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Old 03-14-2016, 03:52 PM   #11
Junior Member
Join Date: Aug 2015
Location: Peachtree Corners, GA
Posts: 25
I was looking at the Interstate/Costco batteries the other day, you have to return them to Costco if you have a problem under warranty. They are even distributed by Costco.
I also wondered if they are the very same battery you get at an Interstate dealer or if they are made "special" for Costco.

Bruce & Caryl

2004 Designer 31RLS
2000 F350 Lariat 7.3L Dually 4 Door Long Bed
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Old 03-15-2016, 08:43 AM   #12
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Join Date: May 2013
Location: Dale Hollow Lake Tn/Ky
Posts: 1,941
Originally Posted by Paintinfool3 View Post
The reasoning is deep cycle are meant to be drained and recharged ..... if you are boondocking this is ok .... if you go from hooked to tv charging to plugged in charging it doesn't help a deep cycle... dual purpose is a mix of deep cycle and starting which will be ok with regular charging
Agree with previous post, this is very bad advice and the info is wrong. Going with a dual purpose battery is like taking a knife to a gun fight. It will get you from home to a CG where you plug in again, but has very little actual long term capacity and will have a much shorter life if used on an RV where occasional drawl down and recharge are a factor. The only advantage is cost, as dual purpose are generally cheaper to purchase and you can stick it in your tow vehicle in a pinch.

Get a true deep cycle.

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