Lumsing is an electronics manufacturer which really takes quality seriously, their products are always very well built and perfectly working. That is why I keep reviewing them; I’m never disappointed!
Let’s begin with something basic but not always true: it’s identical to the one in the pictures, if not better. It just looks good.
The design is very simple and the build quality is outstanding, it’s made of a single piece of aluminum sealed on the top and on the bottom, with a substantial weight due to the large batteries present inside.
The USB ports output the declared wattage and the capacity is also very close to the one they claim (note that no power bank actually carries the declared mAh).
The little flash light is OK, I wouldn’t use it to survive in a dark forest, but if you’re looking for something in the dark it might come in handy.
There are also 4 LEDs to understand at what level of charge the battery is: 1 flashing LED: 0-25%; 1 lit LED : 25-50%; 2 LEDs: 50-75%; 3 LEDs: 75-100%; 4 LEDs: 95- 100%.
I honestly cannot find a flaw in this power bank.. Maybe the size? But then if it was smaller where would we put the 13400mAh?
The Lumsing 13400mAh Power Bank is a very useful accessory for anyone who stays a lot of time outside or is going for a trip, you should be juiced up for at least 4-5 days, depending on the use of the smartphone of course. In that case I always recommend to let the smartphone do gown to 30% charge and then charge it back to 100%, having it always on charge isn’t good both for the smartphone and the power bank.