I am planning to replace my old battery with Walmart's EverStart battery because of some problems with my former batt. 

 

Has anyone else had issues with the prorated warranty when trying to return Walmart's EverStart battery for defects?

I use the batteries from Walmart. I've never had any issues with the batteries so I never had to return one. Make sure you leave the date sticker on the battery that shows how old it is. Keeping the receipt is always a good idea. I just replaced one of my Everstart batteries I bought from them. The sticker showed 6/09

No issues from me either.

I used to put the receipt in a small baggie and duct tape it to the battery.  Only returned one for prorated refund and had no problem. 

 

I used Walmart batteries for many years with few problems.  But, my last two a few years ago both only lasted little over a year.  I since switched to Interstate.  More expensive up front, but unbelievably better performance.  Much longer lasting per charge (size 27 Interstate lasts far longer than previous size 29 Everstarts); and zero degradation after couple years. 

return policy is A+, even without receipt...