Anker’s 36W 4-Port USB Wall Charger is the best multiport USB charger for most people. It’s the most powerful charger that plugs directly into a wall outlet, letting you fast-charge up to three full-size iPads at once or four at a slower rate. (Or you can fast-charge two iPads and two smartphones.) It’s also smaller than the competition, and it’s affordable. Anker has built a strong reputation in the mobile-accessory field with well-designed products.