I've found old arduinio project from Gitlab which runs the circuit with Lithium Ion Polymer Battery - 400mAh Unfortunately i wont be able find any Lip 400mAh in my country.Lucky enough i found one supplier has 1200mAh Lipo but i dont know how to read the data sheet!(forgive me I'm still a beginner). Im scared to use the 1200mAh as original circuit has MAX1704 fuelGauge and arduino code suppose shows the battery charging percentage on LCD display.
so project recommended 400mAh Lipo battery datasheet has below standard: https://www.sparkfun.com/products/13851
and Lipo I found 1200mAh battery has below datasheet:
can someone kindly enough to tell me if this is safe ?and tell me how to read this C rate and C5 rate difference please!