

| Subject: | Re: Costco Group 47 - cheap aux battery option |
| From: | John C... |
| Date: | Fri, 20 Jun 2008 20:38:51 +0000 |
Absolutely True, No Doubt, but .... When ya can buy 3 cheapies for the price of a nice one ? And a guys a little sloppy in maintaining the battery's,,, And as discussed before Wally Marts no question trade in! How does that affect the average? JC... PS: I mean, Sure, I'd like hair .... but look how much I'm a savin' on hair cuts !!!! ;o) -------------- Original message -------------- From: Al Knoll <anasasi@GMAIL.COM> > The house battery as as been discussed before has different operating > parameters than the starting battery. CCA is a measure of how much > current can be delivered for a short period of time (no pun intended). > A house battery does better if it is designed to deliver smaller > currents (<30A) over a longer period of time. > > The starting battery has porous plates so the maximum electrolyte to > plate contact is available for high current applications. The plate > surface per cell dictates how fast the electrochemical reaction can > proceed. The more contact the faster it goes and the more current > that can be drawn. However this configuration of plates is not well > suited to small <30 current draw over longer periods of time. For > that application a solid plate is best. Batteries that have these > sorts of plates don't deliver much in the way of CCA but do have a > larger reserve capacity measured usually in Ampere Hours. They're more > resilient and longer lasting than a starting battery of the same > physical size used as a deep discharge current source. More charge > discharge cycles without damage. > > > On 6/20/08, Troy wrote: > > Here's a link to various group sizes of batteries and thei r demensions. FWIW, > the 40R, (not mentioned) has one of the highest AH ratings of them all, with > lots of room to spare. Sears also has a 5 yr warranty, no questions asked for > the 1st 3, then prorated thereafter. Don't forget to cover the underside of the > cover (or battery terminals) with non conductive material! > > > > > > http://www.batteryweb.com/bci.cfm. > > > > Troy > >
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