South West Tech primarily installs Pylontech and Deye battery systems because they offer a strong combination of reliability, safety, scalability and value.

Both brands use Lithium Iron Phosphate (LiFePO₄) battery technology, which is widely regarded as one of the safest and longest-lasting battery chemistries available. Their modular design also allows battery capacity to be expanded over time if your energy needs increase.

The right battery ultimately depends on your home's energy usage, whether you're grid-connected or off-grid, and whether backup power is important, so the most suitable solution can vary from one property to the next.

Yes. In most cases, a battery can be added to an existing solar system, so you don't need to install one when your solar panels are first fitted. Whether it's possible depends on the age of your system, the type of inverter you have and whether your existing equipment is compatible with battery storage.

Some systems can have a battery added with minimal changes, while others may require a new hybrid inverter or additional equipment. If you're considering a battery in the future, it's worth mentioning it when installing your solar system, as choosing compatible equipment from the outset can make upgrading simpler and more cost-effective.

Yes. South West Tech installs battery systems for both grid-connected and off-grid properties, from residential homes through to large-scale off-grid power systems for rural stations, commercial operations and remote sites.

We have extensive experience designing and installing complete off-grid solar and battery systems that provide reliable, independent power where the electricity grid isn't available. Whether you need backup power for your home or a large off-grid solution for a remote property, we can tailor a system to suit your energy requirements.