That is not what I asked. So let's ask it this way: When you turn the key to "Start", what is the voltage cross the battery?
To say it is "fully charged" sitting there is one thing, what is it under even the light load of "key on, attempting to start"?

But I missed something in your post: What fuse was blown?

Also, try this:
Turn the key to start, if it does not engage the starter, leave the key at "ON"; wait 30 seconds. Does the engine fan warp up to full speed? If so, your RCM's engine control relay output is missing. THis is caused by fractured solder, a bad EC relay on the RCM or very low (under 10 volts) on the coil of the EC relay.

If the fan does NOT warp up to high speed, we have an ECM/Clutch interlock/pulse module/low voltage issue.