JT, Most new cars today come with sealed batteries. Going back to 2005 to 2018 all my new GM Cars came with a sealed battery. My 2018 says not to replace with a wetcell. I Can't tell you the last time I used my hydrometer. I only buy sealed batteries, especially lawnmower batteries.
BTW, I typically get 7 to 10 years out of my batteries. This one died young. Always nice to have a spare new battery instead of going to town.
Reason for this post is to prove battery voltage alone isn't enough. Charging a battery for 2 days isn't enough. The age of the battery isn't enough. Rarely have I had a bad battery in a few months, but it has happened. Load testing or conductivity testing is also deeded to determine if a battery is junk.. The ultimate load test is will the battery start the engine? Happy cranking current is needed. Happy days.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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