.jpg




AA Battery Station Lithium battery.
The runtime to 50% max brightness = 3h 35m
v1-l.jpg
 
Roy, I'm sure I echo the sentiments of many when I say it's good to see you posting runtime charts again.

The Civictor appears to be the worst regulated out of the Fenix line of luxeon lights.
 
geepondy said:
Roy, I'm sure I echo the sentiments of many when I say it's good to see you posting runtime charts again.

The Civictor appears to be the worst regulated out of the Fenix line of luxeon lights.
Click to expand...

The Civictor V1 uses the same exact circuit as the L1/L1P
 
I know, sometimes I don't quite understand it. I thought the AA alkalines had close to the same capacity as the lithiums only the lithiums could deliver a higher, sustained current, meaning different shaped but approximately the same amount of light under the curves. However from looking at a lot of these graphs, one would get the impression the lithiums have two or three times the capacity of the alkalines. Is the regulators of the flashlights themselves, much less efficient with alkalines as opposed to lithiums and nimh rechargeables?

PlayboyJoeShmoe said:
Wow! The lithium curve ROMPS and STOMPS on the Alkaline curve! And they wouldn't be QUITE so expensive to use one at a time...
Click to expand...
 
geepondy said:
..I thought the AA alkalines had close to the same capacity as the lithiums only the lithiums could deliver a higher, sustained current, meaning different shaped but approximately the same amount of light under the curves...
Click to expand...
I may be oversimpliflying, but the capacity of a battery is dependent on how fast you're draining it. Because an alkaline has higher internal resistance than a lithium, it's capacity falls off sharply due to internal resistance loss as the current drain goes up; so in a high drain application like running a 1W lux, it delivers much less energy than a lithium which has lower internal resistance.

In a very low drain application - like running a cordless mouse - it would deliver all of its' rated mAH capacity and the advantage of the lithiums would be much less.
 
Ok, I should have realized that as I knew alkaline's had a higher internal resistance so the efficiency must be much less. LOL, when I was a kid, alkalines were king (and expensive) and I made do with the regular carbon zinc silver evereadys.
 
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