Possibly. Perhaps probably. But not necessarily. It may be the result of how the battery responds to cold weather (pack resistance, capacity, etc.). Also, I wouldn't touch a hack like this unless I was sure I would never be eligible for pack replacement. Circumventing Nissan's efforts to prolong battery life will (understandably) void any claim.EVerlasting wrote:<snip>The only way LEAF knows its winter is by some external temperature sensor. <snip>
Why does Nissan want to prolong battery pack life of only 2011-2012 models by reducing their regen in cold temps and at the same time increase regen in 2013+ models with the "B" mode in any temps even though all LEAFs from 2011-2014 models have the same battery pack chemistry. It doesn't make sense. There has been some talk in the software update thread that the update may have a glitch (bug) of reducing temp based regen too much in 2011-2012 by mistake. 2013+ models never needed this software update so they are doing just fine regen-wise in cold weather.TickTock wrote:Circumventing Nissan's efforts to prolong battery life will (understandably) void any claim.EVerlasting wrote:<snip>The only way LEAF knows its winter is by some external temperature sensor. <snip>
2013 & 2014 did have some modest change compared to 2011 & 2012. Some claim it may have been significant, but bit early to be sure.EVerlasting wrote:Why does Nissan want to prolong battery pack life of only 2011-2012 models by reducing their regen in cold temps and at the same time increase regen in 2013+ models with the "B" mode in any temps even though all LEAFs from 2011-2014 models have the same battery pack chemistry. It doesn't make sense. There has been some talk in the software update thread that the update may have a glitch (bug) of reducing temp based regen too much in 2011-2012 by mistake. 2013+ models never needed this software update so they are doing just fine regen-wise in cold weather.
What we know is the car slowly decreases available regen while drawing power from the battery be it to maintain higher speed, accelerate or run the heater (I need to check the heater bit - I don't think it has been proven) and slowly increases regen when regenerating. Pure speculation, but my theory is they were trying to discourage over cycling (charging and discharging over and over) in vehicles driven by tailgaters. If you do a lot of accelerating and braking pushing charge in and out of the battery each cycle adds wear on the battery so they slowly give you more if you request it steadily. What we also know is the available regen range is more than twice that displayed on the dash bubbles (I've seen 9 bubbles worth when only 4 bubbles show on the dash). So when you think you have "full regen" (all regen bubbles) it really just means you have >45% possible regen. This has the effect of magnifying the perceived impact of any reduced regen from the sw udpate (you may have been moving between 90% and 45% before and never seen a bubble drop but now it varies between 90% and 33% which will cause you to see 2 bubbles drop). So a 12% reduction (or 27% depending on how you look at it) looks like a 50% reduction.EVerlasting wrote:Why does Nissan want to prolong battery pack life of only 2011-2012 models by reducing their regen in cold temps and at the same time increase regen in 2013+ models with the "B" mode in any temps even though all LEAFs from 2011-2014 models have the same battery pack chemistry. It doesn't make sense. There has been some talk in the software update thread that the update may have a glitch (bug) of reducing temp based regen too much in 2011-2012 by mistake. 2013+ models never needed this software update so they are doing just fine regen-wise in cold weather.TickTock wrote:Circumventing Nissan's efforts to prolong battery life will (understandably) void any claim.EVerlasting wrote:<snip>The only way LEAF knows its winter is by some external temperature sensor. <snip>