DaveinOlyWA wrote:Why are 2015ers chiming in with VERY VERY bad advice? (Maybe a glance at the thread title is in order) Charging to 100% is bad for ALL Lithium chemistries. It has nothing to do with heat. Its all about voltage and the breakdown that occurs with sustaining the voltage on the edge for extended periods of time.
So you got a 2015 W/O LEAF Spy and the only thing you can claim is you haven't lost a bar AKA at least 15+% capacity? That is hardly "good" in any way. I have NEVER lost a bar over 4 different versions of the LEAF driving MUCH farther and guess what? Other than my much maligned 2016 S 30, the packs have exhibited unacceptably high degradation which is why I don't have them anymore. The 2018 is still being evaluated but has the likely potential of having 2015 like degradation and still be acceptable simply because it has a LOT TO LOSE. Your 2015's don't.
All battery chemistries, lead acid, nicad, li-ion, li-polymer, etc, benifit from the cells being properly balanced. If anything the hardest things on the batteries are not balancing and not charging frequently enough. Those of you going to extremes to try and save your batteries are reducing their lifespan and then use those bad datapoints to further your erroreous theory.
The only major difference is that li-ion doesn’t need a maintenance charge and prolonged storage at 100% state of charge is not ideal.
Your statement implies that not charging to 100% ever means the cells will never be balanced and that is wrong. Cells balance ALL the time no matter what SOC you are at so they will always be close. Top end balance does not guarantee greater health especially since high SOC DOES guarantee greater stress on the anode/cathode.
You have a VERY limited range LEAF so its a better idea to balance cells on top end simply because it can give you slightly more range but for most people, they simply don't live in a climate that makes it a good idea.
I have a MUCH more useful LEAF than you do. So I do not need to balance the top end for the extra miles. I drove 161 miles the other day and still had about 10 left when I got home and that was on a single charge. I can live with that....for a long time!
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased
. 29,413 miles. 2018 S40; 11,987 miles, 485 GIDs, 37.6 kwh 110.89 Ahr , SOH 96.00, Hx 115.22
My Blog; http://daveinolywa.blogspot.com
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