I read that already...
"The amount of the proration shall be determined by dividing the purchase price by the number of months of the warranty period, and then multiplying the result by the number of months remaining in the warranty period. (Any partial months will be rounded to the nearest whole month). When a battery is replaced after the "Free Replacement Period" and a prorated fee is paid, the warranty starts from that date as a new purchase."
When they say the number of months of the warranty period, do they mean the total 5 years or just the 2 years that's pro-rated? 60 months or 24 months?
If the battery dies after 40 months and has a warranty of 60 months, you get 33% off on a new battery Given that this discount is 40%, and you cannot use coupons on warranty claim purchases, the warranty is likely to be worth zero after the free replacement period.
In addition, if the battery is replaced under warranty, the warranty does not reset. The battery in my wife's van died after 30 months. Although Advanced was great about the free replacement, the warranty on the new battery is only 6 months free replacement, and prorated from the date of the 1st battery purchase.