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electrical:12v:psoc [2017/11/08 19:15] frater_secessus [practical deep cycling] |
electrical:12v:psoc [2018/05/18 23:38] frater_secessus [optimal deep cycling] |
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===== 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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{{ http:// | {{ http:// | ||
- | Some premium AGM like Lifeline, Northstar and Odyssey may be able to tolerate longer stretches of PSoC although capacity will be reduced up to 30% during those periods.((electrical:solar:output# | + | Some premium AGM like Lifeline, Northstar and Odyssey may be able to tolerate longer stretches of PSoC although capacity will be reduced up to 30% during those periods.((http:// |
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===== sulfation ===== | ===== sulfation ===== | ||
+ | The mechanism for PSoC-driven battery damage is [[https:// | ||
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+ | Rolls Battery explains the normal process of soft sulfation like this: | ||
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+ | > 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:// | ||
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+ | 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. |