Free Installation Available Included across eligible solar battery kits

Smart Battery Storage,
Installed For Free

Lower your energy bills
Use stored energy day or night
Protect against rising energy costs
Sell excess energy back to the grid

Shop Battery Storage Kits Get Installation Advice
Buy online or speak to our team before choosing your kit.
Designed by experts
Systems specified by off-grid and battery specialists.
Free installation
Available across eligible solar battery kits.
Quote support
Get help choosing the right setup for your home.

Battery Storage Kits With Free Installation Available

Shop complete battery storage kits online, or speak to our team if you need help choosing the right setup for your home.

View The Full Battery Storage Collection
Not sure which kit is right? Speak to our team before ordering and we’ll help you choose the right setup.
Get Installation Advice
Need help choosing?

Buy online, or let our team check the right setup first.

Not every home needs the same battery size. If you already have solar, want backup power, or need installation included, we can help you choose confidently before you order.

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Why buy from Callidus?

Battery storage with installation, made simple

We help customers buy the right kit, understand the installation route and get support beyond checkout.

1

Expert system design

Systems specified by solar, off-grid and battery specialists who understand real-world installs.

2

Free installation available

Eligible kits in this collection include access to free installation options.

3

Support before you buy

Get help with sizing, compatibility, existing solar systems and installation questions.

4

UK stock and delivery

Shop complete kits and components backed by UK-based technical and customer support.

How it works

Two ways to buy your battery storage system.

Order directly if you know what you need, or use the advice route if you want confirmation first.

Route 1

Shop online

  1. Choose a battery storage kit.
  2. Check the product details and options.
  3. Order online and we’ll process your kit.
Shop battery kits →
Route 2

Get advice first

  1. Tell us about your home or existing solar system.
  2. We check sizing, compatibility and install options.
  3. You get a clearer route before you commit.
Get installation advice →
Why add battery storage?

Use more of the energy your home already produces.

Use more solar

Store excess solar generation instead of sending it straight back to the grid.

Reduce peak-time use

Use stored energy when your home demand is higher or grid electricity costs more.

Add resilience

Build a system that can support backup power requirements where the kit and setup allow.

Export surplus energy

Sell excess energy back to the grid where your tariff, meter and system setup allow.

Questions before you buy?

Battery storage FAQs

Is installation really free?

Free installation is available across eligible solar battery kits. Use the form if you want us to confirm your route before ordering.

Can I buy a kit directly online?

Yes. Confident buyers can shop the kits directly. If you are unsure on sizing, compatibility or installation, request advice first.

Can I add a battery to existing solar?

In many cases, yes. The right setup depends on your existing inverter, meter, wiring and what you want the system to do.

Can I sell excess energy back to the grid?

Often yes, but this depends on your energy tariff, metering and final system setup.

What happens after I request advice?

Our team reviews your enquiry and helps you understand the most suitable kit, installation options and next steps.

Ready to store more of your solar energy?

Shop complete battery storage kits online, or speak to our team if you’d like help choosing the right setup.

Shop battery storage kits Get installation advice

Get Installation Advice Or A Tailored Battery Quote

Tell us a little about your home, existing solar setup and what you want the battery system to achieve. Our team can help with kit selection, compatibility, installation options and next steps.

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Case Studies