This is the latest generation of AMAX inno, and like with the 1550mAh they also really did their homework on this capacity.
This Lipo has a normal form factor, so this is not something like the 1550mAh square one.
The 208g weight is still good for the capacity, but beside the great performance something to keep in mind. The temperature is at the higher end, but still in a good range. AMAX now does give you the opportonity to select between 2 really good batterys: one with 1550mAh and a good weight, and also a really good performing 1800mAh for longer flights, but with significant more weight. So you can choose what you really need.
The packaging (something i do not realy care about) is nice with a metal box and a velvet bag, quite something unusual. Also the price is still in a fair range for a good performing 1800mAh Lipo.