I will comment on the two brands I use the most. For collector cars where I don't want the battery to "stand out", I have been using NAPA Legend branded batteries. Cost is reasonable and they have a black case. All the stickers can be easily removed and you are left with a plain black battery with good specs. and a good warranty. I always test them before installing new. They always test 115%-120% of rated CCA, new. For cheap cars and customers on a tight budget, Batteries from Rural King are hard to beat for the $$. At about 60-70% the cost of a typical car battery, they are adequate for 2-3 years. Most of my customer cars will have some other fatal failure long before that. Like running it out of oil or coolant.
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