I just bought this battery at a local shop when I saw that they had a couple in stock. I will say this. I am actually impressed with it. I was very skeptical about buying it at first. I have not tried it out in my mech mod tube yet. It is a hybrid type and am still skeptical about using it in it. I charged it up and put it in my IPV Mini 2. Primarily I use a Sony VTC 5 in it. In comparison, it is kicking the VTC5's ass. I am getting more of a consistent draw from my IPV Mini 2 and the battery life being 1800mAh seems like an understatement. With this battery you cannot look at it with the 1800mAh rating for battery life. You have to look at the discharge rate which is calculated to C. A Sony VTC5 would be rated to 11.5C. The Aspire 18650 40A is rated for 22.21C.The Watt Hour rating for a Sony VTC5 is 9.62Wh. The Aspire 18650 40A is rated at 6.66Wh. Here is where it gets tricky. Even though according to these ratings, it would seem as though the VTC5 is has a better capacity. Yes it does theoretically. It has a capacity of 2600mAh compared to the 1800mAh of the Aspire battery. This means that you can get 2.6A per hour with a Sony VTC5 for 9.62hours compared to 1.8A per hour for 6.66 hours with the Aspire battery. Since the Aspire battery is able to provide a higher discharge rate for this time period and a more stable discharge through the life of the battery, you actually use less power of the battery. Like I said it was a tricky. This is what can make it last longer even though it is a weaker battery in terms of Wh and mAh.
With all that technical babble said, here is what you really want to know. It actually gave my IPV Mini 2 a more stable Amperage and was able to use more of the battery life than the VTC5 since it supplied more Amps at lower voltage. The vape was more consistent. I can honestly say, I might be buying a married pair to see how they vape in my Sigelei 150 since it tends to cut off early of a lot of low ohm, high wattage builds.