Hi all unhappy e8035 owners, I have moved our cause here Shimano BT-E8035 Issue , please provide you stats and if havng sufficient numbers we can get in touch with Shimano. Anybody having a warranty lawyer who would be willing to helps us with this?
From what I have read and gathered it looks quite clear that BT-E8035 is poorly designed. You can try hard and do the best you can (store it well, charge it well, drain it reasonably), yet you will end up having the worst bike battery that is degrading fast and will steal your km range. Most...
This ECO mode thing is basically reading of the battery capacity. So, if you have a new bike, the range it shows is 100 km. If you have an old bike, like I do, it shows you prior to your ride 76 km. It only tells you the current capacity of the battery. Which basically means that if you do not...
Very sad though, how about we set up a thread for E8035, provide sufficient stats and talk to Shimano? I love my bike and I am certain that even if Shimano warranties the battery, I will very soon face the same issue: fast degrading and loss of range. It has nothing to do with proper care. This...
Yes, 8035 spoils it. Guika and all 8035 owners, we should probably have a separate thread. There is definately something wrong with this type of battery. Bought an old Ghost last week with an external battery, 2 yrs old or so, 94% and 42 cycles.
I have just filed a warranty claim 77% (92 cycles), if I get a new one I can observe this daily. I bike daily 30 to 60 km. I can follow all the best practices as shown in this thread.
My conclusion here is still the same. I belive the battery cells are ok but Shimano BMS degrades the battery cells down. As longs as your retailer is willing to replace it, and another one, and another one, and another one....and you like the bike you have, you are fine and you should keep doing...
Not everyone gets to see the same degradation. Form what I have read so far, the external ones are far better, the worst so far, remains to be the e8035. I agree, we need a tech to provide a fair analysis of the failing e8035. Any tech in this thread who is willing to sacrifice some time and...
One of the retailers that I have questioned for the root cause suggested that the issue with the batteries was not the cells themselves but the BMS. They had a bike where they had a similar issue and the customer did not mind losing the warranty. They bypassed or altered the BMS (pardon my non...
Have you checked the test earlier in this thread? It is clear that it is not a software issue. I have got the ST unlocker and the app does not make up the value, it READS the value. The creator of the app has no control over the readings. It is easier to leave this open for Shimano and act in...
Yeah, you are right, but you do not always buy a bike just because it's got the best battery or do you? I bought mine because it's constantly been a great ride....never expected that they've got faulty batteries and that Shimano would treat me like a p.....o.....s when I tell them they've got a...
You are definitely right that e8035 are defective and poor design. I have just been told that Shimano will agree to warranty as soon as my battery health is 79%. I, however, doubt that they will do this over and over again. This thread clearly shows that e8035 is a defective design. If you read...
You are definately right, it would be nice to nail that issue down. It may as well be purely related to certain models of batteries. Mine has got no letters either: BT-E8035 and its health is 80% only one year old.
Just finished the comparison of the two 504 wh Shimano batteries, one being external, mine internal BT-E8035. As I reached the end of the readings, I learnt that the silly Biker #2 had changed the parameters of assistance but forgot to also save them! Nonetheless, it is now very clear that the...