Battery Only!

The Customer’s Goals

Our client wasn’t looking to add solar panels, but they wanted to:

• Charge their batteries on cheap, off-peak tariffs and use the stored energy during expensive peak hours.
• Gain the security of off-grid backup power in the event of a power cut.
• Add an EV charger to make the most of smart tariffs and stored energy.

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The Equipment

We worked with two trusted suppliers to put together the system:

• Energy Monkey – Victron MultiPlus-II inverter/charger and Victron EV Charger.
• Lynx Power – Gobel Power GP-SR1-PC200 Premium batteries.

The final system included:

• Victron MultiPlus-II 8 kVA inverter/charger – providing seamless switchover, off-grid operation, and grid charging.
• 2 × Gobel GP-SR1-PC200 Premium batteries – 16.5 kWh each, giving 33 kWh of storage with strong discharge capacity.
• Victron EV Charger – enabling smart and reliable single-phase EV charging.
• Victron Lynx Distributor – for tidy, fused DC busbar connections.

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Smooth Installation Process

Our process was simple and efficient:

1. Site Visit & Agreement – we met the customer onsite, discussed requirements, and agreed a price the same day.
2. Procurement – materials were purchased immediately through our suppliers.
3. Design - AutoCAD design with strong customer liaison for the perfect layout.
4. Installation – we returned to site and completed the full installation in just two days.

To ensure long-term safety and ease of maintenance, we also rewired the supply into a dedicated distribution board. This included a bypass switch, allowing the inverter to be safely isolated for servicing while the property remains supplied from the grid.

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Why This System Works

• Lower Energy Bills: By charging at cheap off-peak rates and using stored energy during the day, the customer cuts their electricity costs dramatically.
• Backup Power: The Victron inverter ensures continuity during power cuts, keeping the home supplied.
• EV Integration: The Victron EV Charger links directly with the system, letting the customer charge their car using stored off-peak energy.
• Neat & Reliable: With tidy cabling, AC/DC separation, and high-quality components, the system is built for long-term reliability.
• Future-Ready: Even without solar today, the system can easily be expanded to integrate PV in the future.

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Summary

• 8 kVA Victron MultiPlus-II inverter/charger
• 33 kWh Gobel LiFePO₄ battery storage
• Victron EV Charger
• Dedicated distribution board with bypass switch
• Installed in just two days

This project shows how battery storage isn’t just for solar homes, it’s also a smart choice for customers on time-of-use tariffs who want to cut bills and gain resilience with a professional, future-proof installation.