View Single Post
  #11   Report Post  
Posted to sci.electronics.repair
[email protected] pfjw@aol.com is offline
external usenet poster
 
Posts: 1,625
Default Batteries make flashilight hot.

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