SHIMANO BATTERY BT-E8010, REPAIR - CELLS REPLACE PROCESS

Replacement of cells in Shimano system e-bike battery with original parameters 10S4P 36V 14Ah 504Wh.
The battery already had a significantly reduced capacity, so it was necessary to replace the old cells with new ones.
Parameters after replacement of battery cells 10S4P 36V 14Ah 504Wh.
504 Wh is the current maximum achievable capacity with 3500mAH cells.
Bussbars are custom made with laser technology.
New cells used: Molicel M3A 3500mAh
Battery marking: Shimano Steps BT-E8010 504Wh
Battery EAN: 4550170762551
Motor: Shimano
Alternative: BTE8010
Disclaimer: this is not the manual. The services performed in this video are executed by a trained technician.
Timeline:
00:00 - Intro
01:00 - Battery open and disassembly
07:30 - Busbars removal
8:30 - Cells replacement
12:00 - Cells welding
14:30 - Instalation of the BMS
15:30 - Charging test
21:06 - Finishing steps
IG: /mcells_batteries
FB: /mcellsbatteries1
web: mcells.sk
contact: [e-mail]
#18650 #greencell #lgchem #repair #ebike #battery #batterysaver #battery #liion #shimano #ebike

[@davidsoares2676]

I had a very unpleasant experience. A client of mine, brought the functional battery and I in my tests I endeavored the battery! My tests consisted of checking the full capacity of the pack before balanced, which in the case measured 10.6Ah and how much capacity would have after the active balance. In the case measured 12.5Ah after the test. The stress range, from 2.5 to 4.2V by cell.
Never do this with BMS on, to do this test I should have removed BMS like Mcellbatteris said!
Anyway ... living and learning.
Congratulations on your video, very good!

[@Alex-np2fb]

Hi. Is there a way to "unblock" a blocked BMS on Shimano Steps, or will replacing the dead cells with new ones reactivate the BMS? I'm interested in repairing the battery for a Shimano Steps BT-E6010. Thanks!

[@kenwilkinson7836]

You need security Torx heads to remove the screws.
To release the two little covers for the screws, a good idea to lift up with a chisel from below. I cant see any way to remove these without some damage.

[@mcells_batteries]

Hi, you can use scalpel or some blade. It can make some little damage but it doesn't matter.

[@evenl8054]

Is it possible to buy the laser cut nickel sheets somewhere? Or are you planning to sell it?

[@mcells_batteries]

Yes, we will sell them. But for now, if you are interested please contact us on email : [e-mail]

[@oklmi]

hello, I knew that these bms block if you take off the cells! how to do it right ? Thanks

[@mcells_batteries]

Hi, we repaired several of these batteries and there wasn't any problem. BMS can be blocked when some of cells has lower voltage for longer time.

[@JTZzzs]

@@mcells_batteries Hi. Is there a way to "unblock" blocked MBS or will unhooking it and installing new batteries do this?