Sigenergy SigenStor

Name: Sigenergy SigenStor
Brand: Sigenergy
Availability: InStock

Modular, Future-Proof Energy Storage with EV Charging Built In

5 kWh

Starting Capacity

40+ kWh (modular)

Expandable To

Yes — DC bidirectional V2H

Built-in EV Charger

Get Free Quote 01302 203 755

Sigenergy SigenStor battery storage system

About the Sigenergy SigenStor

The Sigenergy SigenStor is the most future-proof battery on the market. Start with 5 kWh and expand in 5 kWh modules as your needs grow — no need to replace the inverter. Its standout circular LED display shows battery status at a glance, and it's the only residential battery with a built-in bidirectional DC EV charger.

Key Features

Start small — expand later with plug-and-play 5 kWh modules

Built-in bidirectional DC EV charger — V2H capable

Lifetime warranty on batteries (industry first)

Circular LED display shows charge level at a glance

Reached $100M annual sales faster than any energy brand in history

V2H: your car battery can power your house

Ideal For

EV ownersFuture-planning householdsThose wanting gradual investmentTech-forward homeowners

Battery Storage FAQs

Do I need a battery with my solar panels?

While solar panels work without a battery, adding one significantly increases your energy savings. Without a battery, you only use solar electricity when the sun is shining and your panels are generating. A battery stores excess daytime energy for use in the evenings when electricity is most expensive. Most households use 50–70% of their solar generation with a battery, compared to 30–40% without one.

How long do solar batteries last?

Modern lithium-ion solar batteries typically last 10–15 years or more. The batteries we install from Tesla, Hanchu, Fox ESS, and Sigenergy are designed for 6,000–10,000 charge cycles, which translates to 15–25 years of daily use. Our lifetime warranty on batteries gives you complete peace of mind.

Can a solar battery power my home during a power cut?

Yes, if you have a hybrid inverter and battery system. During a power cut, a hybrid system can disconnect from the grid and power your essential appliances using stored battery energy. Not all systems offer this — it depends on the inverter type. Our team designs systems with backup capability if this is important to you.

What size battery do I need?

Battery size depends on your energy usage and solar panel system. A typical UK household uses 8–10kWh per day. A 5kWh battery covers evening usage for most smaller households, while a 10–14kWh battery provides more independence and better backup during outages. Our free survey includes an analysis of your energy usage to recommend the right battery size.