Li-Ion Cylindrical Cell Battery Pack Remaining Capacity v Resting Voltage Table

BVH

1 kW
Joined
Mar 26, 2009
Messages
410
Found a good Li-Ion cylindrical cell pack capacity remaining v resting voltage table from an E-bike pack rebuilder.

Use the Volts Per Cell column data times number of cells in-Series to apply the table data to larger and smaller Series packs.

It might be just a bit conservative - a good thing, as it shows the cell empty at 3.0 vrs most manufacturers using a 2.5 Volts discharge cutoff.
 

Attachments

  • Ebike battery Capacity v Voltage Table.xlsx
    12.5 KB · Views: 17
Hi.
Could you tell me for what chemistry was your table made? The fact is that these numbers vary slightly depending on the type of elements and chemistry. I have never delved deeply into these differences. Once upon a time we made a summary table about capacities depending on voltage. All data was based on Samsung. I can't remember the type of chemistry.

As you can see, up to a certain point, a voltage drop of 0.1V equals a 9% drop in capacitance. After passing the midpoint of the voltage, the capacitance drops more dramatically.

Samsung.png

P.S. The table was compiled based on data from the manufacturer's datasheet.
 
Back
Top