To put it simply, a 12 volt battery needs to be charged at 15.5 to 16 volts to break down sulphation. That's what the better chargers do when put into "equalization" mode.
When a battery is "dead", i.e. down to 10.5 volts the plates are then covered with lead-sulfate. If charged back up in a reasonable amount of time, that lead-sulfate falls apart since it's a soft material. But . . let a battery sit for a long time while discharged and the lead-sulfate turns into hard crystals. A standard battery charger that barely reaches 14 volts cannot break it apart. This "over-volting" called "equalization" breaks down lead-sulfate crystals and also stratafies the acid - i.e. mixes it up.
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Today's Featured Article - Buying your first tractor: Choosing the right one - by Chris Pratt. They cost less than the tax on a new tractor (at least where we live). They have the weight to do the job. They are simple and understandable. They even have a history and can be restored to become a major source of pride and enjoyment. But how do you know what to buy and how do you make the right purchase? There is a surprising number of machines available in every shape and size imaginable. Like most things in life, your needs have a lot to do with wh
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