"Plop~~"
Xia Yu landed on the sea surface at a low speed. He was like a fish in water. He folded his parachute while sinking, then stepped on the sea water and pushed hard. The whole person was like a spear gun fired underwater, rushing away rapidly.
Thanks to the buff, he was still moving very fast underwater, but definitely not as fast as an airplane. At most, he could bully submarines or something. This was also the reason why Xia Yu did not choose to swim over from the Magic City.
Swimming across the Pacific Ocean, it seems that no one has ever challenged this record. Xia Yu has the ability but not the interest. He is only interested in scientific research now.
He swam all the way to the gate of his base. After the main system that controlled the base's operation authenticated his identity as the commander, it opened the door and let him in.
The drainage tank was drained of seawater, and the second hatch opened. The entire base was the same as before he left, but he was different.
Although Xia Yu has not yet obtained his bachelor's degree in economics, he already has the equivalent academic qualifications of a PhD in chemistry. It may still be a little difficult for him to publish papers, but he still has the ability to conduct experiments and research.
After taking the train to the spacious underground base, Xia Yu first switched to the identity of a car mechanic and removed the built-in battery pack of a jeep.
The battery pack is still quite difficult to remove. He spent a lot of effort to remove it. If it was a battery replacement system like NIO, it would definitely not be so troublesome. However, the Umbrella uses wireless supercharging technology, and the battery is the same as that of modern smartphones. Replacing a battery is definitely not as fast as that of old-fashioned mobile phones.
But isn't this battery a bit too light?
After removing the battery that could hold 400 kWh of electricity, Xia Yu felt like he could move it.
Holy crap, this energy density is incredibly high!
The energy density of the battery used by Tesla before was only 250Whkg, so with cooling and casing, 85 kWh would weigh less than a ton. After replacing the battery system, the energy density was only increased to 300Whkg, which is exactly the national requirement for the energy density of power battery cells for new energy vehicles in 2020.
Subsidies are linked to the energy density of the battery. In other words, the higher the battery energy density, the more subsidies the manufacturer can get. Then isn’t the country’s requirement a bit too low, only 300Whkg?
The energy density of the battery in front of him must be at least over 1000Whkg, right?
If the density is not so high, how can it hold 400 kWh of electricity?
Shit, he’s going to get rich!
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