gbshaun
Well-known member
I just passed 10,000 miles and am trying to figure out how my battery is doing.
However I’m getting conflicting information and would welcome any thoughts on it.
Today I did a 64 mile r/t, with a little A/C, & by the time I got home I was at 4.3 M/kWh on the dash (yes I had zero’d it before I left)
2 bars showing
No low-battery warning
It steadily dropped down to 11 miles on the range counter ( I think that’s consistent with the bars)
This suggests I could have done around 75 miles.
75/4.3 gives my useable capacity at just 17.4kW@h
However, of that 64 miles, 53 miles were on the freeway at 65mph.
65mph is supposed to result in just 3.6 M/kWh
I'm going to say the 10 miles I did NOT at 65mph would have been 3 less if i had stayed at 65.
So, i could have done 64+11-3 = 72 miles at 65mph, that’s 20.0 kWh usable capacity
Trip details.
0.5 mi from my home to the I-5 freeway.
26.5 miles from Encinitas to the Coronado bridge. Cruise control set at 65mph the entire way (traffic is light at 11:30AM). The A/C was running lightly the entire time.
At the start of the bridge (27 miles) I was at 4.1 M/kWh
No net elevation change. Tailwind? Unlikely, and would show up on the way home.
10 miles was driven up and over the bridge twice @55mph, and around Coronado, slowly.
Then the same return journey of :
26.5mi @65mph
0.5mi surface street
By the time I got home I was at 4.3 m/kwh,
For me the bottom line is I can drive 64 miles, 54 of them at 65mph, and still have at least 11 miles left even if I did continue at that speed (or probably an additional 20 on surface streets)
Appreciate anyone's thoughts on this
Shaun
However I’m getting conflicting information and would welcome any thoughts on it.
Today I did a 64 mile r/t, with a little A/C, & by the time I got home I was at 4.3 M/kWh on the dash (yes I had zero’d it before I left)
2 bars showing
No low-battery warning
It steadily dropped down to 11 miles on the range counter ( I think that’s consistent with the bars)
This suggests I could have done around 75 miles.
75/4.3 gives my useable capacity at just 17.4kW@h
However, of that 64 miles, 53 miles were on the freeway at 65mph.
65mph is supposed to result in just 3.6 M/kWh
I'm going to say the 10 miles I did NOT at 65mph would have been 3 less if i had stayed at 65.
So, i could have done 64+11-3 = 72 miles at 65mph, that’s 20.0 kWh usable capacity
Trip details.
0.5 mi from my home to the I-5 freeway.
26.5 miles from Encinitas to the Coronado bridge. Cruise control set at 65mph the entire way (traffic is light at 11:30AM). The A/C was running lightly the entire time.
At the start of the bridge (27 miles) I was at 4.1 M/kWh
No net elevation change. Tailwind? Unlikely, and would show up on the way home.
10 miles was driven up and over the bridge twice @55mph, and around Coronado, slowly.
Then the same return journey of :
26.5mi @65mph
0.5mi surface street
By the time I got home I was at 4.3 m/kwh,
For me the bottom line is I can drive 64 miles, 54 of them at 65mph, and still have at least 11 miles left even if I did continue at that speed (or probably an additional 20 on surface streets)
Appreciate anyone's thoughts on this
Shaun