Yes, you would use normal flap extension. To use the Alternate Flap Operation you are unnecessarily adding to your problems. Remember, if you are down to battery power only, you have very limited flight instruments left and a real effort in crew co-ordination is required to keep on top of everything especially if the wx is against you. Situational awareness can easily be lost. Also, as the flap position indicator is now u/s, you would never really know what flap setting you have. At least by using the flap lever in the normal sense you know where they should be. If a flap assym were to occur you would feel it very quickly in roll, but that would be a real bad day if your flaps failed/split as well and of course we all know that Mr Boeings aircraft don't suffer from multiple failures (!).
