But don't waste your time. If Apple says so - that's the way it is.
It averages 1% increase a min while charging, so no matter what apple says, it doesnt take me 4 hours to charge either of them lol so I guess I cant be the only one who's stuff charges that fast?
Thank you! Does it mean ,that I have to wait to connect it ,until my ipad reaches below 50%?
No. Charge it whenever you want. I know it's hard to believe after a decade of nicad batteries, but lithium ion batteries are not picky about when they are charged.
Even leaving them on the charger is not a problem. Modern charging circuits will stop when the battery is full and only give small burst charges when needed to for maintenance.