JessEV
Member
Hi guys,
After 3 months on L1 only, I finally got around to installing my AV EVSE in the garage. Its sooo nice to charge faster.
Something strange though. It took 3 hours 15min to charge from 80% (where I had programmed it to stop earlier) to 100%. At 3.3kWh, that's over 10kWh. At 80% efficiency, that is still 8kWh. But 20% of a 24kWh battery is only 4.8kWh.
And I know it can take longer to charge the remaining few percent of a Li battery, more heat, etc... but it was still drawing 3.3kWh till the very end. You'd think if it had to trickle charge, it would reduce the kWh?
So is it that the charging process is only a ridiculously inefficient 50% at the last 20% or that Nissan is charging some reserver portion of the battery? There was earlier talk of a mysterious 10% held in reserve somewhere. I'm leaning a little more towards the latter... partially out of hope, partially that I think I noticed I'm getting a little more range on the car now when I charge it to full 100% with L2 in comparison to my earlier 100%'s with L1.
Thanks
Jess
After 3 months on L1 only, I finally got around to installing my AV EVSE in the garage. Its sooo nice to charge faster.
Something strange though. It took 3 hours 15min to charge from 80% (where I had programmed it to stop earlier) to 100%. At 3.3kWh, that's over 10kWh. At 80% efficiency, that is still 8kWh. But 20% of a 24kWh battery is only 4.8kWh.
And I know it can take longer to charge the remaining few percent of a Li battery, more heat, etc... but it was still drawing 3.3kWh till the very end. You'd think if it had to trickle charge, it would reduce the kWh?
So is it that the charging process is only a ridiculously inefficient 50% at the last 20% or that Nissan is charging some reserver portion of the battery? There was earlier talk of a mysterious 10% held in reserve somewhere. I'm leaning a little more towards the latter... partially out of hope, partially that I think I noticed I'm getting a little more range on the car now when I charge it to full 100% with L2 in comparison to my earlier 100%'s with L1.
Thanks
Jess