Yes I did weedpharma. They show 2 resistors between the + and - terminals. The issue is, I have a + and - terminal from my battery but I also have to connect it to my arduino. That is where my confusion lies. Vout in the divider would be my out to my analog pin?
And -battery to Arduino ground.
A 2-resistor voltage divider chops the battery voltage in two.
Part of the battery voltage is across each resistor.
How much across each resistor depends on the resistor ratio.
You use the voltage across the lower resistor, so -batt (ground) and tap (analogue in).
A voltage divider is only needed when the battery voltage is higher than Arduino can handle (5volt on a 5volt Arduino).
A single cell LiPo (~3.7volt) can be measured directly.
A bit of caution there...
Wise to use a 10k resistor between battery+ and pin.
That protects the pin if you're doing something wrong, like forgetiong to turn the Arduino on first.
You may have heard of "phantom powering".