Battery Hydrometer - Fiberglass RV
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Old 10-18-2013, 03:20 PM   #1
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Battery Hydrometer

This is the battery hydrometer that I like to use. It will give you a reading on the condition of each cell of your battery. Go to the link below to see it.

PROFESSIONAL BATTERY TESTER on eBay!
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Old 10-18-2013, 04:03 PM   #2
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I have one, but can't use it with sealed batteries, so I also have a load type tester. Probably not a lot of people that have seen them or know how to use it, except us old guys. There is also a similar tester for antifreeze, but for the last 10 years or more I've used the refractometer type. Nice to keep that old school stuff around though.
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Old 10-18-2013, 04:13 PM   #3
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I have opened the top of sealed batteries and topped off with water, tested and glued the top back on. Some are easier than others to do this.

Old Days:: Each cell had a lead connector going to the adjacent cell and we had a load tester that would test individual cells. The tops were sealed in tar. Some gas stations would remove an individual bad cell and replace it with a good one. I bought one of those rebuilt batteries in Phoenix for $14 back in 1961.
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