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opinion:frater_secessus:healthy_agm [2022/11/08 23:57]
frater_secessus [why does AGM exist in the first place?] 		opinion:frater_secessus:healthy_agm [2022/11/09 00:08] (current)
frater_secessus
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   * because everybody else does, or did until LiFePO4 became the hot new trend   * because everybody else does, or did until LiFePO4 became the hot new trend
-  * fear of maintenance or ventilation+  * concern about maintenance or ventilation
  
 ===== what does it take to keep them healthy? ===== ===== what does it take to keep them healthy? =====
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 The dark side of AGM's ability to discharge and bulk charge at higher rates is The dark side of AGM's ability to discharge and bulk charge at higher rates is
  
-  - AGM //requires// more current during [[electrical:12v:charging#bulk_stage|Bulk charging]].  Typical minimum charge rates for AGM are [[electrical:12v:battery_capacity|0.15C to 0.2C]].  Some premium AGM require a minimum of 0.5C, or 50A per 100Ah of capacity.   +  - AGM //requires// more current during [[electrical:12v:charging#bulk_stage|Bulk charging]].  Typical minimum charge rates for AGM are [[electrical:12v:battery_capacity|0.15C to 0.2C]].  Some premium AGM require a minimum of 0.5C, or 50A per 100Ah of capacity. Failure to provide sufficient current regularly leads to a "walk-down effect" where the AGM underperforms until it receives a good kick in the pants.  
-  - Higher-current bulk charging means shorter Bulk duration and therefore extended [[electrical:12v:charging#absorption_stage|Absorption duration]] +  - Higher-current bulk charging means shorter Bulk duration and therefore extended [[electrical:12v:charging#absorption_stage|Absorption duration]].  Vandwellers struggle to provide adequate normal  Absorption duration, and completing an //extended// duration is even less likely.
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 +The easiest way to provide AGM with what it needs is to fully charge daily,  [[electrical:12v:alt_and_solar|combining]]
  
 +  * alternator charging for Big Current in Bulk Stage
 +  * solar charging for sufficient duration in Absorption stage
  
  
  
opinion/frater_secessus/healthy_agm.1667969861.txt.gz · Last modified: 2022/11/08 23:57 by frater_secessus

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