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

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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

Up to 15-year warranty on batteries

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 battery systems we install from Tesla, Fox ESS, Sigenergy, and Hanchu (hybrid inverter + battery) are designed for 6,000–10,000 charge cycles, which translates to 15–25 years of daily use. Our up to 15-year 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.