RE: Here's a new one....
I have had similar issues with 2 of the TP5000 10cell bricks in the past.2 separate packs purchased at different times
and experienced sudden loss of power (as in none) in flight. On both occasions I managed to get the plane back safely
and after removing the canopy & with model restrained, working the throttle and moving the battery wires power came
back and sparks came out of the packs.
The packs were retured to TP under warrany and had new wires welded on. I was told that they had a known QC issue.
Simon