Cectdigi Power Bank for Laptop 20000mah, 5V 9V 12V 15V 16V 19V 19.5V 20V 24V,Battery Charger with 22 Adapters for Laptop & Notebook & Mobile,for Sony Dell MacBook HP Lenovo Acer Samsung (Silver)

I Recommend Against Purchasing this Unit.This Battery Pack is not very well made so I should have been suspicious of the value. After 2 months the battery will just go into sleep mode and shut down while it is being used. Not very good for anything at that point.

If you're looking for a slim power bank that can give your laptop a quick charge, get this one. It was one of the cheaper options available, so I took a bit of a risk buying this despite the lack of customer reviews. It quickly charges up my MacBook and adds 6 hours of juice on a full charge. Charging the power banks is pretty fast, 3-4 hours to top it up.As long as you select the correct voltage and adapter attachment, you can charge up anything. Theres a fast charging USB port too if you'd like to charge your smaller devices.One thing that can't be done is charging the power bank and charging your laptop at the same time. You can only either charge the power bank via the wall plug-in, or charge your computer via the power bank. It's a minor inconvenience that there is no pass-through, but it's not a deal-breaker.The silver color looks great. I've been using this for about a week now, and I'll update this review on the quality in a few more weeks. So far, it's looking pretty good! 2-19-19

This worked flawlessly to power my Z1 travel CPAP. The battery bank has multiple voltage selections and one (15v) was ideal for what the Z1 CPAP was expecting. In fact, the cable that shipped with the battery bank plugged directly into the Z1--no adapter required. I tested it overnight and it operated flawlessly--the battery bank was still showing 75% charge the next morning. I also tested it with my Resmed Airsense 10 (which I use at home) and, unfortunately, the battery bank didn't have enough power to keep it on all night (perhaps due to the humidifier and heated hose). Note that the Resmed requires a special adapter cable you'll need to purchase separately). I will definitely be taking this battery bank with me while camping to both charge phones and power my Z1! It's also MUCH cheaper than the official batter pack sold by Z1. (Note: I also tried some battery banks that provide AC power... the losses involved in converting DC to AC back to DC were just too great and couldn't power the Z1 overnight).