Why does my Phantom take so long to get GPS lock?

[FVP2350]

I might have an answer for this. I took my Phantom apart today to do some repairs. I even looked under the hood at the GPS.

The GPS has a tiny battery. I don't know for sure but maybe this battery is for recording GPS locations. Try replacing it and see if your lock times get batter.

The battery looks to be 3.0 volts
I tested 2 units the newer had 3.0
Volts the other had 1.0