Tailcap current draw for popular lights?

flatline

Flashlight Enthusiast
Joined
Jul 6, 2009
Messages
1,923
Location
Tennessee
Many descriptions of lights include the current at the emitter for each mode, but I don't think I've seen anyone describe the total current draw from the battery. I realize that the current draw is dependent on the battery used (voltage, voltage sag, and internal resistance will all play a part in this), but it seems like any data is better than no data.

I got interested in this when someone gave me some ER14505s (3.6v, 100mA maximum sustainable current) and I discovered that I couldn't find the information I needed online to predict which modes would work and which wouldn't if I used a ER14505 in my Quark AA. Not a big deal if you have the battery and flashlight to experiment with, but if this were important to a purchase decision, you'd be stuck.

Does this data exist anywhere? If not, would there be value to creating a thread where people post make/model of light, the battery used (preferably with a measurement of the starting voltage), and their measurements of current draw for each mode?

--flatline
 

HKJ

Flashaholic
Joined
Mar 26, 2008
Messages
9,715
Location
Copenhagen, Denmark
Many descriptions of lights include the current at the emitter for each mode, but I don't think I've seen anyone describe the total current draw from the battery. I realize that the current draw is dependent on the battery used (voltage, voltage sag, and internal resistance will all play a part in this), but it seems like any data is better than no data.

I usual include the values with my reviews, but they are in Danish (You can find them on my website).
But these values are not very useful at high brightness/current values, because batteries can not keep the voltage constant. In some of my never review I have improved this, by doing a voltage/current/brightness graph, you can find some examples here.
 
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