On Fri, 24 Feb 2017 09:36:12 -0800 (PST), "
wrote:

On Thursday, February 23, 2017 at 2:25:19 PM UTC-5, mike wrote:


Might want to check that math.

OK. 50 x 9 = 450. 9 LEDs at 50 ma each.
3 x 1000 = 3000. 3 cells at 1000mah each.
3000 / 450 = 6.67. At 450 ma, that will go 6.67 hours.

The reality is probably different as all the shots/assumptions are center-mass. If the LEDs are 100ma outliers, if the cells are 1.4mah outliers, things do change, of course.

Peter Wieck
Melrose Park, PA
3 cells at 1000 mah each do NOT give you 3000 mah. They give you 1000
mah but at a higher voltage (4.5 vs 1.5). If you use mwh (watts)
instead of mah (amps), then you can add them.

(If the cells are wired in parallel instead of series, then you are
correct, but that isn't very common.)