Quick question about my HV bettery

The only way to know is checking the capacity of the cells themselves. That involves charging to a known value, discharging at a known rate for a known time, and measuring the leftover charge to see how much capacity was in the cell.

Keep in mind that a 19000mi 2009 was sold 2008, so 5 years and 19000 miles makes it less than 4000 miles a year. Such a rarely used car could have problems with it just sitting there. Also keep in mind 20000 miles on the equator is much harsher to a battery than 20000 miles on a flat dynometer in an air conditioned climate controlled room.

So to answer your question, there is no answer with the information you provided.

 

Looking at the voltages:

• 15.47V - minimum block
• 15.62V - maximum block
• 0.15V - difference

As a general rule, anything under 0.3V difference suggests the battery module pairs are OK. But the best test is in operation looking for excessive heat or a voltage sag. You can record the data and export it to a <TAB> delimited file to load it into Excel. Then you can plot looking for any module-pairs that show unusual voltage sags or climbs.

Bob Wilson