
DIY Battery Pack with Sol-Ark Inverter, Whole Home Backup
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Project Details:
- LFP prismatic cells (REPT 280Ah)
- 16S2P configuration, 51.2V nominal, 560Ah (~28kWh Capacity)
- Nuvation BMS and custom stack switchgear – view options
- Compression end plates – view product
- Custom bus bars – view options
- Sol-Ark 12kW hybrid inverter – manufacturer site
- 5kW AC-coupled solar (Enphase micro-inverters)
- 3kW DC-Coupled solar (To Sol-Ark MPPT)
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Application:
- Time-of-Use optimization
- Recharge with solar only
- Zero grid draw 5pm–8pm
- Whole-home backup
📺 Watch the Full DIY Build Series
This six-part video playlist documents the entire build from start to finish—designing, assembling, and commissioning the system in Joshua Tree. Follow along to see each step in detail.
📌 Subscribe to SolarJoeJoe on YouTube for future DIY builds and solar tips!
🧰 Step-by-Step Build
Design it First
Final Layout
Wall Planning
Cell Assembly: Compression Plates First
Progress Update
BMS Configuration
Sol-Ark Programming
Final Install Photos
💡 Why This Matters
- Lower utility bills by avoiding peak rates
- Charge batteries with solar only or when utility rates are low
- Whole home backup with Sol-Ark
- Built using parts available on OGSolarStore.com
⚡ Want to Save Even More?
This follow-up video shows how we fine-tuned the Time-of-Use settings on the Sol-Ark inverter to slash energy bills even further. If you’ve already installed your system, this is a must-watch!
Inspired to build your own system? You can find all the same components—from REPT cells to bus bars and compression plates—right here on OGSolarStore.com. Let’s build something smart together. 🛠️
1 comment
The link to purchase custom bus bars for the 16S2P configuration appears unavailable. Could you please provide the correct link so I can buy them?