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Old 16-08-2017, 11:36   #1
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Hello fellow battery geeks. The question of the day is. Can you take a hydrometer reading on a battery that is on a charger and trust the result. I vote yes but as you know that doesn't count for much
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Old 16-08-2017, 13:19   #2
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Re: Hydrometer

No, or at best "it's complicated".

Search for specific gravity here:

TL;DR let them rest first
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Old 16-08-2017, 13:59   #3
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Re: Hydrometer

If there are not a bunch of bubbles. And you compensate for the temperature. Yes you can.
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