RAVPower the battery but I can wholeheartedly recommend.
Already its packaging enjoy and not - as with no-name products - from a mere Plastktüte, but from a printed cardboard box (see product photo) is in the good of battery protected and kept an additional packaging.
Power reported is (in practice) the original ASUS Battery. The processing of the battery is also identical.
So why spend twice for the original? I can think of no reason.