Hello everyone, today I will discuss my personal experience about this power bank. Few months ago, my friend bought this and I borrow from him last month and it was my worst experience with a power bank because its battery is 4000mAh on paper but it doesn’t charged my 3400mAh phone’s battery. So its battery life is not so good. And it is obviously not value for money product. And its design is also very bad. And unfortunately, its durability is also worst. So I don’t recommend it to buy.