I need to replace the 18650 battery of one application. The battery doesn't have any marking about volts, mAh or amperes.
Because it's 18650, the voltage is fixed - done. mAh - will use 2000mAh (let's say or higher.)
Now I got stuck when I was looking for battery 18650 2000mAh. I can see 5A, 10A, 20A or even more. Not getting what current matters here.
Wondering if someone can help me understand it?
What will happen if I use same volt and capacity battery but different in current.
I may sound rubbish, but trust me I have tried multiple articles but no exact scenario and answer.