PV power to the battery/consamption from the battery

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alperin asked Sep 3, '19

PV power to the battery/consamption from the battery

Hello guys!

I have three-phase ve bus system with two PV chargers.

I think I have some problem with in/out power calculation on VRM portal.

If I take one-day data from VRM its look like the PV to battery power more than the battery to consumption power. So how it's happening? If I take from battery less then I use where the excess power is going?

VRM charger Solar Panel powerassist

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Answer 1 · 2019-12-27T00:37:45Z

Daniël Boekel (Victron Energy Staff) answered · Dec 27, 2019 at 12:37 AM

Hi @Alperin

A number of reasons:

-battery efficiency (charge / discharge, peukert, etc) + charger / inverter efficiency

-it can be that you use some of the energy the day after the charging has happened (and / or the other way round)

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