electrical:12v:eternal_absorption
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision
Previous revision
Next revision
|
Previous revision
Next revision
Both sides next revision
|
electrical:12v:eternal_absorption [2020/09/23 15:59]
frater_secessus [workaround] |
electrical:12v:eternal_absorption [2021/05/05 11:00]
frater_secessus [workarounds] |
| |
| ===== workarounds ===== | ===== workarounds ===== |
| See: [[electrical:severe_battery_use#increasing_effective_absorption_duration|increasing effective Vabs duration through increased voltage]]. | |
| | While you may not be able to increase the //actual// duration,((as when the controller setpoint is maxxed out)) you can achieve a similar effect with one or more of these techniques: |
| | |
| | |
| | * if duration setpoint is maxxed then **set Vfloat == Vabs**. Absorption duration will effectively be "until the sun goes down". |
| | * **charge at a lower current** (charging minimum). While [[opinion:frater_secessus:charging_faster|overall charging will take about the same amount of time]], Bulk's share of that time will increase and [[electrical:12v:charging#absorption|Absorption will take somewhat less time]]. |
| | * **Absorb at a higher((but still manufacturer-sanctioned)) voltage** (Vabs), this will decrease Absorption duration. Keep a close watch on water levels for flooded batts, and also mind the max allowable voltage for AGM/Gel. |
| | * **Float at a higher((but still manufacturer-sanctioned)) voltage** (Vfloat). |
| | * [[electrical:12v:alt_and_solar|supplement]] solar charging with another charging source during Bulk, allowing more time for solar to finish absorption. |
| | |
| | |
| | |
| | |
| | |
| | |
| | Some controllers/chargers have a "restart Absorption" option allows one to override Float and get more time at Vabs. Best use of this feature would be to look at the controller display a few minutes before the Absorption timer is due to expire. If acceptance is good let it go. If acceptance is too high give the bank another round of Absorption. |
| |
| If those approaches are insufficient, //Eternal Absorption// approach completely forgoes Float stage, forcing the controller to stay in Absorption by **setting Vfloat to Vabs**. This addresses the controller issues above. It will not address the insolation problem on a given day, but extended Absorption will help reduce damage from previous days of poor harvest. | If those approaches are insufficient, //Eternal Absorption// approach completely forgoes Float stage, forcing the controller to stay in Absorption by **setting Vfloat to Vabs**. This addresses the controller issues above. It will not address the insolation problem on a given day, but extended Absorption will help reduce damage from previous days of poor harvest. |
electrical/12v/eternal_absorption.txt · Last modified: 2021/05/05 11:04 by frater_secessus
