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Max Housing Size - 100mmx65mm


Current BMS

Anchor
bluetoothBMS
bluetoothBMS

Bluetooth BMS

aliexpress.com - C$23.63


JBD Smart BMS-SP17S005 is a software protection board scheme specially designed
for 10～17series lithium battery packs.The whole system adopts concave convex front-end
acquisition chip

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Power Turns Off When Driving - A lot

The battery would turn off when pulling higher currents. If I was easy on the throttle, I could get it to stay on.


Testing the cells showed that they were within spec. 

Cell
Voltage
12345678910
1
3.957
2
3.959
3
3.966
4
3.968
5
3.975
6
3.969
7
3.979
8
3.985
9
3.977
10
3.988

I decided to disassemble the battery and test every cell. They appear to be fine. Capacity tests results were good.

When disassembling the battery, I noticed a wire with exposed copper. I assumed I hit it with the razor blade when taking it apart but it may have pre-existed.


Ordered a new Smart BMS with Bluetooth which might help diagnose future issues. 

See Bluetooth BMS.


References

ReferenceURL
F4W Peak 350W electric bikehttps://www.f4wbikes.com/#!peak/cee5
F4W (Fast4ward) Peak 350W Electric Bike Reviewhttps://electricbikereport.com/f4w-fast4ward-peak-350w-electric-bike-review/
Detailshttps://www.greenfinder-mobility.com/e-bikes/brand/fast4ward/#/product_preview/1375
Reviewhttps://www.youtube.com/watch?v=1bcUQ2ykW_M
How to install a Brushless DC Controller on Ebike: The missing manualhttps://www.youtube.com/watch?v=PuwnFMHHtaE
Increase speed of ebike: Swagtron EB5 controller upgradehttps://www.youtube.com/watch?v=QbsPzjG-QpA