Launch HN: Saratoga Energy (YC W19), Better Carbon Nanotubes from Carbon Dioxide

Re:Launch HN: Saratoga Energy (YC W19), Better Carbon Nanotu... by mbell on Monday March 04, 2019 @04:38PM (#19305826)

My math may be a bit off but if you have a 230Ah battery (Telsa Model 3) and you want to charge it in 10 minutes you need something on the order of 1380A charging current even ignoring losses. At 350V, the voltage of the Tesla Model 3 battery pack, this is 483,000 Watts! There are major problems with this type of charging happening at scale at every level of the energy grid.

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Re:Launch HN: Saratoga Energy (YC W19), Better Carbon Nanotu... by mgoetzke on Tuesday March 05, 2019 @01:11AM (#19308461)

Most systems like this would be changed to go battery to battery with larger stationary storage on-site being essentially refilled from the net at the average use rate of all cars combined per day. This would delay this problem a little

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Re:Launch HN: Saratoga Energy (YC W19), Better Carbon Nanotu... by SaratogaEnergy on Monday March 04, 2019 @04:45PM (#19305897)

This is for sure a tough challenge. I think supercharging stations charge at 400V and 250A for the model S. Porsche and others also have 800V chargers coming online.

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Re:Launch HN: Saratoga Energy (YC W19), Better Carbon Nanotu... by Tade0 on Monday March 04, 2019 @05:18PM (#19306164)

To be honest I wouldn't mind having just half of that power.

Every quarter I do a 1500km trip, which is split into two legs - the longer being around 1140km.

Assuming I started with enough charge to drive 300km, charging wouldn't affect my time, because I am human and need to go to the bathroom, eat etc.

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