Depends on who you ask. Some folk who have boiled a battery over or boiled a battery dry will shy away from rapid charging. Anybody ever care to guess just how many amps the 160 amp charging system on your vehicle rams into the starting battery on your vehicle. For the first 5-15 minutes after starting? Certainly not as much now with fuel injected vehicles as the bad old days with carbs but......... A 50amp bulk charge is not uncommon. As for backup batteries in a nuclear plant. If caught trickle charging them after a deep discharge test. You will screamed at by the supervisor and a few engineers for sulphating the plates. A heavy fast high current bulk charge at 5-10% of the battery current capacity is used. 1000amp battery is charged at 50 to 100amps. As long as the battery isn't over filled , it doesn't boil. Actual temperature is more of a concern. Above 77F a lead acid battery's life is shortened at an exponential rate. At approx 80% charge the rate is backed off to a trickle to 100%.
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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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