Rogue MPPT, 490W and charging mysteries
Now that we were finally all in one place - me, Rogue 3048 and my rig - it was time to have some fun. 1)Battery: old starter, tested beyond dead, plates above the water. No wonder, 8 months in Mex...
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".... Rogue has got one of displays with ~0.08V on the higher side"
Both my Trimetric and another voltmeter I use some distance from the batteries read a bit high. AFAIK it is due to voltage drop on the long wires between the meters and the batteries they go to.
Trimetric lets you adjust the voltage reading at the monitor to match what you see at the batteries with your digital multimeter.
This is similar to the situation where if you have the solar controller a long way from the batteries, the controller thinks the batteries have a higher voltage than they really do, and stops charging them too soon.
Both my Trimetric and another voltmeter I use some distance from the batteries read a bit high. AFAIK it is due to voltage drop on the long wires between the meters and the batteries they go to.
Trimetric lets you adjust the voltage reading at the monitor to match what you see at the batteries with your digital multimeter.
This is similar to the situation where if you have the solar controller a long way from the batteries, the controller thinks the batteries have a higher voltage than they really do, and stops charging them too soon.
