Solarforce L2

Can someone help I just brought a solarforce l2 and it came with 2 cr123 i put a 18650 in and it works fine. I looked at the r2 drop in and it says 4.2-8.4v but a 18650 is only 3.7v so how come it works?

Its probably running direct drive at less than maximum output.

When a 18650 is fully charge it reads 4.2V then decreases in voltage as you use it. At 3.7 volts, your batt is almost depleted. Same story with RCR123.

So how come it has 4.2 on it as a min if it works at less sorry I dont understand im still a noob atm.

mine is reading 4v atm but will it work for much longer if it says 4.2 min?

Your drop in will in regulation or constant output between 4.2 and 8.4 volts. Below that and your in direct drive mode or its constantly dimming.

Ok thanks for the help. I best get a new drop in then

Why? Don't worry, this one will work just fine.

Hrvoje

I just thought constant output was better?

If you use 2 batts you can get your constant outputwith a sudden cut of with protected bats. Or you can have long run times with a gracefull decline in output. Then you top the bat off for full output again. I prefer using an18650 bat in you situation. Your dropin is more versatile in its current configuration.

carl8190 said:

Can someone help I just brought a solarforce l2 and it came with 2 cr123 i put a 18650 in and it works fine. I looked at the r2 drop in and it says 4.2-8.4v but a 18650 is only 3.7v so how come it works?

Click to expand...

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What voltage does your 18650 measure ? ... I assume that you have a digital meter as you obviously charge up your 18650s ... Are you using a protected 18650 cell ? ...

As far as your flashlight is concerned , when you notice the light output dropping just put a charged 18650 in and recharge the other cell back to its fully charged voltage of 4.2 volts ... Before charging , make a note of the voltage of the used cell for future reference ... 3.6 volts is empty , 3.7 volts is about 20% left , 3.8 volts is about 40% left.

You might feel better by getting another drop-in , they are available for less than £10 on the dreaded Ebay ... I am considering getting a three mode one with just a high , medium and low output for one of my L2s ... At present they have five modes in.
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