nlspace said:Sounds like a call for Dala the Great is in order--he is the master of replacing packs.
alozzy said:If it's just for your own use, why do you care about the SOH? Unless the BMS is artificially limiting your range, then the SOH is irrelevant. Eventually it will reflect the true capacity, until then just enjoy the extra range.
xafalcon said:alozzy said:If it's just for your own use, why do you care about the SOH? Unless the BMS is artificially limiting your range, then the SOH is irrelevant. Eventually it will reflect the true capacity, until then just enjoy the extra range.
The car does not appear to have gained any significant range. But going from 60% to 75% SoH should yield a 25% range increase. The "fuel gauge" depletes approximately as quickly as it used to. It makes no sense to me
I'm wondering if the lbc is limiting the amount of charge it accepts?? But cell voltage rises to the usual 4.12 volts so this does seem to fit??
xafalcon said:alozzy said:If it's just for your own use, why do you care about the SOH? Unless the BMS is artificially limiting your range, then the SOH is irrelevant. Eventually it will reflect the true capacity, until then just enjoy the extra range.
The car does not appear to have gained any significant range. But going from 60% to 75% SoH should yield a 25% range increase. The "fuel gauge" depletes approximately as quickly as it used to. It makes no sense to me
I'm wondering if the lbc is limiting the amount of charge it accepts?? But cell voltage rises to the usual 4.12 volts so this does seem to fit??
xafalcon said:alozzy said:If it's just for your own use, why do you care about the SOH? Unless the BMS is artificially limiting your range, then the SOH is irrelevant. Eventually it will reflect the true capacity, until then just enjoy the extra range.
The car does not appear to have gained any significant range. But going from 60% to 75% SoH should yield a 25% range increase. The "fuel gauge" depletes approximately as quickly as it used to. It makes no sense to me
I'm wondering if the lbc is limiting the amount of charge it accepts?? But cell voltage rises to the usual 4.12 volts so this does seem to fit??
[/quote]xafalcon said:Yes, it's the lbc that I need to re-learn so that I can just drive it to the full capacity without worry about running out as I drive it "into the red"
Original battery SoH was 60%, replacement modules came from a 75% SoH battery. 60% x 125% = 75%. Ie a 25% increase. SoH and Ahr are roughly measures of the same thing, they move in tandem as the battery cycles increase
My preference is not to reset the lbc, as that could cause the opposite problem - an overestimate of remaining battery capacity. Leaving me stranded on the side of the road
My preference is to speed up the natural "capacity learning" of the lbc
But if the later is not possible, then the former may be the only option
If you replaced "all" the cells with better ones, this does not mean the BMS will recognize this. But the car runs so that is significant, right? It is the BMS that controls what access you have to the pack. It is this you must get onboard with.
As far as your "gain 15% SOH equates to 25% increase in range" statement? Need a LOT more clarification on how you came about that math. The other thing to consider is SOH is not a statement of capacity, ahr is.
If I am not mistaken, the BMS reset is a relatively simple matter of jumping a few contacts but that is just a vague memory and I have no idea how to go about it. If the range is that important, I would suggest getting the bridge device and honoring the work of the people before you.
xafalcon said:Home evse at 2.4kw for 7 hours to 94%. Charge rate had not ramped down at this point. (7 x 2.4) / 94% = 17.87kwhr to full = agrees with in line meter
Additional info that may/may not be relevant
Battery charged to 100% (dashboard gauge) and 97.1% (leafspy)
Current flow into car (in line meter) 2410W
Current flow into car (leafspy) 1800W
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