Optima battery warranty varies. Please see website for more details;
https://www.optimabatteries.com/en-us/support/warranties/optima-redtop-yellowtop-bluetop-warranty
Optima battery warranty varies. Please see website for more details;
https://www.optimabatteries.com/en-us/support/warranties/optima-redtop-yellowtop-bluetop-warranty