Okay so you're using some kind of app that measures the total charge that the battery carries after being fully charged by an oem Shimano charger is that correct?
Correct.
This is the APP:
Okay so you're using some kind of app that measures the total charge that the battery carries after being fully charged by an oem Shimano charger is that correct?
Plus if you're one of those fanatics that rides all the time and boost then whatever is going on with your battery you shouldn't be doing that they didn't design these motors to run boost all the time the battery draw is way too much and they get too hot and they degrade even faster so if you are such a devotay of super you know hard hitting it on boost all the time well I just think that just too damn bad if your battery has a shorter lifespan. It says if you went and bought a Corvette racing on the track for 5,000 miles blew the engine the bits and then came back to the dealer demanding a new engine I think they should throw you out of the dealership with you do that one
Whether this is the case or not, Shimano have stated their battery will have a certain performance (80% of original capacity at 500 cycles). Using their own diagnostic tool, the readout from the battery BMS, it shows that their product is not meeting this.How much is lost ? So from what I've read previously to this post is that one of a stack of 10 batteries and there are five stacks has decreased performance and is putting out a voltage less than the 3.6 think that's the number that is within specs. So that one bad cell is responsible for the degradation of 20% of the battery life. There were at least two American companies in soquel that can take these batteries and test each cell and replace the one bad cell put the whole thing back together again for way less than the cost of a new battery. I was going to do that with my original battery that seems to have the condition I just described. But at this point I am holding off because of all the distractions that have occurred because of the pandemic. I don't really think that this is a Shimano quality control issue it's just the nature of these cells that are used to create one gigantic battery and that the actual individual cells are very high quality ones. When you see 60% that means that two of the five columns of 10 or not functioning correctly and that's when I would send my battery in to the aftermarket repair place and either get all new cells put in or identify the bad cells and just replace those. I honestly don't think the technology of lithium ion cells is so advanced that you would expect 500 charge and reach discharge cycles but maybe they said that once and I can definitely understand why they removed all documentation because in the real world it ain't happening these batteries have flaws that become more manifest with time I mean come on how many years do you keep your cell phone for.
I dont think that is a fair comparison. The equivalent of what you have suggested on a car would be to not use the 5th and 6th gear.Plus if you're one of those fanatics that rides all the time and boost then whatever is going on with your battery you shouldn't be doing that they didn't design these motors to run boost all the time the battery draw is way too much and they get too hot and they degrade even faster so if you are such a devotay of super you know hard hitting it on boost all the time well I just think that just too damn bad if your battery has a shorter lifespan. It says if you went and bought a Corvette racing on the track for 5,000 miles blew the engine the bits and then came back to the dealer demanding a new engine I think they should throw you out of the dealership with you do that one
Whether this is the case or not, Shimano have stated their battery will have a certain performance (80% of original capacity at 500 cycles). Using their own diagnostic tool, the readout from the battery BMS, it shows that their product is not meeting this.
They should therefore honour the warranty.
There are lots of ways of measuring the health of a battery. Getting the customer to compare their rides is not one of them!
Well I was riding with my boost obsessed buddy on a super hot NorCal day and my bike shot out an error code and turned off . It all got too hot. Back in trail it was fine. Yes extremely unscientific!!I dont think that is a fair comparison. The equivalent of what you have suggested on a car would be to not use the 5th and 6th gear.
Boost will not have a significant current draw relative to the battery capacity. It should be easy to design a battery which copes with these demands.
Indeed, apologies, I was agreeing with you.I do not have SM-PCE002, so I can not use etube and I use STUNLOCKER, which reads the same BMS register. After 5 months, 10cycles and 800km my second battery shows health of 90%, so I will be using it as my main battery and waiting if it reaches 80% health during the 2 year warranty period.
I keep the battery data and GPS tracklog of my rides and I can do comparisons but I am not using it to calculate battery health just to confirm that decreasing health causes decreasing mileage and altitude. I explained this to another forum member that was questioning the mileage decrease with the health decrease.
I dont think that is a fair comparison. The equivalent of what you have suggested on a car would be to not use the 5th and 6th gear.
Boost will not have a significant current draw relative to the battery capacity. It should be easy to design a battery which copes with these demands.
My bike went into Lbs had reports done from SME2 attached to a pc there latest E-TUBE version but it doesn’t show the battery health anymore so I did it on my computer with the older version which shows 80%, madison didn’t get back to LBS for weeks even after countless emails I used to get 10-12 miles on fairly flat rides depending on mud or wind now getting 5-7 in eco on same rides wife’s shimano e8000 bike is the same age done same rides is at 99% after same cycles, thanks I will send this to my LBSThis is Page 19 of Shimano Steps Service Manual that states 80% battery health after 500 charge cycles, show it to your LBS and have Shimano honour their statement in their own documentation.
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My bike went into Lbs had reports done from SME2 attached to a pc there latest E-TUBE version but it doesn’t show the battery health anymore so I did it on my computer with the older version which shows 80%, madison didn’t get back to LBS for weeks even after countless emails I used to get 10-12 miles on fairly flat rides depending on mud or wind now getting 5-7 in eco on same rides wife’s shimano e8000 bike is the same age done same rides is at 99% after same cycles, thanks I will send this to my LBS
I agreeShimano etube for windows using adapter SM-PCE02 is the Software tool used by LBS and Shimano Service Centers to diagnose battery issues. And you say that in the latest version Shimano has removed the BATTERY HEALTH diagnose capability so it is not possible to verify if the battery is defective or not.
I do not know the reason, but for me it looks like a plot of a big company trying to reduce financial exposure for warranty claims of defective batteries.
That is pretty poor indeed if that is the case.My bike went into Lbs had reports done from SME2 attached to a pc there latest E-TUBE version but it doesn’t show the battery health anymore so I did it on my computer with the older version which shows 80%, madison didn’t get back to LBS for weeks even after countless emails I used to get 10-12 miles on fairly flat rides depending on mud or wind now getting 5-7 in eco on same rides wife’s shimano e8000 bike is the same age done same rides is at 99% after same cycles, thanks I will send this to my LBS
My external 504wh battery dropped to 76% capacity, and Shimano US warranty it, no questions. I don't remember how many cylces, it was less than 1 year, about 3500 miles. The lbs took my old battery to be "disposed properly".
I ride mainly in trail, very few eco and boost.
but we are not supposed to do thatDecreasing battery health means decreasing miles and altitude.
This battery health number is calculated by Shimano software inside the battery and this number is stored in battery internal memory, and can be read by etube and STUNLOCKER.
I keep track of of all my routes in an Excel file:
Battery health
Battery charge
GPS track
Mileage
Altitude gain
And I have verified that my mileage has decreased after battery health number decreased.
how did you justify the % ? by a screenshot ?My external 504wh battery dropped to 76% capacity, and Shimano US warranty it, no questions. I don't remember how many cylces, it was less than 1 year, about 3500 miles. The lbs took my old battery to be "disposed properly".
I ride mainly in trail, very few eco and boost.
adsuming etube removed the battery diagnosis in newer version , which android app to use to get the battery health ? ( for a warranty claim )
I think for 99% of cases, the problems seem to occur on the internal Shimano batteries, not the external ones - so you should be ok.Just shy of 1700 miles on my E8000 and battery life is showing 96% on ST Unlocker app.
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