I just installed my first Proffie Board V2.2. Ive used two different batteries. I charged both for days and still got the Low Battery and instant shut off. So I bought a new Sony 3.7 and got the same Low Battery even after I charged it for 48 hours. It does have a memory card with 17 different fonts from The Saber Merchant on Etsy. I need help, please
This could mean that the voltage measurements are wrong.
It could also mean that the voltage actually is low.
What current is your battery rated for?
Have you measured the voltage while the saber is on? (might be difficult if it turns off right away.)
If you measure the voltage when the saber is off, does it match what you see in the serial monitor?