u/Tigs_ This pushes 3.9A, but your cable will regulate it to 3A. If you don't know Ohms Law, your wire is the resistance, the wall charger or Bank will regulate how many Watts and Amps go through. Even if you had a 10A charger, the cable will make it 3A.

I'm just helping you understand how the chargers work.

I would say yes. There is a lower mAh from there, too.

They might be heavy. They charge fairly quick. Yeah, I think they'll do quite well.

Don't let it get too hot, mainly because heat drains batteries. Don't leave it on the charger overnight. Unplug it when it hits 100%. If you are going to leave them for a long time, have it charged to 50%. Do not get liquid on it! Dont drop these and don't take them apart.