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Do lead acid batteries discharge when not in use?
All batteries experience some amount of self-discharge, yes. But, the rate of discharge for lead acid batteries depends on a few key factors.
Temperature: The warmer the environment while a battery is in storage, the faster the rate of self-discharge. For example, a battery being stored at an average temperature of 80℉ will discharge at a rate of 4% per week. Whereas a lead acid battery being stored at 65℉ will only discharge at a rate of approximately 3% per month.
Length of Storage: The amount of time a battery spends in storage will also lead to self-discharge. A lead acid battery left in storage at moderate temperatures has an estimated self-discharge rate of 5% per month. This rate increases as temperatures rise and as the risk of sulfation goes up.
Sulfating: This is a buildup of lead sulfate crystals and it occurs when a lead acid battery is left sitting without a full charge. Even if you are giving your battery a small charge such as putting it in the car and letting it idle, this is still not enough to combat the self-discharge that can take place.
Dirt: Dust and dirt on a stored battery can also create a reaction that leads to self-discharge. You can easily prevent this by wiping down the top of the battery with a clean, dry, and soft cloth. The best way to reduce the amount of self-discharge while your batteries are in storage is with the three C’s. Keep them clean, cool and fully charged.
https://northeastbattery.com/bat ... ead-acid-batteries/ |
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