At the moment, this is an undesirable talent and that lots of people had high hopes for. The charge ability takes 16 seconds to recharge with it and if used in sequence (one after the other), it’ll take 32 seconds to get your 2 charges back. With the standard Charge ability, you can have charged 4 times in the same time-frame. In my opinion, the usefulness of being able to charge to an ally doesn’t overcome its significant recharge time.
I think the adjustment that needs to take place to bring it back into line with the current balance should be 12-14 second recharge time with individual timers for each charge. This would allow people the benefit of having an “improved Rush” while still giving a descent amount of down time if they fail to manage their charges wisely.