Kabbage
100 W
Hi - I have just finished building a new battery using 16S Headway 38120 flat-tab cells for my first build commuter https://endless-sphere.com/forums/viewtopic.php?f=6&t=39940.
Bought the Cells from EVAssemble (http://www.evassemble.com/index.php?main_page=product_info&cPath=2&products_id=19), along with one of their bleeding balancing BMS (http://www.evassemble.com/index.php?main_page=product_info&cPath=6&products_id=211).
On my first test ride - I got about 15 minutes in and lost power - I suspected the BMS shut things down.
So I charged up and tried again - went fine for about 15 minutes and then stopped again.
Checked the individual cell voltages at the BMS connections. Hot off the charger, they were all 3.36V - Except Cell 11 which was 3.28V. Oh-ohh.
After the ride, when it had shut down, they were all 3.31V, except cell 11 which was 2.48V (I guess it's lagging under load to the 2.1V discharge protection voltage of the BMS??)
So, now what do I do? - do I have any choice but to pull the battery apart and replace cell 11 with a new one? Is there any way to resurrect it? What a palarver!
Any help appreciated!
Cheers = Kabbage
Bought the Cells from EVAssemble (http://www.evassemble.com/index.php?main_page=product_info&cPath=2&products_id=19), along with one of their bleeding balancing BMS (http://www.evassemble.com/index.php?main_page=product_info&cPath=6&products_id=211).
On my first test ride - I got about 15 minutes in and lost power - I suspected the BMS shut things down.
So I charged up and tried again - went fine for about 15 minutes and then stopped again.
Checked the individual cell voltages at the BMS connections. Hot off the charger, they were all 3.36V - Except Cell 11 which was 3.28V. Oh-ohh.
After the ride, when it had shut down, they were all 3.31V, except cell 11 which was 2.48V (I guess it's lagging under load to the 2.1V discharge protection voltage of the BMS??)
So, now what do I do? - do I have any choice but to pull the battery apart and replace cell 11 with a new one? Is there any way to resurrect it? What a palarver!
Any help appreciated!
Cheers = Kabbage