Advances in mobile battery charging over the past half - decade have been extraordinary. (slashgear.com)
Mobile batteries plug - in to your device to give you an extra charge when your device is running low on battery. (twiniversity.com)
It's still a bit annoying that OnePlus hasn't managed to get this technology into its own mobile battery packs, or get some cross-compatibility with Qualcomm Quick Charge, but if you plan to stick with OnePlus it's worth getting its proprietary chargers. (androidcentral.com)