how to desulfate a lead acid battery why does a riding lawn mower's battery drain? | ehow

by:KEBO      2019-10-11
Most riding mower is equipped with electric starter and leadacid battery.If the mower cannot be started, one of the reasons that may cause this problem is that the battery is running out.The mower should charge the battery when using it;However, if the battery is exhausted every time you try to start the mower, this may be due to one of the following reasons.
A lead-The acid battery provides two major functions in the mower: provide start-up-Improve the power supply and act as a reference point for the electrical system of the mower (also known as "electrical grounding ").If both the electrical system and the battery work properly, the battery will provide sufficient power to start the mower and the electrical system of the mower will charge the battery during operation.If one or both systems do not work properly, the battery will be discharged.
A lead-The acid battery provides power through the electrolyte of the battery and the electro-chemical reaction between the lead plates in the cell.Over time, the electrolyte will begin to combine with the lead plate to form lead oxide crystals.These crystals hinder the electro-chemical reaction and reduce the available power of the battery.In order to dissolve these crystals and maintain proper electrical balance, the battery must be recharged regularly with distilled water.If the battery electrolyte level is low or the battery is not charged for more than a month, the battery may discharge too much to start the mower.
Some riding mowers are designed to be used as lawn tractors and small snow sweepers.During these operations, you may need to use headlights, trailer lighting, or other electronic accessories.If the electric system of the mower generates only enough energy to operate the engine and charge the battery, these devices may deprive the battery of the charging current, or, if the power consumed is greater than the power that the electric system of the mower can generate, it can even tax the battery.
There may be a problem with the electrical system of the mower, which runs out of battery when the mower is off.If there is a short circuit, the electrical system may continue to draw current from the batteryCircuit in the system.When certain devices that should be turned off-such as electrical relays-remain open after the engine is turned off, parasitic drain may also occur.One way to test the mower for this is to check the current consumption when the engine is off.Disconnect the positive battery cable from the battery.Connect the ammeter between the positive battery terminal and the battery cable.If the ammeter shows more than 1 mA of current consumption, the electrical system is consuming power when the engine is turned off.
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