Hi I also have a Progressive Dyne PD 4575 went thru 5-6 batteries in the first 3 years RV dealer said no problem he would replace batteries as long as I owned it. DUH!!! not fair to Interstate although their product seems to be cheap cheap . Had the converter replaced and used a different manufacturer of battery. 3 months later battery dead. Anyone had similar issues . Any suggestions would be greatly appreciated
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