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electrical:12v:psoc [2017/11/08 19:28] frater_secessus [sulfation] |
electrical:12v:psoc [2020/10/11 19:48] 127.0.0.1 external edit |
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====== Partial State of Charge ====== | ====== Partial State of Charge ====== | ||
- | //Partial state of charge// (PSoC) refers to the state of a lead-chemistry battery when it is left below 100% State of Charge (partially [[electrical: | + | //Partial state of charge// (PSoC) refers to the state of a lead-chemistry battery when it is left below 100% State of Charge (partially [[electrical: |
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+ | Since state of charge is measured "on the way down" from [[electrical: | ||
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+ | - failure to fully charge lead batteries (typically [[electrical: | ||
+ | - fully and correctly charging but then allowing the battery to rest without a Float (maintenance) charge (less common) | ||
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+ | Both long periods of PSoC and incomplete charging | ||
===== optimal deep cycling ===== | ===== optimal deep cycling ===== | ||
- | In a perfect world, lead-acid batteries (both flooded and AGM) would be discharged no further than 50% then [[electrical: | + | In a perfect world, lead-acid batteries (both flooded and AGM) would be discharged no further than 20% then [[electrical: |
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+ | In actual usage it is more common to discharge to 50% SoC. This allows 2.5x the power to be used overnight at the cost of longevity. | ||
It is easier to get the batteries fullly charged each day when [[electrical: | It is easier to get the batteries fullly charged each day when [[electrical: | ||
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===== sulfation ===== | ===== sulfation ===== | ||
- | [[https:// | + | The mechanism for PSoC-driven battery damage is [[https:// |
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+ | Rolls Battery explains | ||
> In normal use, battery plates are getting sulfated all the time. When a battery is being discharged the lead active material on the plates will react with the sulfate from the electrolyte forming a lead sulfate on the plates. When there is no lead active material and or sulfate from the electrolyte remaining the battery then is completely discharged. After a battery reaches this state, it must be recharged. During recharge, the lead sulfate is reconverted into lead active material and the sulfate returned to the electrolyte.((http:// | > In normal use, battery plates are getting sulfated all the time. When a battery is being discharged the lead active material on the plates will react with the sulfate from the electrolyte forming a lead sulfate on the plates. When there is no lead active material and or sulfate from the electrolyte remaining the battery then is completely discharged. After a battery reaches this state, it must be recharged. During recharge, the lead sulfate is reconverted into lead active material and the sulfate returned to the electrolyte.((http:// | ||
A comparison might be made with a pot that was used to cook oatmeal; | A comparison might be made with a pot that was used to cook oatmeal; | ||
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+ | To avoid hard sulfation and dramatic damage to battery capacity, fully charge the battery to 100% SoC as often as possible. |