Re: Pro-rata warranty??
It's probably a pro-RATE warranty. Same deal. It might have a 2 year free-replacement warranty and a 75 month pro-rate warranty. That means after the 2 years is up, you won't get an entire battery for free... you will only get a partial credit towards a new battery depending on how long you've had the battery. If you have had the battery for over 75 months, you'll get no credit towards a new battery. Take it to where ever they honor that warranty and they will figure everything out for you...
Nikon D40 - Nikkor AF-S 18-55mm 1:3.5-5.6 GII || Nikkor AF-S 70-300mm 1:4.5-5.6 G || OPTEKA CP filter HD2 multi-coated