Types of solar battery systems

Battery systems can be categorised as separate components, semi-integrated (also known as hybrid) or fully integrated (also known as all-in-one). Sometimes it becomes confusing since some manufacturers may classify their system as all-in-one, but it doesn’t include the solar inverter. Some all-in-one systems can also be modular – the batteries, charge controllers, car chargers are added into a neat stack, so the components can easily be replaced.

Modular all-in-one appears to be where many companies are moving towards, since you have the benefit of a tidy expandable battery pack along with the benefits of easily replaceable parts. SigEnergy, Fox, MyEnergi and BYD already have modular all-in-one systems. SolarEdge are launching one in 2026.

See below for the advantages and disadvantages of hybrid, all-in-one and modular all-in-one home battery systems.

Types of Battery Systems - Separate Components

  • Components are easily replaced.

  • More complex design, installation and maintenance.

Types of Battery Systems - Hybrid

  • Some hybrid systems work with many battery manufacturers making the system more resilient e.g Sunsync, Solis, Goodwe.

  • Lowest cost option.

  • Not as aesthetically pleasing as all-in-one or all-in-one modular.

Types of Battery Systems - All-in-one

  • Aesthetically pleasing and simple to design and install.

  • The entire device needs replacing if a single electrical component fails in the inverter, charge controller, BMS or any battery cell. Arguably not an environmentally friendly solution.

Types of Battery Systems - All-in-one Modular

  • Flexible design and easy upgrade/repair AND aesthetically pleasing (especially when expanding the battery capacity).