"MemberJoin: Apr 2018Posts: 76Osceola Arkansas about 1 hour ago · #1 First full charge 3% to 100% I pulled a crazy stunt the other day, I drove to the nearest ccs fast charger (75 miles from my home) after starting out with an 88% charge (hill top reserve) and commuting to work… I checked the charging station to make sure it was fully operational and then drove around at high speeds to deplete the battery. Even being 100% confident that I could make it back to the charging station, when the last bar started franticly blinking it put range anxiety into overdrive When I plugged into the charger I had 3% SOC. Charging from 3% to 80% was the cheap part of the charge and the other half (the expensive half) was charging all the way up to 100% in order to get a data log from near zero to full charge on a 350 KW CCS station. That first 46.2 KW cost me the same amount as the 12 KW I gained in the second half of the charge. Here are some mile stones: 13% (gain of 10%, 24 miles of EPA range) in 8 minutes. 23% (gain of 20%, 48 miles of EPA range) in 15 minutes. 33% (gain of 30%, 71 miles of EPA range) in 23 minutes. 43% (gain of 40%, 95 miles of EPA range) in 30 minutes. 1st step down 55 KW to 40 KW at 49% at 34 min 53% (gain of 50%, 119 miles of EPA range) in 38 minutes. 63% (gain of 60%, 143 miles of EPA range) in 47 minutes. 2nd step down 40 KW to 25 KW at 66% at 50 min 73% (gain of 70%, 167 miles of EPA range) in 61 minutes. 3rd step down 25KW to 18 KW at 81% at 74 min 83% (gain of 80%, 190 miles of EPA range) in 77 minutes. 4th step down 18 KW to 11 KW 91% at 95 min 93% (gain of 90%, 214 miles of EPA range) in 102 minutes. 95% (gain of 92%, 219 miles of EPA range) start of final ramp down 112 min. 98% (gain of 95%, 226 miles of EPA range) in 121 minutes." Total cost: 63%, $1 + 47*.30 = $15.10 73%, $1 + 61*.30= $19.30 98%, $1 + 121*.30 = $37.30 Source: https://www.chevybolt.org/forum/90-2017-chevy-bolt-ev-range-mpge-discussion/6810-how-many-m-kwh-you-getting.html#/topics/29689
Thanks! I've zipped up the OpenSource spreadsheet. My approach on charging economics is to look at the charging rate versus local electrical rate. For example, it costs $0.10/kWh or $0.0017/kWm. At $0.30/min, you are at 55 kW, paying for $0.092/kWm or roughly three times the local electrical rate per hour (note change of time scale.) But we do this to avoid having a two-car hybrid: (1) EV, and (2) gasser. Now this is a problem: There are two CCS standards, V1.0 limited to 80kW, and V2.0 limited to 350kW. But your car electronics and/or control laws limit it to 55kW. No need to plug-in to a 350kW station if a lower rate charger is available. What is the L2 charger rate for your car? It may make economic sense to unplug from the fast DC charger and top off with a cheaper, J1772 plug. Bob Wilson
