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Old 29-01-2012, 10:19   #1
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Battery Top Up Water

As we all know we use deironised water ( battery top up water for open led acid batteries) to top up the batteries... I read somewhere that the water that my dehumidifier collects is usable to top up the batteries? Has any one done this? Does any one know if this is a possibility or correct ? Comments gratefully received
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Old 29-01-2012, 10:39   #2
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Re: Battery top up water

In theory you could... However, after some time in use the dehumidifier gets "Stuff" on the evaporator fins. That is dust, biologicals (bacteria, etc) and other contaminants in the air stream. The water will be soft compared to drinking water, but I'm not sure I would put it in a battery. Distilled water is preferred, deionized water will work. Deionized DI process removes almost everything but dissolved organics. Distilled removes everything....
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Old 29-01-2012, 10:43   #3
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Re: Battery top up water

Sailorchic is right. Pure H2O (distilled water) is the only thing you want to use. Any contaminants you put in your battery can reduce its effectiveness.
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Old 29-01-2012, 10:44   #4
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Re: Battery top up water

Distilled water is 50cents a gallon in the grocery store. Doesn't make sense to go cheaper with more risk.

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Old 29-01-2012, 11:00   #5
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Re: Battery top up water

DI Deionized water is a high purity water and would not effect battery life. Plus it looks like it is easier to get in the UK. Distilled is used in the US for batteries and is available at any market... Distilled is best, but no adverse effects will happen if using Deionized water. From a battery standpoint there is no difference between the two.
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Old 29-01-2012, 11:18   #6
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Ok thanks all.... as I thought....will stick to buying from the local shop.... Bit more expensive in the UK it's 5 litres for 3.50 better get over the Atlantic quick! Lol
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