GivEnergy All in One 2 (GIV-AIO-13.5)

By Daan Haket · researched and written with an AI assistant · updated 26 October 2026

All in One 2 is sold in several AC output versions. A storage capacity label does not tell you which inverter version or optional MPPT hardware the installer has priced.

Research from manufacturer documents, not a hands-on test. Values and missing details are kept separate below.

What matters on your quote

Ask for the full model suffix, optional solar-input hardware and Gateway 2. The manufacturer’s capacity headline is retained as stated; we have not silently renamed it usable energy.

• The timed off-grid peak is given in kVA. It is not the same unit as real power in kW.
• The manufacturer product page was rechecked on 26 October 2026. Specify the exact rated-power version and obtain the full UK warranty; the headline year count is a product claim.

At a glance

Not in the documents we checked so far: round-trip efficiency, warranty throughput / cycles, capacity at end of warranty, UK list price.

Ask the installer before you sign

• Is the usable capacity on the quote the figure above, or a nominal one?
• Can it charge fast enough to fill in your cheap window? Charging power × hours of the window is the most it can take in.
• Is any equipment needed for backup in a power cut included in the price?
• Does it work alongside your current solar inverter, or replace it?
• Which warranty conditions apply in the UK, and what do you have to do to keep them?

Will it pay back for you?

Try it in the calculator →

Usable system capacity is not established here, so the calculator opens without a battery-capacity preset. Enter the usable capacity from your installer’s quote. Add your own installed price and tariff. If the datasheet does not state a round-trip efficiency, use your installer’s figure.