Season 17

Season 17 of GO Battle League, also called GO Battle League: Timeless Travels, lasts from December, 2023 to March , 2024. It is preceded by Season 16 and will be succeeded by Season 18. This GO Battle League Season runs concurrently with Timeless Travels.

Rewards
Basic Premium
 * Rank 5: Mysterious Item
 * Rank 10: 750 (Basic) / 1500 (Premium) Stardust
 * Rank 15: 1 (Basic) / 2 (Premium) Rare Candy
 * Rank 19: Pokémon Encounter
 * Other ranks:

Stardust

The random items can include:
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Reaching rank 19 awarded:

Reaching Ace rank and above awarded avatar items and an avatar pose inspired by Ingo from Pokémon Legends: Arceus.

Pokémon
Guaranteed first Pokémon encounters:
 * Hisuian Sneasel: rank 1 (one only)
 * Machoke: rank 6 (one only)
 * Deino: Ace rank
 * Goomy: Veteran rank
 * Jangmo-o: Expert rank
 * Pikachu Libre: Legend rank (one only)

Tier 5 Raid Bosses could be obtained starting at rank 20 during their time in raids.

End-of-Season rewards

 * (rank 19 or above)

Timed Research
GO Battle League Timed Research is for the GO Battle League Season 17. A Ticket for this Timed Research was available in the in-game shop at no cost from December, 2023, at 1:00 p.m. PDT to. Each part of the Timed Research had the same requirements, with the only difference being the rewards for completing each part.

Timeless Travels: GO Battle Day
Timeless Travels: GO Battle Day took place on February, 2024, from 12 a.m. local time to 11:59 p.m. local time. Master League and Evolution Cup: Great League Edition were available during this GO Battle Weekend.

Attack updates
These Attack updates went live at the start of the Season:

Attack changes

 * Mud-Slap: Energy gain increased from 8 to  in Trainer Battles.
 * Fire Spin: Base power increased from 9 to 10 in Trainer Battles.
 * Incinerate: Base power increased from 15 to 20 in Trainer Battles.
 * Blaze Kick: Base power increased from 55 to 60 in Trainer Battles.
 * Breaking Swipe: Chance to decrease the opponent's Attack decreased from 100% to  in Trainer Battles.
 * Iron Tail: Base power increased from 9 to 10 and energy gain increased from 6 to  in Trainer Battles.
 * Steel Wing: Energy gain increased from 5 to  in Trainer Battles.
 * Astonish: Base power increased from 5 to 9 in Trainer Battles.
 * Bubble: Base power increased from 7 to 8 in Trainer Battles.
 * Scald: Base power increased from 80 to 85 and chance to decrease the opponent's Attack increased from 30% to  in Trainer Battles.
 * Psychic: Base power decreased from 85 to 75 in Trainer Battles.

Attack availability
Some Pokémon received new Attacks to their standard Attack pools: