QTshine Power Banks, Portable Charger [Upgrade 25800mAh] Ultra Compact External Battery Pack, Dual USB High-Speed Charging Power Bank Power Pack with 4 LED Indicator for Smart phone Tablet

I bought this as a black Friday deal as I needed a new portable battery so still early days for testing. This was a little bigger and heavier than expected, but it is also twice the battery of my last one, so I'll take that trade. I also liked that it has 4 lights corresponding to how charged the battery is - 25,50,75,100%. The weight is fair and the inclusion of 2 usb slots so that two items can be charged at the same time is useful when I need to use both my personal and work phone at the same time.This battery is slow to charge, it took almost 10 hours to fully charge to 100% before first use, however it has now charged my phone twice and is still showing as fully charged, I estimate this means I can charge my S9 approx 8 or 9 times in a row from this battery. That's fab performance.It fits in jacket pockets, and I have used with multiple charging cords and had success with all.Will update after I have used for a few months.

I took this to a festivals, so had it from Thursday Sunday morning, and it died on the Sunday morning, but I did manage to get 3 whole charges for a dead phone out of it. All In all I was very pleased with it and worked out well for me. If I had stayed for and extra day I probably would of had problems so probably needed a second one. But for two or 3 days worth it's very very good. 5/5 stars for me!

I use this to keep my phone battery alive at work, it does the job.I did read other reviews on this device some were good some were bad, i took a gamble on it and yeah its alright. Charges my phone quite quickly, faster than my car charger.Now, to the people who said only worked once and died that's false.I thought this too.However, to fully utilize this device properly you first have to charge it for what seemed a ridiculous amount of time. Maybe over 24 hours to get the 4 led lights on.However this lasted me the entire week. Charged over the weekend and lasted until friday evening, using it every day.Then i thought as many it died for good, this wasnt the case, its just a very large battery that needs time to charge, left it to charge again 24 hours boom, good to go for another week.4 out of 5.Can't give it full marks because length of time to charge.

Excellent purchase, came in handy for my road trip .

It doesn’t like charging if using an adapter which didn’t help me any when I was abroad & on the road

Only used twice so far. Seems to work well for intended use (charging on the go). Needed a full charge on arrival; 10-11 hours aprox. Heavy, but expected that for size of battery. Arrived early and well packaged. Will hopefully order another for a friend after using a bit longer...want to test for a month first.Edit to add; had for over a year, used fully 2-3 times a week. Still working like new!! Also bought for 2 friends who also use regularly and give 10/10!Rating changed from 4* to 5*!

This initially worked well, but now it won't recharge, so cannot be used. Very disappointing as not useless.Only used a couple of times.

I won’t be using on a regular basis but on use for the sole reason I purchased the product it worked a treat. I have also used a couple times since and it still has plenty of battery since bing fully charged initially.It is a little big and heavy but for the purpose purchased that wasn’t an issue for me.