Sigenergy
Sigenergy SigenStor
8kWh module
A modular 5-in-1 system (inverter, battery, energy management and optional EV DC charging) that scales to 80kWh, with a standout 15-year warranty.
4.7 ~£6,500
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Home Battery Storage
A home battery stores cheap off-peak or solar electricity to use at peak times. We compare the best UK systems on usable capacity, power, backup and cost — whether you have solar or not.
No solar? A battery can still pay.
On a time-of-use tariff (e.g. Intelligent Octopus Go ~7p overnight) a battery charges cheap
and powers your home at peak — saving roughly £150–£300 a year. Standalone batteries are also
0% VAT through 2027. How it works →
All-in-One Home Batteries
Compare all-in-one home batteries in the UK — Tesla Powerwall 3, GivEnergy, Sigenergy SigenStor — by usable kWh, power, backup, warranty and cost.
4 compared →Modular Battery Storage
Compare modular home batteries in the UK — Pylontech, Fox ESS, BYD Battery-Box, SolaX — by usable kWh, expandability, power and warranty.
4 compared →Top-rated batteries
Tesla
Tesla Powerwall 3
PW3
13.5kWh battery with a built-in solar inverter and class-leading continuous output, including whole-home backup.
4.4 ~£7,500
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BYD
BYD Battery-Box Premium HVS
2.56kWh modules
A widely-installed modular high-voltage battery that stacks from 5.1kWh to ~22kWh, paired with a third-party hybrid inverter.
4.3 ~£4,500
View specs & review