Best Home Battery UK 2026
We compared the most popular UK home batteries on price, total cost, payback period, and ease of installation. Here are our top picks for 2026.
Our Top Picks
Based on total cost, payback period, and ease of use.
Marstek Venus-E 10.24 kWh
£2,499, plugs in with no installation needed and stores enough for a typical evening. Output is 800 W by default, up to 2.5 kW with network approval. Estimate your payback in the calculator.
Fox Mini Qube 2.11–10.55 kWh
Charges from a standard socket and runs suitable appliances from its own outlet. Household-circuit use is a separate route.
Tesla Powerwall 2
5 kW continuous output for whole-home backup. Best if you need to run high-draw appliances simultaneously.
Full Battery Comparison
All prices include VAT. Installation costs are estimates based on UK averages.
Fox Mini Qube
- Stack modules as you go
- AC or Hybrid version
- Smart meter optional upgrade
Marstek Venus-E
- Fixed all-in-one unit
- Up to 15.36 kWh
- Smart meter optional upgrade
AEG plug-in battery
- Reserve now, pay on dispatch
- Solar capture needs a smart meter
Tesla Powerwall 2
- High power output
- Brand recognition
- Backup power capable
GivEnergy 9.5 kWh
- Good app ecosystem
- UK company
- Scalable
Sunsynk 5.12 kWh
- Hybrid inverter included
- Solar-ready
- Competitive pricing
How to Choose the Right Home Battery
Assess your daily usage
Check your smart meter or energy bill. The average UK home uses 8–10 kWh per day. Match your battery capacity to your evening/overnight consumption — typically 4–8 kWh.
Check your tariff
A time-of-use tariff (Economy 7, Octopus Go, Octopus Flux) is essential for maximum savings. The bigger the difference between peak and off-peak rates, the more you'll save.
Decide: plug-in or hardwired?
Plug-in batteries (plug-in) cost less, install in minutes, and suit most homes. Hardwired batteries (Tesla, GivEnergy) provide higher power output but cost £1,500–5,000 more when you include installation.
Consider solar integration
If you have or plan solar panels, check compatibility. plug-in home batteries work with any solar setup. To automatically store excess generation you'll need the smart meter (CT clamp) — included with Pro Install, or available as a separate electrician-fitted add-on for self-install.
Calculate payback
Use our savings calculator to get a personalised payback estimate based on your tariff, usage, and battery size.
How much could you save?
Use our free calculator to see your savings in 30 seconds.
Frequently Asked Questions
Get in Touch
Not sure which battery is right for you? Call or message us and we'll help you choose.
Got questions? Call us
+44 7782 218686Or tap the chat icon bottom-right — we'll get straight back to you.