ERS Deploy During Quali

@Monzstar83 You sure you're looking at the MGU-K deployment gauge and not the ES gauge?

I'm not a fan of this year's HUD as it makes this info harder to see. But notice how the yellow bar at the center is your ES, your whole ERS battery. I had a number from a proper source somewhere but can't find it right now, but you can bet that the ES can hold significantly more than 4MJ. So you will never go from 100% to zero in a single lap as that would require dumping way more than 4MJ.

The MGU-K deployment cap (4MJ) is represented by the green outline on the throttle gauge on the right. It will always start the lap (any lap) full and empty as you go about the track. This one should, indeed, zero out or get close to zero as you wrap a lap on Hotlap mode.

The MGU-K harvest cap (2MJ) is represented by the red outline on the brake gauge on the left. Again, it will always start the lap empty – it's a harvesting cap, not deployment after all.

Taking this qualifying session from Marcel in Bahrain, for instance. Top pic is when he's approaching the final corner on his outlap, about to switch the ERS to Hotlap map. Bottom pic is him at the end of his hotlap, having drained most of the MGU-K 4MJ cap, and the last one is when he's about to cross the S/F line – when the caps get restored back to full.