Run-Time Plot - SureFire L4-HA

[Roy]

This runtime plot is for a SureFire L4-HA using 2x123 SureFire 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 i.08).

The vertical axis is in 0.100vdc per division which is equivalent to 100 footcandles per division. The horizontal axis is in 15 minutes per division

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

The runtime to 50% of max brightness = one hour and 28 minutes

 

[coloradotim]

Nice job. Thanks for posting that. Gotsta get me one of them L4s! /ubbthreads/images/graemlins/wink.gif

 

[jdriller]

Thanks, again, Roy! /ubbthreads/images/graemlins/thumbsup.gif

 

[JohnK]

This gets into the much reverred love for regulated lights.

I very much appreciate having my XXXXXXxxxxx unregulated one watt LED go for 4-5 hours at very decent brightness, without falling off to nothing at 1 1/2 hours. It was a very gradual dimming, aided by the LEDs ability to stay with the program without shutting off quickly as voltage/current slows.

I dare say that it would have the capability to keep me safe in a bad environment for a lot more hours if need be.

I completed my task, and was not disappointed in the performance of the light, and I was not surprised by an unexpected LACK of necessary light.

I rarely shine my lights at white walls.

 

[DBrier]

Any chance of a Runtime Plot using the Pila 168S Roy?

 

[Roy]

....No to using any type of rechargeable battery. I don't use rechargeable batteries in flashlights. I don't use my lights on a daily basis and have found that they are dead by the time I need to use them.

 

[Frangible]

LiIons don't have high self-discharge like NiMH. Their self discharge is more like disposable lithiums.

 

[CM]

[ QUOTE ]
Roy said:
....No to using any type of rechargeable battery. I don't use rechargeable batteries in flashlights. I don't use my lights on a daily basis and have found that they are dead by the time I need to use them.

[/ QUOTE ]

You need to try Li-Ions like Pila's. They have much better retention than Nickel based rechargeables. I don't use 123's any more except in the Arcs. I let one sit for about 5 months and stuck it back in the charger and it stopped charging after a few minutes indicating it's still close to full charge. Do that with NiMH and it will continue charging like it was almost dead.

CM