Initial Battery Charge Poll results

I am still getting the hang of polls too.
When you got to the forum, at the top of the forum under the banner there is a row of tabs, poll is the last one at the right.

Bob and John,

Drivesafes initial thread

This was not an EO poll as such just another thread ;)

Cheers Kev

Sir Kev, even reading the post you have the link to doesn't allow us to understand the point of the poll in drivesafe's post. Some secondary batteries are of different designation and require different charging characteristics. There will be no conclusions to be drawn from the poll, that will be of any value.

Who was that again?
Mate you should read the thread again, the entire thread is EXCLUSIVE to Cranking batteries.

There's NO reference anywhere to Auxiliary (secondary) batteries.
You say: "Some secondary batteries are of different designation and require different charging characteristics" yes, but as can be clearly seen they were not involved in the 'poll' in any way.


You then say: "There will be no conclusions to be drawn from the poll, that will be of any value"
I'm sorry you can't see a conclusion from the 'poll'
I believe it's obvious the "70% Cranking battery charging myth" has been resolved.

It can be seen ~50% of batteries are shown to be still registering 12.6v, 12 hours after being removed from their charging source, if this is not indicative of >70% charged then I will be informed here (very) soon :)

Maîneÿ . . .

John,

Drivesafe started the poll not me LOL

As to what was hoped to be gained out of it, I presume only he would be able to explain it??
From what I gather it was only based on Primary batteries and not any additional ones.

Cheers Kev

Mainey, I saw the other posts, but decided I didn't want to troll through again. I don't know the myth about "70% cranking batteries"

Kev, mate, enjoy St George. I haven't looked lately to see who is going, but have talked to some not going, including one driver of a souped up Troopy, who is getting further into souping up territory. He will be up to his knees in blanket sticking stuff soon if he isin't careful.

Mainey,
"Mate you should read the thread again, the entire thread is EXCLUSIVE to Cranking batteries"

There are many different types of cranking batteries that have both different charging algorithms and different resting voltages. Polls can be interesting, but when you get 50 results using 50 different meters by 50 different users on say 5 different cranking battery types of different ages, with resting voltages at different times, it does lack any scientific validity.

Phil,
Yes, of course your correct, maybe I should have said "Cranking batteries N0T Deep Cycle batteries" to be more politically correct :-)

I will admit it does lack "scientific validity" but then it was stated to be a simple exercise, by people with their own instruments.

However I believe an average of the Voltage numbers presented will still confirm the 70% claim is myth.

Maîneÿ . . .

Na Mainey, Just proves that most low cost voltmeters read a little high !!! The figures prove it.

Ian

Thanks Mainey.

Hi Phil, Mainey covered it pretty well, this was never intended to be a scientific experiment just a basic exercise and was intended to see how many batteries ( if any ) were being charged way above the 70% myth.

The going theory, used by quite a lot of advertisers to promote their gear, is that an alternator will not charge any flooded wet cell cranking battery above 70-75% SoC.

While collecting the figures using a multi meter is not an exacting science, neither was the intention of the poll.

But as Mainey pointed out, this 70% is a dead and buried myth.

Quote by Ianw, “Na Mainey, Just proves that most low cost voltmeters read a little high !!! The figures prove it.” End of quote

Funny you should say that Ian, a number of people on some of the forums tried to use this as an excuse the nullify the results.

The problem with their theory is that while the accuracy of some meters could be out, it safe to say they could be out in either direction, so while some may read high others may read low.

All’s fair in love and war!

Thanks John C. After about ten minutes I have finally found the button. Bob.