Looking to replace current prosport12. I carry 4 batteries. 1 for starter and remaining 3 are house.Promariner suggests the prosport 20+. (Will control 3)put the house batteries on it use the prospprt 12 to maintain the starter battery. My biggest user would be the norcold refrig. Other than standard radio and lites.My question..prosport 20+ , another brand or another wayJim schwartzSEA YA!38LF washington nc
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