Was the time-machine charged enough for two trips the first time?

[Fantastische Hure]

Trunks was able to use it twice on the same day.

Actually now that I think it about it, even the second trip might not have taken place even 30 days because of RoSaT but was used by Trunks the day after.

 

[Fantastische Hure]

Or was it for a round-trip?

 

[Ultimate Cell]

I think so

 

[Fantastische Hure]

I looked and yeah it said round-trip so yeah.