TAU® - Always-charged power bank

It’s genuinely tiny enough to live on my keychain, and I love that I can charge my phone, earbuds, or tablet without carrying a separate cable. The Lightning plug fits snugly, so it doesn’t fall off mid-charge.

I've been using this on my e-bike commutes and it's tiny enough to just live in my pocket. The built-in Lightning tip means I never have to dig for a cable, and it topped my phone up in about half an hour.

I keep this clipped to my keychain and barely notice it's there until my phone's about to die. Having the Lightning, Micro USB, and USB-C all built in means I never dig around for a cable anymore. Charges my phone enough to get through the rest of the day, which is all I really wanted.