I got these to get back into FPV because they are light and wanted to get more flight time. But wow! they are light! A friend of mine had an old 1500 mah 3 cell and it was still lighter and the same size as that one! Definitely a must! I use this for my 5" and my FPV wing.
Nice and light weight with good power.
Great performance at a great price. Cheaper and lighter than similar
I normally use Tatu and these seem very good compared to them