91040 said:
From my trip today. Time to 100% Charge on 120V in relation to Gids:
2 hours- 253 Gids
2.5 hours- 248
3 hours- 240
3.5 hours- 234
4 hours- 228
4.5 hours- 221. Return trip- 224
5 hours- 216. Return trip- 219
5.5 hours- 210. Return trip- 211
6 hours- 203. Return trip-205
6.5 hours- 197. Return trip- 198
7 hours- 191
7.5 hours- 186. Return trip-185
8 hours- 179
8.5 hours- 172. Return trip- 175
9 hours- 168. Return trip- 169
9.5 hours- 160. Return trip- 161
10 hours- 155
Not sure if this was at 10.5, 11 or 11.5 hours- 150
Next was definitely:
12 hours- 140
13 hours- 122
14 hours- 109
15 hours- 99
16 hours- 87
17 hours- 79
18 hours- 65
Those data are beautifully linear. In fact R = -0.997!
You get Gids using the following formula:
Gids = hours (to 100% charge at 120V) x -11.65 + 273.2
The linear fit thus estimates maximum Gids to be 273 and charge time from empty to be 23.4 hours.
P.S. I took all data points, except 10.5-11.5. I also assumed that on the return trip the 7 and 8 hour data points were identical to those during the first trip.