I have 4 D cell NiCD batteries that are brand new. Each D cell battery is 1.2 volts. (They came with a charger)
I would like to use those batteries to power 4 of these or 4 of these flashlights together. Each of those flashlights are powered by 3 AAA batteries. Essentially I would put 2 lights in front and two in the back of the bike.
(I also have an additional 2 D Nicd batteries, but would prefer to keep it at 4.)
Is this possible? I suspect it is possible but what would it take to make it happen?
A few things to keep in mind:
Thanks for your support on this.
I would like to use those batteries to power 4 of these or 4 of these flashlights together. Each of those flashlights are powered by 3 AAA batteries. Essentially I would put 2 lights in front and two in the back of the bike.
(I also have an additional 2 D Nicd batteries, but would prefer to keep it at 4.)
Is this possible? I suspect it is possible but what would it take to make it happen?
A few things to keep in mind:
- I understand there are a number of options out there for bike lighting. My philosophy though is to make the best use of the stuff I already have; I acquired these flashlights and batteries completely free of charge.
- I have some electronics knowledge, but not enough to figure out this issue with "doing the math. I can proceed with trial and error by connecting the lights to the batteries (parallel or series? help) mediated by a potentiometer/variable resistor and crank it until it looks as bright as if each flashlight had their own 3 AAA battery supply. However, if any of you can direct me in a possible way of doing it right, I would prefer that.
- I don't go on very long bike rides at night. I don't need the brightness to be very high nor do I need it to last a long time.
Thanks for your support on this.