Goal Zero Sherpa 40 Power Bank (Open Box) – 12,000mAh Slim Portable Charger with USB-C, Micro USB, and Lightning Cables

Took this on a two-week trip and it charged my phone four times before needing a refill. Slim enough for a jacket pocket, and the built-in cables mean I never dig around for cords. Open box condition was essentially new.

Half price on an open box Goal Zero felt like a gamble, but it arrived clean with everything working. The Lightning cable is handy for my iPhone and the USB-C port charges fast. Only wish the capacity were a bit higher, but for the price I can't complain.

Fits in my purse without weighing it down. Charges my phone quickly and the indicator lights are easy to read. Very happy.

The power bank itself works fine and holds a charge well, but the attached micro USB cable feels a little thin compared to my old one. It does the job for topping up my phone around the house. For the discounted price it's still fair value.

Couldn't tell this from new. Arrived with about a 70% charge, no scuffs, all three cable types work. My kid uses it for school trips and I use it commuting. At this price I almost bought a second one.

Works when I need it, but I noticed it loses charge sitting in my drawer. Had to recharge it every couple of weeks even unused. Fine for frequent users, annoying for emergency kits.

I keep this in my laptop bag for long days out. The Sherpa 40 recharges my Pixel about two and a half times, which covers me. USB-C input means I can top it up with the same charger as my phone, which is convenient. Build quality feels sturdy despite the open box price.

Charges fast, works great.

I'm 68 and not great with gadgets, but this one is simple. The cables are attached so I don't lose them, and the little lights show how much power is left. My grandson set it up for me and now I take it fishing. It charges my phone and my wife's tablet without fuss.

Added this to our hurricane kit after last year's outage. A full charge sat ready for months and still powered my phone when we lost electricity for two days. Slim, light, and the three cable options cover every device in the house. At 50% off it was an easy decision.