Where You Can Safely Install a Home Battery
Where you place a home battery is not a design choice — it’s a compliance decision. Incorrect placement can void warranties, fail safety inspections or even create hazards. The rules are strict in Australia under AS/NZS 5139:2019 and AS/NZS 3000:2018. We will walk you through exactly where batteries can and cannot go, with real limits you must respect.
Standards & Definitions
Battery installation locations are governed by:
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AS/NZS 5139:2019
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AS/NZS 3000:2018
Those standards set restricted locations (no-go zones) and rules around habitable rooms.
A habitable room is any room used for normal living: bedroom, lounge, dining, kitchen, study, playroom, etc. A garage used as a workspace or lounge may also count.
A restricted location is an area where a battery must not be installed under the rules.
Restricted Locations
According to GSES, batteries cannot be placed in:
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Within 600 mm of any exit or entry (including garage doors)
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Within 600 mm of any vertical side of a window, or ventilation opening into a habitable room
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Within 600 mm of any appliance
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900 mm below those appliances, windows or ventilations
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Inside ceiling spaces
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In wall cavities
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On roofs, unless explicitly allowed by manufacturer
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Under stairways
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Under access walkways
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In evacuation or escape routes
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Inside a habitable room
For locations near a garage door: in states other than NSW, if a person can enter or exit the garage at least 900 mm from the battery, the battery may be installed closer than 600 mm to the door.
Habitable Rooms
Rooms where people live or spend time (bedrooms, living rooms, kitchen, etc.) are considered habitable. Batteries should not be installed there. If the battery is adjacent to a habitable room (sharing a wall), extra protection is required.
Acceptable Locations & Safe Options
Good places include:
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Outdoor walls (with shading or under eaves)
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Garages, laundries or storage rooms (if clearances met)
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Ancillary buildings or sheds (provided distance to switchboard, cable length, voltage drop, clearance rules are observed)
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A wall adjacent to a habitable room, only if you insert a proper non-combustible barrier
Batteries should be positioned so that installer and occupants are not in harm’s way in a fault scenario.
Non-Combustible Barriers
If the battery shares a wall with a habitable room or staircase:
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Use materials like brick, concrete, compressed cement sheeting, or tiles
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The barrier must extend 600 mm each side, and 900 mm above the battery
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It must wrap around corners or ceilings if needed
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This barrier ensures that if the battery fails, the habitable space is protected
Outdoor Installation Considerations
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Do not expose the battery to direct sunlight
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Use the southern wall (in the southern hemisphere) or under eaves or a shading cover
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Always maintain minimum vertical clearance (900 mm above)
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Ensure the cabinet or housing meets manufacturer’s thermal specs
Frequently Asked Questions
Can I install a battery in my garage?
Yes, if it is not inside a habitable room, and all clearance rules (exits, windows, walls) are met.
What if I share a wall with a bedroom?
You must put a certified non-combustible barrier extending 600 mm to sides and 900 mm above the battery. It must wrap corners or ceilings if adjacent.
What clearance do I need around the battery?
You need 600 mm clear to exits, windows, appliances, and 900 mm vertical clearance below or above restricted zones. Also maintain manufacturer’s clearance zones (often 200–300 mm around sides). GSES says those manufacturer zones are mandatory. GSES
Does distance to switchboard or cable sizing matter?
Yes. If you install the battery far from switchboard, your cables may need upsizing to avoid voltage drop. That adds cost and complexity.