> Begin forwarded message: > > From: Jeff Myles <j...@rollsbattery.com> > Subject: Re: [RE-wrenches] Battery Specific Gravity versus Electrolyte Level > Date: February 9, 2021 at 8:54:04 AM EST > T > Cc: > The main reason the manual instructs not to top up all cells before > equalizing is to avoid overfilling to/up in the vent and having a spillover > when they bubble. > > We suggest inspecting and topping them up after because they also go through > water running the equalization. If a cell is noticeably lower than others it > would make sense to top it up slightly to bring the electrolyte to a similar > level as the others before beginning the process. If it's just one cell in > the bank I would expect the SG reading on that one will be off from the > others to begin with. If it's going through more water than others it's > getting hotter. Why? > > Lower liquid level doesn't always equate to higher acid concentration. The SG > reading in the cell with lower electrolyte would only read higher than others > if the cell, like the others, wasn't suflated. If it is sulfated, the SG > readings at full charge are lower because the sulfate has accumulated on the > plate and not released back into the electrolyte during charging. > > First, he should check all cells at float charge before beginning the > equalization so he knows where they're all starting from. Is the cell with > the lower electrolyte level reading higher or lower SG than the others? Are > the rest completely balanced and this one is off? > > SG readings immediately after equalization and before adding water will be > elevated due to temperature. To get accurate readings after adding water he > should cycle the batteries 2-3 times, allowing it to mix normally, and then > check SG at float charge. SG results after an equalization are accurate after > the bank has been cycled a few times. If cell(s) were sulfated, they will > continue to desulfate as they're cycled normally so the results aren't > immediate. > > > > > > > > > <http://www.rollsbattery.com/> <http://www.rollsbattery.com/> > <http://www.rollsbattery.com/> <http://www.rollsbattery.com/> > <http://www.rollsbattery.com/> <http://www.rollsbattery.com/> > <http://www.rollsbattery.com/> <http://www.rollsbattery.com/> > <http://www.rollsbattery.com/> <http://www.rollsbattery.com/> > <http://www.rollsbattery.com/> <http://www.rollsbattery.com/> > <http://www.rollsbattery.com/> <http://www.rollsbattery.com/> > <http://www.rollsbattery.com/> <http://www.rollsbattery.com/> > <http://www.rollsbattery.com/> <http://www.rollsbattery.com/> > <http://www.rollsbattery.com/> <http://www.rollsbattery.com/> > <http://www.rollsbattery.com/>Jeff Myles ⋅ Marketing Manager > t +1.902.597.4012 m +1.902.802.6962 > f +1.902.597.8447 e j...@rollsbattery.com <mailto:j...@rollsbattery.com> > international mobile +1.917.463.8389 > <x-msg://45/#SignatureSanitizer_SafeHtmlFilter_> > <http://www.facebook.com/RollsBattery> <http://www.facebook.com/RollsBattery> > <> <http://www.twitter.com/RollsBattery> <> > <https://www.youtube.com/user/RollsBattery> <> > <https://www.linkedin.com/company/rolls-battery-engineering> <> > <http://www.instagram.com/RollsBattery> > <http://www.instagram.com/RollsBattery> > <http://www.instagram.com/RollsBattery> > CONFIDENTIALITY: The information transmitted herein is intended only for the > addressee and may contain confidential, proprietary and/or privileged > material. Any unauthorized review, distribution or other use of or the taking > of any action in reliance upon this information is prohibited. If you receive > this email in error, please contact the sender and delete or destroy this > message and all copies. > > >
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