So we're currently charging at .4C, which is safe; it's just slow.
Let's say we supercharge at 2C to 80%, then run the battery down to 20%. Not as safe as .4C, but as long as we cut the 2C charge off at 80% (as soon as it hits 4.2v/cell), we should be okay.
So run the battery down to 3.5KW, then charge it back up to 14.5KW at 2C.
It takes about 1.5 hours to hit 80% at .4C, and it should take about 20 minutes at 2C.
80% charge should get us 8 laps which will take about 20 minutes to complete, so at 2C we charge as fast as we use.
Now we just need two battery packs, but we need 50KW of power and a CA DC power supply that can put out over 300A at 150VDC. Even if we get the generator, the DC power supply is a tall order. I know where to get one, but it would be more expensive than everything else combined (including the RV, trailer, and everything else in our paddock).
Charging at 1C is similar, but we need more batteries because we only charge half as fast as we use.
I think that the final answer is going to be something like running our current chargers and having two sets, if of course running one full set at .4C all weekend actually works. Last time I tried it I blew most of them up.
How many laps we get will depend on the number of batteries. My plan for Spring CMP with one set of chargers and three sets of batteries is something like this:
That should get us 140-150 laps for the weekend.
By Fall CMP I want to have two sets of chargers and four sets of batteries, so it will go something like this:
Now we're getting up around 250 laps, which is getting pretty good.
If I do some suspension work , new sticky tires, etc to let us carry more momentum, add another set of batteries and chargers, then it should start looking like this next season:
Now we're turning over 300 laps and racing for a Class C trophy.
Everybody grab your brooms, it's shenanigans!