Guru
Joined: 15/07/2006
Location: AustraliaPosts: 640
| Posted: 10:27am 11 Aug 2020 |
The cost at Mackay public charge outlet has started. I have been charged 20 cents per kWhr. That's slightly better than normal house rate of 22 cents per kWhr.
We are past another year (now 7 years) on the 260Ah battery pack. Remember April 2019, I removed 4 cells to bring it back to 48 cells. Those 4 cells out lost me a few kWhr.
I generally drive around 100km and generally takes me around 18-20kWhr, depending on conditions. Today was exceptionally good. I had a tail wind, then on return the wind had died down. 16.5kWhr to do 99.6km. That's 6.03km/kWhr. Normally its 4.5-5km/kWhr. This is driving mostly highway speeds.It is better at slower speeds, but why should I drive slower when I don't have to.
Photo taken at 16.3kWhr, I put the charger on and remembered I need to update the past year. So the charger got 0.2kWhr off. It was 16.5kWhr.
VDO speedo reading is 106811km now minus last year recording of 88599km (in Sept) makes 18212km for the year. Not as many km's this year, as recorded late last year and no EV shows this year.
18212km + 137231km = 155443km over 7 years
Cost of this pack was $1.40/ah x 260ah x 52 cells = $18928
155443km / $18928 = $0.082 per km. (8.2 cents per km)
The old speedo is still ticking over. The speedo reading now is 592840km and 260Ah batteries fitted 437956km. That makes it 154884km. This speedo became unreliable, hence the reason for fitting the VDO speedo.
From what I see, I think my range now (48 cells) will be around 120km. I should be able to see another year before I have to change them. But of course if someone wants a cheaper pack to play with, I am happy to listen to the offers. (then I would change the pack sooner)
The first lithium pack was down to 14 cents/ km, 5 years, when I took them out and put them on the house solar. They did another 7 years on the solar. Could have done more without grid tie inverters emptying them every day. That is, if they were stand-alone only, they would be good for a few more years. We changed the house solar earlier this year. http://www.thebackshed.com/forum/ViewTopic.php?TID=6010&P=1
Edited 2020-08-15 16:03 by Trev