Chosen Solution
My s6 is charging very very slowly. It Takes About 6 hours to fully charge. I have swapped the USB board against a new one, done a wipe a thousand times, tried a dozen chargers and cables but nothing will help. It charges only at 433mA. Has anyone an idea what else could the problem?
Of those dozens of chargers and cables, were any of them rated at higher than .5A? Remember that a cheap cable will limit how much current can be drawn even from a good charger. I’d say find a brand name (Samsung for instance) charger rated at 2amps and use that charger with the cable that came with it. Or find a brand name Quick Charge 3.0 charger that comes with its own cable and use that. Other possibilities could be logic board issues (liquid damage, or even a manufacturing defect that finally showed up), or the battery itself.