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Chuck,
Looks like the power usage on the Gen 2s and Gen 3s are the same (.9a), unless you have the 9" (1.2a)? I rarely run my FF on the highest back light setting either. I usually start at #6 in the dark and slowly make my way to #9 as needed. That does seem to help quite a bit on run time. I am guessing, by my run times, that the .9a is based on one of the highest back light settings.
You get more amps out of the LiFePo4 batteries than similar capacity lead acid also (like 90% vs 50-70%).
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