Differences

This shows you the differences between two versions of the page.

--- electrical:converter [2020/07/22 14:52]
frater_secessus [DIY smart converters]
+++ electrical:converter [2021/05/31 12:45]
frater_secessus [charging the house battery]
@@ Line 16: / Line 16: @@
 ===== charging the house battery =====
-OEM converters are notoriously cheap and dumb (lacking [[electrical:12v:charging|smart charging]] functions).  Since they are stuck at one voltage the manufacturer picks a compromise setpoint.  If this is set too high or too low //for your usage patterns// it can damage lead-acid batteries ([[electrical:batterycide|batterycide]]).
+OEM converters are notoriously cheap and dumb((single-stage)) (lacking [[electrical:12v:charging|smart charging]] functions).
+Note:  if you have sufficient solar to complete Absorption then a "dumb" converter can work fine and shore power will support the battery on subsequent days.  In this model the converter + solar would contribute up to [[electrical:solar:charge_controller_setpoints|Vfloat]], then solar would raise the bank to Vabs and fall back to Vfloat when Absorption is done.  Shore power holds Vfloat indefinitely thereafter.
+Some single-stage converters allow the user to configure the float voltage, typically somewhere between 13.2v - 13.8v.  If the converter does not allow this adjustment then pick one with an appropriate float voltage ([[electrical:solar:charge_controller_setpoints|Vfloat]]) for your battery bank.
-This compromise setpoint should coincide with standard float voltage (Vfloat) for your battery bank.  Typically this would be 13.2v - 13.4v for converters that are always on the grid, and 13.8v for batteries that are cycled but get put back on grid charging regularly.((Solar charging at a single setpoint, as with a [[electrical:solar:charge_controller&#shunt|shunt controller]], is done at [[electrical:solar:shunt_tweaking|Vabs rather than Vfloat]].))

RV and vandwellers wiki

User Tools

Site Tools

Differences

Page Tools