Asymmetric battery pack with varied electrode and current collector properties to achieve C-Rate balancing

A method for balancing a C-rate of an asymmetric battery pack, the method comprising:

• packaging a first jelly roll battery cell and a second jelly roll battery cell into the asymmetric battery pack, first jelly roll battery cell comprising a first battery design and the second jelly roll battery cell comprising a second battery design, wherein the second battery design is different than the first battery design;
• balancing a C-rate of the second jelly roll battery cell with a C-rate of the first jelly roll battery cell by increasing a thickness of a current collector of a cathode layer of the second jelly roll battery cell to reduce an impedance of the second jelly roll battery cell;
• and
• connecting the first jelly roll battery cell and the second jelly roll battery cell in parallel.