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electrical:batterycide [2019/12/14 13:19]
frater_secessus [murdering flooded lead-acid] |
electrical:batterycide [2020/07/08 12:25]
frater_secessus |
| | Words of Wisdom: |
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| | > Over many years of capacity testing hundreds and hundreds of batteries, flooded, GEL and AGM I have yet to see a lead acid battery that could delivers its full storage potential at anything less than 0.75%((C/80)) in tail current at absorption voltage. MaineSail((https://marinehowto.com/how-fast-can-an-agm-battery-be-charged/)) |
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| ====== Battery murder ====== | ====== Battery murder ====== |
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| * leaving them at [[electrical:12v:psoc|partial state of charge]], resulting in //irreversible// sulfation((AKA "hard" sulfation. The battery undergoes "soft" sulfation and desulfation during normal charging/discharging.)) | * leaving them at [[electrical:12v:psoc|partial state of charge]], resulting in //irreversible// sulfation((AKA "hard" sulfation. The battery undergoes "soft" sulfation and desulfation during normal charging/discharging.)) |
| * not charging soon enough; fully charging each day is best. | * not charging soon enough; fully charging each day is best. |
| * not charging fully; they need a [[electrical:12v:charging#absorption_stage|long Absorption stage]] at manufacturer-recommended voltage to reverse normally-occurring ("soft") sulfation.((http://support.rollsbattery.com/support/solutions/articles/5964-battery-sulfation)) \\ [[electrical:generator#charging_batteries|Generator-]] or [[electrical:12v:alternator|isolator-only]] charging can cause this unless the generator runs the necessary number of hours it takes to complete Absorption. \\ Less commonly, [[electrical:solar|Solar]]-only charging can cause this problem if the [[electrical:solar:sizing|battery capacity is too great for the solar output]]. | * not charging fully; they need a [[electrical:12v:charging#absorption_stage|long Absorption stage]] at [[electrical:solar:charge_controller_setpoints|manufacturer-recommended voltage]] to reverse normally-occurring ("soft") sulfation.((http://support.rollsbattery.com/support/solutions/articles/5964-battery-sulfation)) \\ [[electrical:generator#charging_batteries|Generator-]] or [[electrical:12v:alternator|isolator-only]] charging can cause this unless the generator runs the necessary number of hours it takes to complete Absorption. \\ Less commonly, [[electrical:solar|Solar]]-only charging can cause this problem if the [[electrical:solar:sizing|battery capacity is too great for the solar output]]. |
| * discharging too deeply. Maximum discharge is typically limited to 50% [[electrical:depth_of_discharge|depth of discharge]]. | * discharging too deeply. Maximum discharge is typically limited to 50% [[electrical:depth_of_discharge|depth of discharge]]. |
| * allowing the cells to get low on distilled water. Check them 1x/month or so until you learn their personality. | * allowing the cells to get low on distilled water. Check them 1x/month or so until you learn their personality. |
