Top pick
EcoFlow
PowerOcean Home Battery System
Pairs with rooftop solar to power your whole home through a grid outage.
Fridge-freezer: ~5d 22h
4.6 From £4,500 (installed)
Top pick
4.4 £1,400 – £1,900
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Jackery
Explorer 2000 Plus
An expandable solar generator that's ideal for backing up essential home circuits.
Output
3,000W
Battery
2,042Wh
Chemistry
Lithium
Can it run…?
Each device on its own, with typical UK wattages.
Wi-Fi router + fibre box
~3d 15h
CPAP machine
~1d 19h
Fridge-freezer
~1d 5h
Gas boiler (pump & controls)
~14h 28m
LED lights (6 bulbs)
~1d 11h
55" TV
~17h 21m
Kettle
~35 min
Runtime estimatordrag to set your load
LOAD
—
RUNTIME
—
Key specs
Battery capacity2042Wh (expandable)
AC output3000W (6000W surge)
ChargingSolar panels, AC wall, or car
Recharge timeApprox. 2 hours (AC, to 80%)
Ideal forFridge + lighting + broadband during an outage
Our take
A flexible middle-ground option: powerful enough to run a fridge and some lighting circuits through an outage, portable enough to also take camping or use as backup for a home office.
Not sure it's big enough?
Power Sizer
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Also in Home & Solar
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Bluetti
AC300 + B300 Home Backup Kit
A modular battery and inverter combo that can power a fridge, router and lighting for days.
Fridge-freezer: ~1d 20h
4.5 £2,200 – £3,000
CyberPower
CP550 Mini UPS for Router & Broadband
Keeps your WiFi router and modem online during short power cuts.
Fridge-freezer: ~47 min
4.2 £45 – £65