Blizzard has provided more details on Catalyst charges in Dragonflight.

As mentioned in our previous post:

All characters on your account can contribute progress toward completing a weekly quest for Catalyst charges.

Each character can spend charges individually.

(Source)

The future is now!

We’ve seen some recent feedback on the Catalyst that we’d like to speak to, with a bit of clarification on how we’re updating the Catalyst.

When the Catalyst becomes available in Dragonflight Season 1, there will not be a new currency. Instead, there will be a weekly quest that simply requires doing the same sorts of group content that provide you with Catalyst-eligible gear in the first place. Notably:

All characters on your WoW account can contribute progress towards completing this quest.

Completing the quest awards 1 charge to all current and future characters on your WoW account.

Each of your characters can spend charges individually.

So, if you have done the quest 3 three times, and used 3 charges on your main character, a new alt that reaches level 70 will have 3 charges of their own available.

Thank you very much for your feedback!