Redoing the battery.

Rebuilt Batteries are only a temporary fix.

 

that's what makes them so much fun!

 

"Temporary" has quite a wide tolerance. Sometimes 1 month...sometimes 5+ years
On a tight budget, that one module can be replaced, and that battery may last a while. You never know until you try.

 

Odd values on the bottom. The internal resistance is exactly the same on all modules, even the one which has a very low voltage. The bad one also has a 0.00 cumulative delta voltage, while the other cells have tiny voalues. Isn't a weak cell usually a large CDV? Guessing this is a brief snap shot and the software hasn't had time to collect enough data to properly calculate those values.

Edit: the display really should indicate the data collection period somewhere...

 

even a new oem is temporary, as is life

 

The IR value of 19 is default whenever 12v is lost and restored. It updates eventually, but the screenshot is likely to have been done shortly after a 12v cycle.

 

Aren't we a 211 volt-based system?

 

I can not give you a SOC for a 207.2v battery, but it will be very low. It would be good to charge the complete battery to the 220v range.

 

No, we are a 201.7 V (nominal) voltage system. We aim for 210 V as a minimum to equate to 40% SoC.

It is below the 40% SoC minimum. You need to charge it to be above 210 V and 220 V to 222 V would be desirable.

This assumes you've replaced the 2.3 V module with a different one that matches the capacity and resting voltage of the other 27 remaining modules.