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--- opinion:frater_secessus:agm2lifepo4 [2025/07/05 00:45]
frater_secessus [shore power charging]
+++ opinion:frater_secessus:agm2lifepo4 [2025/07/05 01:34] (current)
frater_secessus [shore power charging] high 14s
@@ Line 134: / Line 134: @@
-IF **other forms of shore power charging are available** or **shore power charging will last at least overnight** the [[electrical:converter|shore power charger]] can be a simple, inexpensive, single-stage charger set to a relatively low voltage (13.5v - 13.6v?).((converter output voltages can often be adjusted with switches or "pots" (potentiometers).  Consult the manual or online documentation))    This will allow near full charge and load support without overcharging.  Lower set voltages like 13.2v - 13.4v will support the battery from depletion but won't charge completely.((remember, there is no requirement to charge LFP to 100%))  If there is solar present that will also contribute.
+IF **other forms of shore power charging are available** or **shore power charging will last at least overnight** the [[electrical:converter|shore power charger]] can be a simple, inexpensive, single-stage charger set to a relatively low voltage (13.5v - 13.6v?).((converter output voltages can often be adjusted with built-in switches or "pots" (potentiometers).  Consult the manual or online documentation))    This will allow near full charge and load support without overcharging.  Lower set voltages like 13.2v - 13.4v will support the battery from depletion but won't charge completely.((remember, there is no requirement to charge LFP to 100%))  If there is solar present that will also contribute.
 If **shore power charging is the only source of charging** or if **time on the charger is limited** then a more aggressive, expensive, higher-capacity multistage converter/charger may be warranted.
+If the converter is a **multi-stage charger hardcoded to Absorp in the high 14s** then a less aggressive converter will be required unless you plan to manually intervene, cutting off charging in the "upper knee".
 If the van will **be on shore power for an extended period** (days, weeks, months) then a small single-stage converter charger set to quite low voltage (13.2v?) would hold the battery at middling states of charge.  It only needs to be a bit bigger than the expected loads so gradual charging can occur.

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