I thought this graph might be of interest to those who want to see what happens when you run a large Nissan leaf pack down to zero state of charge. (SOC) It’s been consistently 90 degrees during the day and still about 75-80 at night, the last few days have been cloudy, I left the […]
victron
Completed Lithium Battery Overview
25kWh of total capacity. Charge and discharge limits fence this to 19kW of usable capacity with an expected lifetime of 14-18 years before replacement of cells is necessary. 3kVA in split phase. So about 6kW total outputish. Recharges via 50 AMP RV connection or 2.5kW of roof solar. Remote monitoring via cellular data with packet radio fallback. Weighs about […]
Victron Programming
This was a pretty great moment. After figuring out Victron’s nomenclature for configuring inverter virtual groups, I got this display from the Venus GX. Not shown is the programming software screens, but you get the idea. This was the first time that the batteries had taken on electrical charge since I had disassembled them from […]
Victron Inverter Connection
Wiring the inverter pair up was pretty satisfying. It’s interesting to see how Victron specified 2x 2/0 lugs for the power connection. I tried to make all the DC cabling exactly the same length. For the AC cabling, crimp ferells were used to keep the terminals clean and neat. The terminals with the orange tape […]
AC Distribution Panel Update
Previously I had build the AC distribution panel from DIN rail components – but it was set up for a single AC source. This means that it had a set of continuous duty contactors wired in a “transfer switch” arrangement. This transfer switch arrangement is typical of standard inverter power supply systems in RVs. That […]
Control Center Panel
Since I opted to purchase a Victron Venus GX instead of a Color Control GX for the systems integration, I wanted a panel that was centrally located. I built this by just cutting out the center of the door, and back-painting the plastic. The display is the official Raspberry Pi 7″ touch display, with a […]