Just switched over from a Joye ego twist to the Kanger ipow and couldn't be happier. Paired with an aerotank mini and it's perfect for my needs. The biggest advantage is backlit LCD shows the battery charge which was lacking in the ego twist. It didn't even have button flashes or anything to indicate the current charge. Also the LCD shows the voltage which has a better range, 3.0-5.0V rather than the ego twists 3.2-4.8V. It still uses the same bottom twist mechanism as the ego twist but you don't have to use the markings which were sometimes hard to read especially in low lighting. The build quality is good and from what I know it uses the same circuitry.
Overall I'm very impressed. Would definitely recommend if you want a high quality easy to use battery without going to a full on mod.
Overall I'm very impressed. Would definitely recommend if you want a high quality easy to use battery without going to a full on mod.