Forum Discussion
jharrell
Feb 25, 2017Explorer
You still didn't make it clear if it was AC or DC reading. If 4 amps AC that's 40 amps DC and pretty significant. If its the DC reading, it may be inaccurate on the Magnum below 10 amps as its using the AC current internally, from the manual:
"While inverting, the DC: A (Amps) displays a negative number to show the
battery current used by the inverter. If you are charging, the DC A (amps)
displays a positive number to show the amount of current delivered to the
batteries. The accuracy of this display below 1 amp AC (~10 amps DC @
12VDC) is not detected. When the current into or out of the batteries is
greater than 1 amp AC, the display accuracy is ±20%."
The BMK shunt meter has a tenth amp accuracy to and from the batteries but wont tell you what house load are drawing direct from the charger.
"While inverting, the DC: A (Amps) displays a negative number to show the
battery current used by the inverter. If you are charging, the DC A (amps)
displays a positive number to show the amount of current delivered to the
batteries. The accuracy of this display below 1 amp AC (~10 amps DC @
12VDC) is not detected. When the current into or out of the batteries is
greater than 1 amp AC, the display accuracy is ±20%."
The BMK shunt meter has a tenth amp accuracy to and from the batteries but wont tell you what house load are drawing direct from the charger.
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,189 PostsLatest Activity: Jan 21, 2025