I have P2 motors. Recommendations batttery is rotor 3S Lipo. I found some but one were Made In China.
I found this: (TEAM ORION Lipo Battery 1600 Mah 3s 11.1V 50C ( XT60 ) LED Panel)
Chinese one I found : (Leopard Power 2600 Mah 11,1V 3s 30C Lipo Battery)


I need 18-20 minutes on air.

Can I use those ?
Any recommendations ?

Hello there gomidas. Good day and thank you for reaching out. I hope that you can get the best recommendation from our fellow DJI Co pilots who owns the DJI Phantom 2 and with regards to this matter. In addition, you may try check our DJI Where To Buy platform on this link ( https://www.dji.com/where-to-buy ) to see if the said battery that you need is available. Thank you.

Didn't you post this on the PP site a while back?  It sound like you're trying to build a drone, right?  So flight time depends on weight of the aircraft including the weight of the battery.  Some hobbyists have strung multiple batteries together to add flight time.  Generally the tiny battery you show in the photo won't give you a lot of flight time.  Good luck.