Re: Wet Cell versus AGM batteries for old cars

Posted by JWL On 2011/11/21 11:08:17

Tom, nice write-up. Obviously, you have been seriously thinking about this. Thanks for doing this.

Here are a couple of additional data points for consideration.

I have found that if my WC batteries are disconnected (either removing the ground cable or switching the battery cut-off switch) that the batteries will hold enough of a charge for many months, without any attention, to start the engine. One is relatively new at about 18 months, but one is approaching its 5th year. The age of the other one, a 12-volt, is not known, but guess at least 4-years. Whether 6- or 12-volt does not seem to make any difference. I am somewhat surprised at this, but glad to have it.

Russell, (I believe that is his name), an acquaintance of the Flackmaster, made some comments about AGM batteries at one of the Tech Sessions in Salado. If I recall correctly, he said that if your 6-volt AGM battery goes dead, and you get a boost to get going, you will need a new battery by the time you drive it home. He did not go on to explain what was happening, nor did he get any questions as to the why, but was recounting an experience.

(o[]o)