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How to change the configuration of a lithium cell pack ?
I’m working on a project were I have to be able to adjust the voltage of my output by 3.7 volt increments.
Example:
12 18650 batteries hooked up in series and have the voltage change from 44.4 to 22.2 to 11.1
Essential I’m trying to go from a 12s to a 3s4p or 4p3s cell configuration.
Discussions
3 years ago
Here is how you do four batteries,
14.8 V = four in series,
7.4 V = two in series in parallel with two more in series,
3.7 V = four in parallel.
Be sure to click each pic to see the entire image..
3 years ago
And what stops you from using simple switches?
Answer 3 years ago
Exactly. Wire the batteries in series. Add a wire in the middle of the stack and one 3 batteries in. Now use a selector switch to select between the 3 different wires for the 3 desired outputs. The problem here is charging. You will have to charge each battery individually.