[ref http://electric-vehicle-discussion-list.413529.n4.nabble.com/To-fully-charge-or-not-to-fully-charge-that-is-the-question-tp4683954.html >Mark sez: In my 2013 leaf manual it says to not fully charge each cycle and only to 80 percent is preferred but in 2014 it became ok to fully charge<
https://www.mail-archive.com/[email protected]/msg18324.html >Jamie sez: keep in mind that the entire pack capacity isn't actually used, so 100% is not the entire 24kWh. IIRC it uses about 21 kWh, which would be just under 90% when charged to "100%"< ] Mark's point is discussed on a Leaf forum: http://www.mynissanleaf.com/viewtopic.php?t=15526 and here is a link to a Leaf manual http://www.mynissanleaf.com/viewtopic.php?f=27&t=15269 I also found a news item I posted that showed not only pack SOC but thermal concerns: http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVLN-An-Early-Autumn-For-A-Texas-Leaf-Pack-tp4657003.html (Someone please check my math) 21kWh/24kWh= 0.875 or 87.5% So while the Leaf's Guessometer sez 100% SOC it really is 87.5% (a higher % SOC than I would want). After reading other's posts, it also seems besides having to contend with an inaccurate Guessometer, there is also some 'Opinionated-Programming' drivers have to contend with that can not be changed or adjusted without voiding the warranty. This keeps drivers locked into what the manufacturer thinks is the right-way to charge or use the pack (driver's suffer their arrogance). While most know Cellphone, tablet, and AA/AAA batteries are of usually a different design, packaging, and or chemistry than a plugin's pack, some things track/follow, see http://www.csmonitor.com/Technology/Tech/2014/0103/40-80-rule-New-tip-for-extending-battery-life So if the 40-80%SOC (state-of-charge) were to be adhered to by drivers that did not need that much range and wanted to baby/pamper/extend their pack's life, then those Leaf drivers would not want to discharge their pack lower than an actual 40% SOC, which would read as (100/87.5= 1.143-multiplier, *40%SOC= ) 45.7% SOC on the Leaf's Guessometer. And they would not want to charge their Leaf pack more than an actual 80% SOC, which would read as (100/87.5= 1.143-multiplier, *80%SOC= ) 91.4% SOC on the Leaf's Guessometer. The Leaf's display or an app would inform the driver when to plug their EV in. But how does the driver get the EV or the EVSE to stop the charge at the ~91% SOC point? Of all the EVSE news items I have read, I remember a long time ago there was a (home?) EVSE that allowed the driver to set at what % of charge it would stop, or allow a specific amount of time the plugin would charge. These features would also lend themselves to take advantage of utility's time-of-use lower electricity rates (only charge at specific times, and save a bunch of money, etc.). Well, I just did a search for that and came up empty on that finding a safety certified EVSE that does that. I did find that emotorwerks has an EVSE app, but stopped there as they have yet to get their EVSE safety certified which insurers and city-governments would be satisfied-with. The only other way I could think of as a work-around, would be to drop into the mode of thinking that our EV predecessors had to use (they had no smart-device choices like we have today). It was the "Ye-Ol' " method of using an inexpensive AC power timer set to a specific amount of time (turn on at a set time for a number of hours, then turn off each day). With packs now increasing in capacity, the old level-1 electric timer: https://www.zoro.com/tork-timer-indoor-lamp-and-appliance-120v-sa011/i/G4206745/ may not suit/fit everyone's charging needs. (here is a L1 12A 120VAC 1.4kW EVSE example https://store.clippercreek.com/level1/pcs-15-portable-ev-charging-station ) So, I also found a 240VAC 20A electric timer https://www.zoro.com/intermatic-timer-mechanical-240v-20a-plug-in-hb114/i/G6878742/?gclid=CI3Ps4yRws8CFYwmhgodjdALPA&gclsrc=aw.ds which should allow use of up to a 4.8kW L2 EVSE. (here is a L2 20A 240VAC 4.8kW EVSE example https://store.clippercreek.com/lcs-25-lcs-25p-20-amp-ev-charging-station?gclid=COHzs-qrws8CFU48gQodXtMBOg and here is a L2 16A 240VAC 3.8kW EVSE example https://store.clippercreek.com/lcs-20-lcs-20p-16-amp-level-2-ev-charging-station?gclid=CJnByv-pws8CFciDfgodWpgILA ) BTW, any EV-ignorant/EV-newbies reading this, should not get into a panic that Leaf EVs have any severe charging issues. It is just that driver would like the best (or most) for the Electric-love-of-their-life. Said noobs are likely already familiar with ice, so perhaps an analogy would be to suggest saving ice-weight by not driving around with a full fuel tank, thus the ice would get better mpg, put less work on the engine (making last longer), etc. By knowing what a drivers needs are, their vehicle could be optimized to better suit those needs. That is what these Leaf EV pack SOC discussions are seeking. For EVLN EV-newswire posts use: http://evdl.org/evln/ {brucedp.0catch.com} ... https://en.wikipedia.org/wiki/To_be,_or_not_to_be William Shakespeare - To be, or not to be (from Hamlet 3/1) To be, or not to be: that is the question: Whether 'tis nobler in the mind to suffer The slings and arrows of outrageous fortune, Or to take arms against a sea of troubles, And by opposing end them? -- View this message in context: http://electric-vehicle-discussion-list.413529.n4.nabble.com/To-fully-charge-or-not-to-fully-charge-that-is-the-question-tp4683954p4683968.html Sent from the Electric Vehicle Discussion List mailing list archive at Nabble.com. _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
