Hopefully someone could help me with this. I'm learning myself, gradually, but this is something I just don't understand so I really need it cleared up.
I'm basing this question on the Fenix range, just because I have some for reference and because they're good examples for me to compare, but it applies to any light.
The Fenix P1D. Maximum output listed as 180 lumens from a 3.0 volt CR123A.
The L2D. Maximum output also 180 lumens, but from 2 x 1.5 volts AA, total 3.0 volts.
From what I understand (and I could be wrong of course) alkaline AA batteries start to dip in voltage once they are used. As far as I know, Nimh and lithium AAs do not dip in voltage, but again I'm quite probably wrong.
So, my question is this. How do AA lights like the L2D manage to keep the same output until the end of the life of the AAs? Is it that the digital regulation is that good, or is it actually the case that any AA light such as the L2D will become more dim as the batteries are drained? This is especially relevant to single AA lights such as the L1D. surely that will start to become more dim after just a short amount of battery use?
Thank you.
I'm basing this question on the Fenix range, just because I have some for reference and because they're good examples for me to compare, but it applies to any light.
The Fenix P1D. Maximum output listed as 180 lumens from a 3.0 volt CR123A.
The L2D. Maximum output also 180 lumens, but from 2 x 1.5 volts AA, total 3.0 volts.
From what I understand (and I could be wrong of course) alkaline AA batteries start to dip in voltage once they are used. As far as I know, Nimh and lithium AAs do not dip in voltage, but again I'm quite probably wrong.
So, my question is this. How do AA lights like the L2D manage to keep the same output until the end of the life of the AAs? Is it that the digital regulation is that good, or is it actually the case that any AA light such as the L2D will become more dim as the batteries are drained? This is especially relevant to single AA lights such as the L1D. surely that will start to become more dim after just a short amount of battery use?
Thank you.