HISdigital has this younger brother Gear Up 13000mAh Portable AC Power Bank (the “Power Bank”) to the bigger 20000mAh Power Bank. It is designed for a continuous AC output power of 55W and a peak AC output power of 65W. My HP Envy 15.6” notebook’s power adaptor output is 19.5v x 3.33A or 65W. To test the product, I started charging my HP when its battery was at 67%. It climbed up 10% to 77% after 14 minutes while I was continuously using the computer. I then shut down the computer and let it charge for 12 minutes. My HP battery reached 87%, or a 10% gain for merely 12 minutes of charging. It still has >25% power left after these charges - an indication that my notebook computer is continuously drawing more power from the 55W power bank.

Other power banks provide different tip sizes to charge the computer directly. But there is no guarantee one of those tips is the right tip - which I found out painfully with my HP Envy 15. It is definitely a no go for a gadget that requires direct AC inputs. The clever design of providing the AC outlet allows the user to plug in his/her power adaptor which solves all these unknown issues. It charges my notebook PC and it lights a 15W CFL lamp for 2.5hrs. The AC outlet is like any wall AC outlet. Away from this environment, you can plug a lamp to light up the camp, boat, or any imaginable rescue scenario. Just imagine a beacon of light which lasts hours and hours if you’re under the snow or stranded in the mountains. The implication could mean life or death by having or not having this Power Bank.

Dramatics aside, unlike other products requiring 2 different types of USB ports for cell phones and other devices, this Power Bank has 2 USB ports which regulate the power output automatically. This feature alone can save your expensive phone if you are not sure which USB port to plug in for re-charging.

Aside from the charging safeguards, the Power Bank has this self-regulating automatic shutdowns ability:
• Electronic overload protection;
• Low battery voltage protection;
• High/Low input voltage protection;
• Overheat protection;
• Standby timer off;
• Overcharge protection; and
• Charging timer and temperature protection.

As described in HISdigital’s in-depth product information page http://www.hisdigital.com/ca/product2-871.shtml, this Power Bank uses a premium battery material that is qualified in charging Tesla auto-pilot electric car. Besides the quality internal components, the solid pure white casing is simply elegant. It is sized like a pocketbook and weighs 400g. It is fully charged with all 4 indicator lights on with just an hour. This is a Power Bank to behold.

Amazing product! To be able to get an AC power out from something this small feels almost unreal. It even fits in your jacket pocket. Perfect product if you travel a lot and need to charge your notebook, tablet or cellphone, especially on airplanes where you rarely find AC outlets at your seat. From now on I will never miss another ending of a movie when I’m travelling due to battery loss in my tablet.