SolarEdge. Can they work with 2.4kw Pylontech batteries?


#1

Hi,

My installer is telling me that we have to use a 7kw LG battery on an 8 x 300w (2.4kw) system, as this is what he has been advised by SolarEdge. However, I know for a fact that there are companies that are connecting 8 panel solaredge systems to the 2.4kw batteries.

Who is right??

I don’t want to end up spending more than I need to for a battery that is oversized.


#2

Hi Dan

Can I ask first why you are wanting to get a battery with this system? It’s quite a small system to get storage for.

The reason you are being told this is due to the voltage I believe. LG does a 3.3kWh low voltage battery (48V) and a higher voltage range of batteries (400V) starting at 7kWh. Jason wrote about it here:

Basically the smaller battery is indeed incompatible with the SolarEdge inverter. You could use the smaller battery, but you’d need a different setup. @Svarky will be able to answer more thoroughly.

Cheers
Marty


#3

Hi Marty, thanks for taking the time to answer.

It’s a small system due to limited space on the roof. If the small battery is incompatible with the solar edge inverter, I guess the next question is, can we use a different inverter?

In the meantime I’ve come across a different solution that is to use a SoFar ME3000sp to charge the battery instead. Any thoughts or experience with this product?


#4

Hi Dan,

The solaredge Storedge inverter is only compatible with the higher voltage LG batteries. Pylontech do not make a compatible HV battery but it is possible to couple other battery types (48V) using a separate AC coupled inverter like the TrinaBESS AC or SMA SBS.

See specs below…