Laptop's Portable Charger External Battery Pack Power Bank 50000mAh 5/12/20v for Laptop & Notebook-Most Mobile Phone Tablet

I used a laptop with a pair of iPhones for approx 9 hours using this battery bank before it ran out. I didnt expect it to last that long. It also took very little time to charge up fully. In a black out this power bank would be extremely useful and also going outdoors for hikes or camping. It is a real shame though that it cant be charged via solar panel, even if it was super slow. All free energy is welcome to me. Great kit though and I would highly recommend it to those who like to use a laptop outdoors. It can run one for a long time.

It's simply fine,works with basically everything in between 5-20v....but when it's charging something with 20v, it's pretty hot!is that okay or something wrong with the power bank?it's hold charge...cheers

It's a big pack and very heavy - with the included pouch it's nearly 1.3kg without the pouch 1.2kg. Saying that it holds a lot of backup power 50k mAh. It charges my Surface Pro quickly and phone at the same time. I've used it for a few days now and very impressed. One word of warning, the 12V plug jack is very critical size requirement at 5.5mm x 2.1mm. The power-pack comes with many adapters for multiple types of laptops etc. I've only used it for my Surface Pro at the moment and it works great. I don't know exactly how many charges it will give because I don't drain the surface battery fully while travelling but so far it's been eight top ups shall I say. So far so good and recommended. Apologies for the poor pictures but they give an idea of what the pack is like and what to expect.

I have 2 of these powering a Raspberry Pi laptop with a 7w 15.6" FHD screen. One powers the screen and the other powers the Pi and all other peripherals (SSD, BT keyboard, sound bar etc). It might sound like overkill, but the laptop runs for a staggering 41 hours before needing a recharge. If I only need it to run for a few hours, I can remove one of the batteries and power it all from the other, or remove both of them and run on the Pi's 12000mah battery and a 26k mah battery to power the screen (this really lightens the load!) The batteries run very cool - cooler than body temperature so always cool to the touch - and recharge relatively quickly (as fast as a 26,000mAh battery I have). When there was a slight hiccup with my second order, the seller was in contact with me immediately and together we worked out a solution. It was fast and efficient and friendly. They arrive nicely packaged and with instructions on the care, maintenance and use of the device, and there is even a nice fabric zip-bag to put it in (with a pocket for cables). Excellent value for money, and a genuine 50k/mAh battery (unlike some that claim to be).

I use it for Dell Inspiron 2 in 1 17 inch screen. My battery is damaged and can’t charge it but works perfectly from the power connection. This power bank lets me to run my laptop for nearly 16 hours. I have 2 days of remote work of one charge. Best to charge overnight as it takes time. Power bank is bit heavy. Comes with foam cover which does protect it pretty well. There is also a variety of extensions to connect different laptops if needed.

Small and not too heavy

UPDATE: It has now stopped charging my Dell with the dreaded (for Dell laptop users) "The AC power adaptor is not recognised..." All other power adaptors still work, tried cleared NVRAM, Bios updates etc. This now also crashes my Asus when charging so it is not just the Dell connector. I hope this is a faulty unit but cannot see how to get it fixed/replaced as am now outside the return window .... Finally battery that works on the Dell Inspiron 15 7560 AND an Asus Zenbook UX31E!! I have been through the two official Dell power banks and neither works! This battery can recharge my Dell at least 3 times! The battery is flat but as heavy as the Dell (not an ultrabook) itself. but then you have all this storage. I would love the same technology in a smaller power bank (and lower price) as I only wanted to extend my laptop life for a day away from home not 3 or 4! Still the best power bank I have ever had. Still will be great at festivals charging my vape batteries, lights, shower, tablets as well as phones. Much easier than carrying a 12v lead acid leisure battery.

Purchased this to extend the life of my laptop battery while working out on site. I can now work on my Acer Aspire E15 laptop for about two days without needing mains power. I can even carry on working while the MaxOak is charging my laptop. It is quite robust and comes with a nice soft case. I did cut a small hole in the soft case to allow me to keep the case on while charging my laptop. I was tempted to drop to 4 stars because the cable from the charger to my laptop could do with being a bit longer, I did contact the manufacturer but they said the only supply the cable in one length. I have managed even though it is a little short and given the greatly extended laptop battery life I didn't feel it was fair to mark down on just this small point.