Does it matter if I heal 1 health, or 250 health in relation to Sombra's ultimate charge rate? Would she receive the same amount of charge in both cases ?
It would appear that her hacked health packs earn you ult charge rate the same way that Soldier 76 and Ana do. That is 1 point of ult charge for every 1 point of health healed.
- "Heroes gain 1 charge for every 1 point of self-healing done.
- Soldier: 76, Ana, and Sombra gain 1 charge for every 1 point of healing."
As with any other character capable of healing others, the amount of ultimate charge gained depends on the amount of health healed.
As of the patch on February 27, 2018, Sombra no longer gains any ultimate charge by having teammates collect hacked health packs.