Goal Zero Switch 10 Core Power Bank – 2,600mAh Rechargeable Battery with Built-In USB Tip and LED Indicator

No cable to lose, ever. Flip out the USB tip, plug it straight into the phone, done. It's featherweight and solar-ready, which mattered to me since I already have a Nomad panel. Gives my phone just about a full charge. For under fifteen bucks this is a no-brainer.

Keep it in the car console. The built-in tip means no tangled cords, and the LED indicator tells me at a glance if it's ready. Capacity is modest, so don't expect multiple charges, but for a top-up it's great.

Light, simple, works perfectly.

It does what it says - one phone charge, roughly. The flip-out tip is convenient but feels like it could snap if I'm careless. Fine as a lightweight emergency option, just know 2,600mAh isn't much.

Weighs almost nothing so I don't notice it in my pack. Charged my phone from 15% to 90% on the trail, which is all I needed for maps. Solar input is slow but it's peace of mind on longer trips.

Bought three for the family. Everyone from my teenager to my father-in-law uses theirs. The built-in tip means nobody asks me where the charging cable went. Simple and sturdy.

Love the concept but the flip-out USB tip on mine doesn't sit firmly in the phone port, so it loses connection if bumped. Had to hold it at an angle sometimes. Might be my unit, but it's frustrating.

This little thing has rescued me twice - once at the airport, once when my car died and I needed my phone for the roadside app. It holds its charge for months in the glovebox. Tiny, tough, cheap. Everyone should have one.