For my next project I plan to use a 3.7v LiPo battery to power a 3.3v Arduino pro mini .
I would like to have the ability to check the battery level and charge it using a USB charger without removing the battery from the project.
I already figured out that I'll need a LiPo fuel gauge for measuring the battery level and also some sort of USB charging circuit for the charging procedure.
My questions are as following:
- How do I connect the battery to both the fuel gauge, charging circuit and arduino at the same time?
- Can someone recommend the a specific model of fuel gauge and charging circuit to use?