jgc wrote:I've looked around this board, and elsewhere, but can't seem to find an answer to what I hope is a simple question.
My LEAF is 40kWh ... but I don't know how much electricity it takes to charge it up to 40kWh. Is a bit more (say 45kWh) or a lot more (60kWh) or even more? I guess this will be different between different PVSE systems in different countries; ideally I'd want to know it for the UK for typical home charging pods (6kW in my case).
I'm interested to know this so I can more precisely understand what my 'fuel' costs are.
Charging efficiency is based on the speed of the charge. Speaking only on charge to the pack, QC's run 95-96%.
L2 depends on the speed because of overhead used by BMS and cooling system (only cools charger BTW) so the faster the charge, the higher the efficiency simply because less of the power from the wall is used to run the BMS (100% of the time) fans (very rarely) or water circulation pump (variable speed but runs prob 80-90% of the time)
At 6.6 KW, you are looking at prob 91-92%. I am running at 5.8 KW due to limitations of my 50 year old breaker panel and getting roughly 88-89%. The bottom end is level 1 or 120 volts @ 12 amps which runs 75% efficient (yeah one kwh lost for every 3 stored.)
NOTE; All numbers above determined by metered power output from the wall and the miles/kwh reading from the dash. QC figures based on LEAF Spy power meter verses "billed" kwh from public charging provider.
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased
. 29,413 miles. 2018 S40; 15,000 miles, 478 GIDs, 37.0 kwh 109.81 Ahr , SOH 94.61, Hx 120.15
My Blog; http://daveinolywa.blogspot.com
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