Can anyone help me understand or direct me to a "charging for dummies" web page? There are kWhs on the batteries, home charging is often shown in Amps and volts, SuperChargers are listed as 480-volts and we now have "Tiers" Some non-Tesla chargers are rated in KWs. So, how do any of these compare? I sort of know how long charging on a SC will take, but how can I figure the time on an "off network" charging station? Thanks!