Battery Water.
in [Tech]
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From: paul c on 24 Jul 2010 14:33 LSMFT wrote: > paul c wrote: >> LSMFT wrote: >>> ... >>> You can fill a battery with a syringe. They have them at auto parts >>> stores. The holes are too small for regular battery filler tubes. >>> >>> >> >> Or a plastic straw! (available nearly everywhere) > Straws are too big. > They've worked for me, although I wouldn't try withdrawing electrolyte with one.
From: paul c on 24 Jul 2010 14:41 Rob Kleinschmidt wrote: > On Jul 23, 4:30 am, paul c <toledobythe...(a)oohay.ac> wrote: >> Regarding 'boiling off' is it just the water that is reduced? (IOW no >> need to replenish acid?) > > Correct. Thanks for the pertinent answer - that's what I thought. Apparently the boiling point of sulphuric acid is much higher than water. (And boiling is not the same phenomenon as sulfation.) (Since a ratio is involved, I don't see how adding electrolyte, as opposed to water, at least to a battery that has been filled previously, can achieve the desired specific gravity ratio, unless the addition has a much higher ratio which seems unlikely, unless whatever sulphation that has occurred can be preserved and maybe not even then for all I know. Rough experience just seems to suggest to me that once a mistake has been made with a lead-acid battery only a stroke of luck can renew it anywhere close to perfection.)
From: ` on 24 Jul 2010 19:30 On Jul 24, 11:41 am, paul c <toledobythe...(a)oohay.ac> wrote: > (Since a ratio is involved, I don't see how adding electrolyte, as > opposed to water, at least to a battery that has been filled previously, > can achieve the desired specific gravity ratio, unless the addition has > a much higher ratio which seems unlikely, unless whatever sulphation > that has occurred can be preserved and maybe not even then for all I > know. The shop manual for my GSXR750 instructs me to adjust the specific gravity of my electrolyte near the end of the estimated charging period (which is based upon the known specific gravity, temperature corrected).
From: mike on 25 Jul 2010 00:15 paul c wrote: > Regarding 'boiling off' is it just the water that is reduced? (IOW no > need to replenish acid?) "boiling" is a fairly precise term that means that the vapor pressure of the liquid is at least as great as the atmospheric pressure. That requires rather high temperatures for electrolyte. That doesn't seem to be happening. So, is the water boiling or dissociating?
From: Rob Kleinschmidt on 25 Jul 2010 00:36
On Jul 24, 3:30 pm, "`" <breoganmacbr...(a)yahoo.com> wrote: > On Jul 24, 11:41 am, paul c <toledobythe...(a)oohay.ac> wrote: > > > (Since a ratio is involved, I don't see how adding electrolyte, as > > opposed to water, at least to a battery that has been filled previously, > > can achieve the desired specific gravity ratio, unless the addition has > > a much higher ratio which seems unlikely, unless whatever sulphation > > that has occurred can be preserved and maybe not even then for all I > > know. > > The shop manual for my GSXR750 instructs me to adjust the specific > gravity of my electrolyte near the end of the estimated charging > period (which is based upon the known specific gravity, temperature > corrected). Good for you and your shop manual. Here's a nice reference on adjusting specific gravity. http://www.tpub.com/content/batteries/TM-10-6140-200-14/TM-10-6140-200-140027.htm Note the following paragraph. "Normally it should never be necessary to adjust the gravity, but upsets, jar breakage, additions of too much water and careless use of hydrometer can result in electrolyte loss and possible reductions of battery capacity.Lost electrolyte must be replaced but only after it has been determined that charging will not restore the gravity to normal when at the recommended level." So what kind of mistakes were you making which caused you to have to add acid to the battery ? Or did this all take place only in your head ? Perhaps you'd now like to cite your job history again to bolster this pretense of expertise. |