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Hi all
I have been charging my off grid battery setup today and have noticed that the watts used via VRM and connect is around 700 watts under what is actually being used.
Setup is 930a/h traction battery, multiplus 2 48/8000 and smartshunt 500, there will eventually be 14kw of PV connected.
I have searched but can't find an answer.
Anyone have any idea why this would be ?
A little clarification is needed here.
Your post is titled Input watts incorrect, but you are talking about being offgrid. So where is the input watts going into? The battery or the AC input? Or are you referring to loads? or PV production?
The AC in to the multi is supplying nothing else just the charger.
Usual cause for discrepancy here is power factor. Are you checking your input Watts against Vin x Amps in? This will usually give an incorrect result as you are checking VA against 'real' Watts?
