How-to · UK domestic

Installing a GivEnergy All-In-One home battery: what the job involves

The GivEnergy All-In-One is the UK's best-selling AC-coupled home battery. It packs a 3.6 kW or 5 kW inverter and up to 13.5 kWh of storage into a single wall-mounted unit, and it works whether you have solar panels or not. The AC wiring is notifiable Part P work that needs a registered electrician, but knowing what a proper installation looks like helps you ask the right questions, pick the right installer, and check the paperwork is correct when the job is done.

Video reference. "GivEnergy All In One (AIO) Battery Installation" is from Jellyfish Solar, a UK solar and battery installer. The video follows a real installation of a GivEnergy 13.5 kWh AIO from mounting and cabling through to Gateway setup and commissioning on the GivEnergy app, showing the AC-side wiring at the consumer unit end and inside the unit itself.

This is not a DIY job. The supply cable run from the consumer unit is a new dedicated circuit. That is notifiable work under Part P of the Building Regulations and must be carried out, tested and certified by a registered electrician. GivEnergy also require the unit to be commissioned by a GivEnergy-approved installer to validate the product warranty. The information below explains what a correct installation looks like so you can make an informed choice of installer and verify the certificate paperwork afterwards.

1. Assessing the consumer unit and available supply capacity

Before ordering the unit, the installer checks whether the consumer unit has a spare way for the new circuit. A clamp meter reading on the tails or the main isolator during a busy early evening gives a realistic picture of peak load. Most UK homes on a 100A single-phase supply can comfortably accommodate a GivEnergy 3.6 kW AIO, which draws up to 16A when charging. The 5 kW model draws up to 22A, so if the home already runs an EV charger and has electric heating, a load calculation matters.

The installer also checks the earthing arrangement. Most UK homes use PME (TN-C-S). The GivEnergy AIO does not require a Type B RCD in the way an EV charger does, so a plain MCB on a board that already has full RCD protection is usually correct for the AIO circuit.

2. Choosing and preparing the installation location

The All-In-One must be fixed to a solid wall in a dry, well-ventilated space. A utility room, garage or dedicated plant room all work well. The unit needs 200 mm clearance on all sides for air circulation and heat dissipation, and must not be installed in a location where it is exposed to direct sunlight or temperatures below 0°C or above 50°C.

The position is also influenced by how the AC cable will reach it from the consumer unit. A short cable run is cheaper and keeps volt drop within BS 7671 limits without going to a larger conductor size. Mark the wall bracket position carefully before drilling: GivEnergy AIO units are heavy, and a poorly anchored bracket is a serious risk.

3. Mounting the All-In-One unit

The installer fixes the wall bracket using the fixing template from the installation manual, checking it is perfectly level in both planes. Wall anchors must be rated for the weight of the unit: the 9.5 kWh model weighs around 58 kg and the 13.5 kWh model around 70 kg. Two people are needed for the lift. Once the unit is hung on the bracket, it locks into place and the base fixings are tightened.

The AC supply cable entry and communication cable entry are made through the cable glands at the base of the unit. These glands must be correctly tightened to maintain the unit's IP rating in damp locations such as a garage.

4. Running and connecting the AC supply cable

Standard installations use 4 mm two-core and earth for the 3.6 kW model on cable runs up to around 20 m from the consumer unit. The 5 kW model uses 6 mm cable. Longer runs or cable routed through insulated roof voids may need a larger conductor to stay within the 3% volt-drop limit in BS 7671 Regulation 525.

Inside the AIO terminal block, connections are made to the torque values given in the GivEnergy installation manual. This is important: a loose terminal on a battery circuit can arc and cause a fire. The installer verifies polarity and continuity of the earth conductor before proceeding.

5. Fitting the MCB at the consumer unit

The supply cable connects to a 20A MCB for the 3.6 kW model, or a 32A MCB for the 5 kW model, in the consumer unit. If the board already provides full RCD protection via RCBOs throughout, a standard MCB is all that is needed on this circuit. If the board is an older split-load type, the installer checks that the AIO circuit sits on the RCD-protected side.

All MCB terminals are torqued before the board cover is replaced. The installer checks polarity and performs a continuity test on the new circuit before closing the board.

6. Installing and pairing the Giv-Gateway

The Giv-Gateway sits on the wall next to the AIO and connects to the GivEnergy cloud via the home Wi-Fi network or a fixed Ethernet cable. It allows remote monitoring, tariff-based scheduling and solar CT clamp integration. The communication cable runs between the AIO and the Gateway via a dedicated port, and the Gateway is then registered to your GivEnergy account through the portal or the mobile app.

The CT clamp, if included, clips around the grid import conductor inside the consumer unit or at the meter. It tells the GivEnergy system how much power is being imported so it can prioritise charging from surplus solar generation rather than the grid. Fitting the CT clamp inside the consumer unit is additional work inside a live board and must be done with the appropriate precautions.

7. Commissioning on the GivEnergy app and notifying Part P

Once wiring is complete and dead tests pass, the installer powers up the AIO and steps through the commissioning wizard in the GivEnergy app. Charge and discharge schedules are set to match the energy tariff: Agile Octopus, Octopus Go, Economy 7 and other time-of-use tariffs are all supported. The installer runs a test charge and discharge cycle to confirm everything operates as expected before leaving site.

The installation is then notified to the DNO (within 28 days for G98; pre-approved for G99) and through the installer's Part P registered competent person scheme. You should receive an Electrical Installation Certificate and a G98 or G99 notification letter. Keep both with your property documents, particularly if you plan to add solar panels or sell the property in future.

Stop and call an electrician if: the AIO shows a fault code on the display or app after commissioning, the MCB or RCD on the new circuit trips repeatedly, the unit feels unusually warm during a charge cycle, the battery capacity appears to degrade significantly within the first few weeks, or you did not receive an Electrical Installation Certificate after the work was completed.

When to call us

Richard installs GivEnergy All-In-One batteries and other home energy storage systems across east Kent, completing DNO notification, Part P certification and commissioning on the same day. Get in touch for a free fixed quote.

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Richard installs GivEnergy and other AC-coupled batteries across Sandwich, Deal, Dover, Ramsgate and Canterbury. Free fixed quotes, full certification, same-day commissioning.

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