Hello All,

I bit of a NooB (and perhaps dumb) question here:

I've built several sabers with a variety of boards and have always gotten my batteries from TCSS. With that said, I am still learning when it come to Lipo batteries.

A friend of mine recently quit vaping and gave me 2 of his 3.7v 18650 that he says have barely been used.

They are "Black Cell" Proton 3.7v 3000mah 40A. My questions is, will these fry my CFX board (or any other for that matter) or my Neopixel/LEDs because of the 40A rating?

My apologizes if this is a dumb question, I couldn't find anything regarding this. Thanks in advance for your help

Proton battery 3.7.jpg