According to definition of GN condensers, they should be charged by a sort of GN particles. However, what is the "green" GN particles source other than "real" GN drives? I don't think CB has other power source to charge up GN condenser as "green" particles. Therefore, it is unreasonable that in Gundam 00 I 2314 all Gundams from Fereshte are using GN Condensers - They have nothing to charge the GN condenser.
Note that 00 raiser has power source to charge its condensers - 2 new generation Gundams operate together with it.