What is the residual current drain in your motor home? The residual drain in my '84 Corvette is 13 mA (0.013 A). I can park it for a month, and it will start right up. Why do I need a battery tender? And, by the way, I really don't think an expensive Odyssey battery would be any better. And a "battery for life"? I hope my life is longer than your Die Hard battery's life!
:cool
...hmmm... ok... thanks for the response!
I hope you didn't take things the wrong way and I hope I didn't come off sounding like a promoter for battery tenders... if so, I apologize... I was just saying... that I
believe... getting/using a cheap battery tender is known to keep a battery healthy weather you have a current drain or not... whether or not you even have the battery hooked up to anything... the point my essay was trying to make is that one
may be able to make a cheap battery live as long, or longer than a very expensive one, if one used a battery tender. "May" be able to, not definitely will be able to. It's an option being delivered for thought free of charge. And... it's just a
recommendation... I didn't say you
had to have one or else suffer the consequences. I believe it's a good suggestion, that many an electronics tech would agree... It's certainly not a bad suggestion that could cause pain and anguish for oneself or others. I'll stick by it. I think it may have something to do with preventing sulphur buildup on the plates, or something like that, in the long term... I guess if you really want to know, call a couple of battery manufacturers or so, and see what they have to say about it.
This past winter was hell. I was in the hospital for a good portion of it due my spine is wrecked. It was a hellacious cold winter, bad news for your average car battery. I didn't get to start my car at all what with everything that was going on. My brand new Duralast died dead, dead, deadsky! So my wife had Autozone charge it up, and I had her buy a battery tender. Not only did it take good care of my battery but also... and this is important... It gave me
peace of mind. Surgery, after unscheduled, surgery... I didn't worry about that battery one stinkin' bit. I'll tell you what... my '85...now... using the battery tender... on my fairly new Duralast Gold... starts right up with about a half a crank and a somewhat very powerful
ooomphhh! So to does my old 2010 Dodge Grand Caravan, battery age unknown, but older than 4 years, since it came with the van when we bought it... and my big ol' Diehard Ford bigazz engine Econoline 350 Motorhome.
ooomphhh! Although there are many days when I think all 3 batteries have a very good chance of outliving me.
"you may just have a battery for life" ...translated: it
may be a good thing to do"...may not... "
battery for life"... that's like the punch line of my short little essay... I don't believe my exaggeration needs any explanation, but... no one's going to have a
battery for life... that's silly, unless unfortunate circumstances occur... and that's not the point... but one could do things to keep their battery healthy, Yes! ...and
maybe less apt to get sulfurized, or somewhat stale, or depressed... so to speak... in there also is my assumption that my readers are going to live phenomenal lengths of time and that if they use a battery tender, as I only suggest, as it's cheap insurance, they'll have a battery that dies when they do, whenever that is, hopefully in a way off distant future...
Well, it seems you have a great relationship with your battery, keepin' an eye on that current draw and all... and I hope you live a very
laaaawwwnnng life, and I hope that because of your due diligence, the two of you continue a fantastic, healthy relationship, and that you, as I hope for All, enjoy and maintain, a very healthy, very happy,
Battery for Life.

John V. Brennan, U.S. Coast Guard Veteran, Retired/Disabled
& Very Proud, Very Happy, 1985 Corvette Owner... til death do us part.