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GrowattARK 20.4H-A1

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The Growatt ARK 20.4H-A1 is a home battery with cell chemistry LFP and warranty 10 years.¹

Last updated: 29 September 2026 Technical specifications Rules in Ireland ⇄ Compare this model

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Nominal capacity: 20.48kWh¹
Cell chemistry: LFP¹

Manufacturer data
Warranty: 10years¹

Manufacturer data
Expandable up to: 25.6kWh¹

Manufacturer data
Depth of discharge: 90%¹

Manufacturer data

Rules in Ireland

SEAI home battery grant

Unknown

A €600 grant for home battery storage systems was announced on 29 September 2026 and opens from 6 October 2026, subject to final implementation arrangements. Check SEAI for the detailed conditions before applying.

Technical specifications

General
Cell chemistry	LFP¹
Performance
Nominal capacity	20.48 kWh¹
Smallest configuration	7.68 kWh¹
Expandable up to	25.6 kWh¹
Efficiency
Depth of discharge	90 %¹
Dimensions & weight
IP rating	IP65¹
Min. operating temperature	-10 °C¹
Width	650 mm¹
Height	1,625 mm¹
Depth	260 mm¹
Weight	226 kg¹
Warranty & lifespan
Warranty	10 years¹

Manufacturer documentation

Product page (latam.growatt.com)
Datasheet / specifications — ARK HV Battery System Datasheet – 2023 (en.growatt.com, PDF)

External links to Growatt's official website. The manufacturer may change or move documents; where they differ, the manufacturer's latest version applies.

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Frequently asked questions

Which cell chemistry does the Growatt ARK 20.4H-A1 use?

The cell chemistry of the Growatt ARK 20.4H-A1 is LFP.¹

What is the warranty of the Growatt ARK 20.4H-A1?

The warranty of the Growatt ARK 20.4H-A1 is 10 years.¹

Sources

ARK HV Battery System Datasheet, 2023 — SHENZHEN GROWATT NEW ENERGY CO.,LTD. · accessed 1 Oct 2026
SEAI home battery grant — Sustainable Energy Authority of Ireland (SEAI)

Key figures