Branch & all,OK, according to Google (https://www.google.com.au/search?q=w...&client=safari) the pH of "battery acid" is 1. Branch, did you shake up your battery when you added the SO4 or are you measuring the pH of the acid sitting on top? Sorry if you already answered this.
John K.
P.S. I'll do a quick video of my meter
John K.
P.S. I'll do a quick video of my meter
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