CrankyCoder
Member
- Joined
- Mar 11, 2017
- Messages
- 95
Sometimes learning this new stuff I start feeling dumb.
But then I remember there are places like this with you smart people and I feel better!
So here is my question.
If you have 2 batteries. Lets say we are using 18650 because... why wouldn't we be.
1 is charged at 4.2v (nice and full)
1 is lower (not dead) but sitting around 3.4 because it goes used in a flashlight or something.
Now. If I connect these 2 batteries in parallel, my understanding is that the 4.2 is going to try to charge the 3.4 battery.
What kind of current are we talking there? Is there a formula?
Now lets say we have a nice big pack of 79 cells that are all already in parallel and we decide to throw mr 3.4 in as the 80th cell. What kind of current is going to be flowing to that battery?
Are we talking like full speed ahead multiple amps at a time? or is there a nice formula to give an idea on how much current would flow.
Thanks Smart People!!!!
But then I remember there are places like this with you smart people and I feel better!
So here is my question.
If you have 2 batteries. Lets say we are using 18650 because... why wouldn't we be.
1 is charged at 4.2v (nice and full)
1 is lower (not dead) but sitting around 3.4 because it goes used in a flashlight or something.
Now. If I connect these 2 batteries in parallel, my understanding is that the 4.2 is going to try to charge the 3.4 battery.
What kind of current are we talking there? Is there a formula?
Now lets say we have a nice big pack of 79 cells that are all already in parallel and we decide to throw mr 3.4 in as the 80th cell. What kind of current is going to be flowing to that battery?
Are we talking like full speed ahead multiple amps at a time? or is there a nice formula to give an idea on how much current would flow.
Thanks Smart People!!!!