I'm on the Growatt 3k ES+ 48v EG4 Server rack battery train, and I love it. I especially love that I can grow the system gradually. I currently (ha!) have one EG4 battery, and I'd like to expand that a bit. I found someone with 4 Valence batteries for sale locally for $150 each. So my options are:
4x Valence U1-12RT batteries in series with each other, tied in parallel with the existing EG4 battery (<~2kWh for $600 local pickup)
1x EG4 LiFePower4 48v battery tied in parallel with the existing EG4 battery (~5kWh for ~$1700 after shipping)
Which is the better choice, and why? I've got a bunch of pros-and-cons and I'm probably missing something that makes the choice obvious. Thanks for the advice!
4x Valence U1-12RT batteries in series with each other, tied in parallel with the existing EG4 battery (<~2kWh for $600 local pickup)
1x EG4 LiFePower4 48v battery tied in parallel with the existing EG4 battery (~5kWh for ~$1700 after shipping)
Which is the better choice, and why? I've got a bunch of pros-and-cons and I'm probably missing something that makes the choice obvious. Thanks for the advice!