Hi
when i am browsing on the net,i always see graphs which show discharge curves of flashlight battery that show the voltage change,the capacity change or the lumen change when the current is constant.
does someone has a graph,that will show me the voltage curve in direct drive flashlight,when current is changing during the battery voltage decrease over time?(especially,on the first second and minutes of operation till it drop to about 2.4v).
i mean if we take fresh 3*aaa alkaline battery with open circuit voltage of 4.8v(3*1.6v=4.8v)and internal resistance of 0.15-0.30ohm(each one),put them in direct drive flashlight of xr-e cree led.how does the battery voltage curve and the current curve will look like over time?(the graph may consider only the internal resistance of the battery,or it could consider also the resistance of the flashlight parts:wires,springs contacts and etc.whatever you have)
PS.
when i said direct drive,i mean the battery is connected direct to the led without regulation or any current limiting component.
thanks in advance.