Choosing the Right Battery Storage for Your Energy System
Whether you’re installing a new solar system or upgrading an existing one, battery storage is a vital component. But there’s a crucial distinction between off grid battery banks and on grid hybrid battery banks. Each serves a different purpose and operates in unique ways depending on the type of system it’s paired with.
This article will break down the major differences between off grid and on grid battery systems, helping Queensland homeowners and businesses make informed decisions. We will also look at popular stackable lithium options like BYD and Pylontech, and discuss why not all batteries are created equal.
What Is an Off Grid Battery Bank
An off grid battery bank is designed to be the primary source of stored energy for properties with no grid connection. It stores solar energy or generator power and supplies electricity around the clock, often powering an entire home, farm, or business. In these systems, battery reliability and discharge depth are critical.
Off grid systems require battery banks with
- Deep cycle capabilities (regularly discharged 80% or more)
- High throughput and lifespan (5000+ cycles)
- Compatibility with off grid inverters like Victron or Selectronic
- Serviceability and modular expandability
Popular options include
- BYD B Box Premium LVL and LVS series
- Pylontech US2000 and US5000 modules
These batteries are stackable, scalable, and proven in harsh Australian conditions.
What Is an On Grid Hybrid Battery Bank
An on grid battery system is designed to work with a home that is still connected to the grid. These systems allow for solar self consumption, time of use energy shifting, and grid backup during outages.
While they offer some blackout protection, they are not always suitable for prolonged outages or standalone operation unless designed to do so.
Key characteristics of on grid battery systems
- Limited discharge during outages unless configured for backup
- Paired with hybrid inverters like Fronius Gen24, Sungrow, or Tesla Powerwall
- Optimised for feed in and consumption, not total energy independence
Not all on grid systems can go off grid without major hardware and design upgrades.
Why BYD Is Ideal for Off Grid Battery Systems
BYD is a global leader in lithium battery manufacturing and an excellent fit for off grid energy storage in Australia. Unlike some battery systems that are built primarily for hybrid applications, BYD’s Premium LVL and LVS ranges are fully compatible with off grid inverter brands like Selectronic, Victron, and SMA.
Key benefits of BYD in off grid applications
- Native compatibility with off grid inverter systems
- Modular stackable design – expand as your needs grow
- Lithium Iron Phosphate LFP chemistry – safe, stable, long life
- Strong local warranty and support in Australia
- Seamless generator integration when paired with Selectronic SP Pro
These features make BYD battery systems a smart investment for rural Queensland properties looking for long term energy security.
BYD and Pylontech Two Versatile Options
Both BYD and Pylontech offer stackable, modular battery options compatible with off grid and hybrid inverters, including
BYD
- Excellent performance in off grid systems
- Compatible with Selectronic, Victron, SMA, and Fronius
- Robust warranty and local support
- Modular design for easy expansion
Pylontech
- Cost effective, proven LFP chemistry
- Compatible with Victron, Growatt, and more
- Modular design ideal for residential and small commercial setups
These brands offer excellent compatibility across both off grid and on grid applications but must be configured appropriately.
Final Thoughts Which One Do You Need
If you’re living beyond the reach of the grid, you will need an off grid battery system with high storage, deep discharge capability, and generator integration. Systems using BYD or Pylontech batteries with Selectronic or Victron inverters are excellent choices for performance and long term serviceability.
If you are still connected to the grid and want to store excess solar, reduce your energy bills, and gain limited backup, an on grid hybrid battery might suit you. Just ensure you understand the limitations around blackout protection and inverter compatibility.
Need help designing a battery system that fits your property We specialise in both off grid and hybrid systems across Queensland. Contact us today for expert advice on battery sizing, inverter selection, and system design.