Now that the weather has cooled down our solar panels are giving us far more energy than we need. This causes the batteries to remain at a charge over 100% all the time. This also means the batteries are going through more water due to the excess energy. I needed to refill the batteries and didn't want to buy a bunch of distilled water in plastic bottles. Instead I tested the difference between our rain water we have caught and distilled store bought water I already had on hand. It turns out our rain water has about 8 PPM while our store bought distilled water as at 11 PPM. Our rain water actually has less particulates than Shure Shine store bought distilled water. Needless to say I filled my solar batteries up with rain water and have no plans to purchase distilled water gain.
5 comments:
Interesting comparison between rain water and distilled water. You say you measured 8 PPM and 11 PPM. Parts per million of what? Maybe the plastic is leeching into the distilled water. Seems like distilled water should be bottled in glass, not plastic.
After almost five years is there an update this this post?
Same batteries, same rain water process. No issues.
Please describe your "process:" Surely you filter the water out of your storage tank(s)?
At 8-11 ppm there is no need to filter. You can't get any cleaner without super lab grade RO setups. I have two tanks chained for rain collection and pull off the second which avoids sediment.
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