Pipcecil
Well-known member
I just had my battery replaced from a 4 bar loser. One of the issues I had with my leaf was the software update for the battery gauge seemed to tank my braking regen. But now, I don't think its the true culprit.
My old battery starting to have breaking regen issues around the time of the update, but it really was a few months after - basically when I lost my 3rd bar. At the end of its life, during a nice warm summer, I would start off at 100% charge with no regen available (normal), and start adding bubbles. I would only have two available for the first half of the range - meaning the first 6 fuel bars I would only have 2 bubbles of regen available. After the pack reach 50-60% remaining, I would get the third. The last bar never became available until below LBW (closer to VLBW). New battery is completely different. Regen starts off slow but by the time the pack reaches ~80% (two fuel bars down), I get all 4 bubbles and max regen.
This tells me the internal resistance that builds up in the battery is preventing regen braking, further reducing range. The program update may have changed how it responds to an more degraded battery, but it is definitely related to the internal resistance. Now here is the interesting part. Nissan, until recently never warrantied the pack against capacity, but only to performance. We all assumed this was directly related to power output, meaning a degraded battery couldn't loose any power acceleration bubbles (like when it gets to turtle), which it probably never would. BUT did we ever consider regen breaking as "performance"? After getting this new pack, I can tell a STARK difference in my ability to regen and cannot believe my older battery was preventing so much regen from happening (my carwing score for regen went from a 4 to a 1 with the older battery).
I just can't believe how much more regen I can get with a new battery
My old battery starting to have breaking regen issues around the time of the update, but it really was a few months after - basically when I lost my 3rd bar. At the end of its life, during a nice warm summer, I would start off at 100% charge with no regen available (normal), and start adding bubbles. I would only have two available for the first half of the range - meaning the first 6 fuel bars I would only have 2 bubbles of regen available. After the pack reach 50-60% remaining, I would get the third. The last bar never became available until below LBW (closer to VLBW). New battery is completely different. Regen starts off slow but by the time the pack reaches ~80% (two fuel bars down), I get all 4 bubbles and max regen.
This tells me the internal resistance that builds up in the battery is preventing regen braking, further reducing range. The program update may have changed how it responds to an more degraded battery, but it is definitely related to the internal resistance. Now here is the interesting part. Nissan, until recently never warrantied the pack against capacity, but only to performance. We all assumed this was directly related to power output, meaning a degraded battery couldn't loose any power acceleration bubbles (like when it gets to turtle), which it probably never would. BUT did we ever consider regen breaking as "performance"? After getting this new pack, I can tell a STARK difference in my ability to regen and cannot believe my older battery was preventing so much regen from happening (my carwing score for regen went from a 4 to a 1 with the older battery).
I just can't believe how much more regen I can get with a new battery