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Battery top off water

Minerva

Platinum Member
We had a nasty surprise when the power flickered today and the UPS system dumped all our security, phone, network and computer stuff. :Q

Turns out the battery banks have not had the best of maintenance and the electrolyte levels are very low. The people that are supposed to take care of this usually top these off with pure water.

Several people here that think they know everything say tap water is fine and someone else said use the water cooler water! Neither source is really pure as in no mineral content so...

Not that the batteries are borked already, but assuming they're OK and will charge if topped off; how much harm would putting bottled water in the batteries do? It will probably take a few jugs to top these off as these are pretty darn big batteries and there's a wall of 'em.

They are most likely goners but if we can at least get enough capacity out of them for now to ride through a flicker (that's all it was too!) it should hold over until a contractor can come out and replace them.
 
AFAIK you should really only use distilled water. Also the low levels, if they've been low for some time, may have noodled the plates.


Or I could be wrong...
 
Originally posted by: DivideBYZero
AFAIK you should really only use distilled water. Also the low levels, if they've been low for some time, may have noodled the plates.


Or I could be wrong...

I think you may be right.
 
distilled water is best, but tap water is better then none at all.

If they have been low for a while, they are probable already dead or at least very weak now.
 
Best if you can go to an Auto Parts store and get a container of Battery Acid.
Water, in any form, is good to just top off the batteries, but if they are seriously low, pure acid is the best.
 
if you don't use distilled water, you'll finish them off

just go to a drug or grocery store and buy some jugs of distilled water

don't add acid unless you measure the density, acid can't leave the cell unless you have a leak

short term: top off with distilled water

long term: hire a professional to properly maintain your equipment if you want it to work
 
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