4a Charger

4a Charger
WHY are laptop chargers allowed to get so hot?

i remember when i were a lad :)13.8v DC@ 5A would be regulated by a 2N3055 on a quite big heat sink- i mean how long can these 20v, 4A+ mini bricks last for @ silly temperatures?

anyone recommend buying several?
i think this question is too hard

theyre allowed to because no one tells them not to

IMAX B6 charging Cxarge 3S1P battery with 2C charge rate