For Battlefield, double XP is usually tied to a specific event or weekend rather than staying on permanently. In past Battlefield events, it has commonly run for a set window like a weekend or a few days, and the exact end time is typically announced by EA/DICE.

What that means

  • It is not usually an always-on bonus.
  • The duration depends on the specific game and event.
  • A lot of Battlefield 4-style events ran for roughly 48 to 58 hours or similar short periods.
  • In some cases, older Battlefield titles had longer community boost periods, but those still ended rather than running forever.

Practical answer

If you’re asking about a current Battlefield double XP event, the safest assumption is that it lasts only until the date/time shown in-game or in the official event post. If you want, I can also help narrow it down for a specific Battlefield game title.