Originally posted by nebster
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For the rest of you who have at least a 5th grade education, take note. Tesla vehicle mileage is 300 to 400 miles. If the batteries were discharged at 1C would require you to go 300 to 400 mph. 1C is the 1-hour charge/discharge rate. Now Jethro you made it to 6th grade and should smell a idiot or liar. Those mileage are calculated at 50 to 60 mph. OK Jethro how many hours does it take to 300 miles at 50 mph?
Did you come up with 6 hours? Well Jethro that is C/6 fractional C-Rate. Most off-grid systems can and will discharge a lot faster than that up to 1C in some applications.
Jethro's, for the charge side of Tesla batteries depends on what class of charger you have. Level 3 is the fastest and you will never use one at your house unless you have $100,000 for one and even then you are talking a C/4 charge rate or about the upper limit of off-grid solar. Level 1 is your common house 120 volt 20 amp circuit and takes 12 to 17 hours aka C/12 to C/17 which is much SLOWER than any off-grid solar. The most common Charger in a house is Level 2 and is the exact same circuit your electric dryers uses of 240 volts @ 30 amps produces a C/8 charge which is where most solar systems fall into.
So if someone tries to tell you EV batteries do not need the same protection because Solar Systems run at fractional C=Rate, tar and feather that Snake Oil salesman and run him out of town.
-- question removed -- Moderator.
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