Ikea's 45W dual-port charger ($15) may be all you need. If you have several gadgets that need charging and don't mind the extra bulk, we recommend at least a three-port charger with 65 to 100 watts.

This single-port 45W charger is a much better option for MacBook ... or make sure that the laptops are at the front of the charging queue (Dual-Laptop Mode). A Low Current Mode helps to preserve ...