Lead Battery Desulfator: what should be used if the battery is ready to die
Posted on | December 25, 2010 | No Comments
When we say that a battery has gone dead, what we really mean is that it has lost the ability to hold a charge, and this is usually brought about by the formation of sulphur crystals on the lead plates. These crystals accumulate as a battery goes through several cycles of charging and discharging. Over time, there will no longer be enough usable material for the battery to generate electricity; hence, it “goes dead.”
Sulfation is a process that normally takes place in all lead-acid batteries. The good thing is that it can be avoided easily by making sure that a battery is recharged fully immediately after it goes through a discharge. And here’s another piece of good news: Even if you fail to prevent it, the sulfation process can still be reversed with the use of a lead-acid battery desulfator.
The process of desulfation, which is also known as pulse conditioning, is able to partially restore a battery’s ability to hold a charge. It works by subjecting the battery to high-voltage electrical pulses emitted between the battery’s terminals. These pulses effectively break up the crystals, thus restoring the supply of usable material for the generation of electricity.
Of course, you can contact a mechanic and him perform the battery desulfation for you, or you can purchase a lead-acid battery desulfator from an automotive store. But, if you want to save some money, you can actually make your own battery desulfator from materials that can easily be found at home. You’ll need a standard-sized can, some double-adhesive tape, perforated board, a piece of adhesive copper foil, two standard switches, some capacitors, glue, a LED, and a FET.
Build the desulfator box by cutting out a piece of the perforated board, just small enough to fit snugly into the inner bottom of the can. A piece of copper foil attached to the edge of the perforated board can serve as ground bus. You may then arrange the switches, pots, resistors, LED, and FET on the board such that you will need only the shortest jumper wire connections. Insulate the desulfator by inserting a piece of cardboard around the perf-board. Glue everything into place.
Now, it’s time to drill the necessary holes. Drill one hole for the wires on the left side of the can and then line it with a rubber grommet. Drill three ventilation holes on the right side and then one hole on the can’s lid. The lid hole will allow you to observe the LED while the desulfator is in use.
The final step in making your own lead-acid battery desulfator involves soldering the lead wires into place. Insert the wires through the left hole and then solder them onto the capacitors. The lead wires will then be clamped onto the battery that you are going to desulfate.
With this simple, homemade battery desulfator, you can easily extend your battery’s life span and restore the usability of old batteries. You can even use it to earn some extra income by setting up a small battery desulfation and business improvement.
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