Honest guides to plug-in batteries for UK homes

plug-in solar battery · checked 2026-09-03

EcoFlow STREAM 5000

plug-in solar battery5.02 kWhplug-inbackup

A 5 kWh solar battery for balconies and gardens: panels plug straight in, it stores sunshine by day and covers the evening, and it can charge on cheap overnight power. EcoFlow insists on a qualified electrician and forbids feeding power in through a household socket.

EcoFlow STREAM balcony solar battery
Usable capacity5.02 kWh (5,024Wh, fully usable)[1]
OutputUp to 3,000W into the home · 3,600W backup sockets[1]
Solar inputUp to 5,000W of panels across 4 solar inputs[1]
ChemistryLFP lithium: long life, very stable[1]
Cycle life10,000 charges (maker claim)[1]
Warranty10 years[1]
Backup powerYes. runs appliances from its own backup sockets[1]
Plug-inMust be connected by a qualified electrician; must NOT feed power in through a household socket[1]
ExpandableYes. up to 15 kWh with 2 add-on batteries; systems up to 90 kWh[1]
Weight and size45.4 kg (about 30 × 30 × 49 cm)[1]
DurabilityWeatherproof (IP65) · works from −20°C to 55°C[1]
Price£1,599 (was £1,799); £1,499 launch price with £9.90 deposit: currently out of stock[1]

UK rules check

Rules checked. Maker's UK position verified: qualified electrician required, socket feed-in forbidden. Grid-approval paperwork still being checked.

Checked 2026-09-03

Price snapshot

£1,599 (was £1,799)

Out of stock; shipping around late October. £1,499 launch price available with a £9.90 deposit.

Source: EcoFlow UK official store · checked 2026-09-03

Automatic cheap/peak shifting through the EcoFlow app with a smart meter. Works with third-party panels via standard solar connectors. Single-phase grid connection.

Who it suits

Who should skip it

Good points
  • Strong package: 5 kWh, 3,000W output, 5,000W of panels
  • Panels plug in directly, no extra boxes
  • 10,000-charge battery with 10-year warranty
  • Weatherproof for outdoors
Watch out for
  • Electrician required: not a true plug-in despite the marketing
  • Socket feed-in explicitly forbidden by the maker
  • Out of stock at the time of checking
  • 45 kg: needs its final spot planned

Common questions

Can I plug the STREAM 5000 into a wall socket?

No, and EcoFlow says so explicitly. It must be connected by a qualified electrician and must not feed power in through a household socket. This is the single most important fact about this product.

What is the difference between the STREAM 5000 and the STREAM AC 5000?

The STREAM 5000 (£1,599) takes solar panels directly. The AC 5000 (£1,499) is the battery-only version for charging from the grid. Both expand to 15 kWh with add-on batteries.

Worth comparing with

Anker SOLIX Solarbank 4 E5000 Pro Fox ESS MiniQube

Sources

  1. EcoFlow UK — STREAM 5000 product page (size, output, solar, price, stock, electrician rule)checked 2026-09-03

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