streetfighterken
Grand Master
2 amps? There's whole arcade cabinets that don't draw that.Just buy a pi power supply.
Most micro usb cables have very thin wires and can't handle the 2 amps current the pi need to boot properly.
The Pi only get's 4.7 to 4.8V and becomes unstable.
The pi power supply adapters only have 2 wires coming out and they are thicker.
The recommended power adapter for a Pi3 B+ is a 2.5 amp one.
Most phone chargers and general purpose adapters are unable to deliver that amount of current.