2 Year Manufacturer's Warranty
8.3 Year Manufacturer's Pro-Rated Warranty
Lumedyne Large Battery Module
After initial warranty, and until 8.3 years from original purchase, if any Lumedyne Battery fails to take or hold a charge, return it to Lumedyne (with proof of purchase).
Lumedyne will then sell you a replacement battery at a percentage of its replacement cost, depending on the age of the battery.
Contact 1-800-586-3396 in the U.S., or E-Mail firstname.lastname@example.org for more details.