Has anyone used the Meritsun Powerwall battery and victron inverter as an energy storage system?
There are two 10kwh Meritsun Powerwall batteries, 48V 200Ah, without solar panels. I would like to know how to choose an inverter. Our family needs to use 15kWh every day
This is the battery parameter of meritsun Powerwall.
Sizing an inverter is usually done by knowing the max peak load of the houshold.
For you though the method is:- The normal or continuous running discharge current of the batteries x48v. For the max you van ise the batteries for.
Don't size on the max discharge current.
So if they have a 50A continuous and you have 2 batteries that is 100A. they are a bit ambiguous on the discharge current in the link you have there.
100A x 48v is 4800W so almost a 5kva inverter. I would probably use 3 there.
From what i see though you can't charge them fast 20A each so be careful there.That also leads me to think the 100A stated max discharge is a bit ambitious and they will trip.
Most homes can run ok on a 5kva, as long as not too many big draw items are on at the same time.
