powered oxygen tank

I do have an idea i want to toss in which i mainly want to be heard and hope for to be implimented:

An oxygen tank which is powered so we can stay in the water for longer BUT there’s no notification for when the battery runs out, only when the oxygen of the powered air tank is being used up.

Basically when the powered oxygen tank is powered it generates oxygen steadily and we don’t have to worry about it as long as there’s energy in the battery, the power cell would work the best for the powered oxygen tank as that has the most amount of energy per inventory slot.

I know it sound strong and i agree SO it should be mid to late game plus we have to be very deep to get it such as: 600 meters down atleast i think would suffice or atleast that

isn’t that just the portable oxygen generator ?