Although it may seem like cheating to specify multiple devices in one entry, SlashGear believes that having all three of these battery charges happening at the same time is extremely useful. I highly recommend having all three for international travel.
When purchasing a portable charger, choose one that is compatible with most devices. The best brand is Anker 737 (PowerCore III Elite 26K). It has enough power to charge a laptop or tablet, and can accommodate multiple small devices such as smartphones, smartwatches, and wireless earbuds. It’s currently on sale on Amazon for $129.99.
Rather than carrying around separate cords for each gadget, consider purchasing a multi-purpose charging cable to minimize clutter. Minlu’s pack of two 4-in-1 retractable multi-charging cables has two Lightning ports, a USB-C port, and a micro USB port with data transfer capabilities, covering a wide range of device types. The length can be adjusted up to 4 feet, making it convenient for travel. It’s also reasonably priced on Amazon at $18.99, and has received great reviews from recent customers.
The most important of the three is a travel adapter that allows you to connect your electronics to different styles of electrical outlets, whether you’re traveling to the UK, Europe, Australia, China, or elsewhere. Insignia’s all-in-one universal adapter is available at Best Buy for $24.99 and features two additional USB ports for multi-charging certain devices and slots for four common international plug types. This model does not have voltage conversion capabilities, so be careful not to bring 110V-only equipment if you are going to a country where 220V is the norm.