I have a 8 AA batteries (12V total) that is powering a light that draws .0517A.
The light no longer outputs enough light when the battery voltage drops to 8Vdc.
Typically I'd calculate battery life via:
2.5Ah * 8 = 20AH.
Then:
20AH/.0517A = 386 hours.
Does this equation change if I want to...
I'm testing a 18650 LI-ION RECHARGEABLE BATTERY, that gets written on it "9900mAh 3.7v", for a low power sensor project.
My question is what am i doing wrong cause I only can get around 800mAh out of it.
The only element that I can not put in sleeping mode is a PIR (3mA => 800/3 ~ 11 days...
