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In Battlefield 3, Double XP only doubles the player's overall rank progression, not class or vehicle type progression.
In Battlefield 4, while Double XP is active, XP boosts can be used simultaneously with it, but are not themselves doubled. (i.e., Double XP (100% boost) + 50% Boost = 150% total boost)
XP Boosts in Battlefield Heroes increases experience gain is stackable with other XP Boosts. Boosts of the same type do not stack but extend their duration.
|Basic XP Boost||Awards 1.5 times normal XP|
|Boosted XP Boost||Awards 2 times normal XP|
|Supreme Boost||Awards 2.5 times normal XP|
XP Boosts allow players to gain more experience during play and can be purchased for limited time use in Battlefield Play4Free.
XP Boosts in Battlefield 4 are obtained randomly through Battlepacks. Once obtained, a boost can be activated in the pause menu and will stay active for the next hour of gameplay in a multiplayer match. There are currently four types:
|25% Boost||Awards 1.25 times normal XP|
|50% Boost||Awards 1.5 times normal XP|
|100% Boost||Awards 2 times normal XP|
|200% Boost||Awards 3 times normal XP|
- All available XP Boosts can be viewed in a "sum-up" in the right bottom corner of the menu (during a MP-match).
- An XP boost may be replaced by another though all remaining time of the former will be lost.
- A glitch may cause all XP Boosts to temporarily be unavailable for use.