Use the battery tabs to solder the two batteries together.
Solder the voltage regulator board between the batteries. Be careful not to heat the batteries too much.
I used tape on the two ends of the batteries, but a heat shrink tube would work better.
Your contributions are licensed under the open source Creative Commons license.
Insert a new line below
Insert a new line above
Indent current line
Unindent current line
Delete current line
Navigate to next step.
Navigate to previous step.