13.5 kWh Storage Capacity | Modular Upgrade for Home Battery System | Powerwall 3 Compatible
Expand the capacity of your home energy storage system with the Tesla Powerwall 3 Expansion Pack.
Designed to work seamlessly with the base Powerwall 3 unit, this DC-battery-only add-on increases your usable storage by 13.5 kWh per expansion unit. Ideal for homeowners looking to scale backup power, support larger loads, add EV charging capacity, or future-proof their energy setup.
Per Expansion Unit
Additional storage
Maximum Expansion
Per Powerwall 3
Weatherproof Rating
Indoor/outdoor install
Scale your energy storage up to 40.5 kWh additional capacity without the cost of additional inverters
Adds 13.5 kWh of energy storage per unit when paired with a Powerwall 3, with modular design allowing up to 3 expansion units per leader Powerwall 3.
Works exclusively with Powerwall 3 systems — the expansion unit does not include its own inverter, providing pure storage expansion at lower cost.
IP67 rated for indoor or outdoor installation with robust mechanical design and streamlined integration via the Tesla App.
Adds 13.5 kWh of energy storage per unit when paired with a Powerwall 3, with modular design allowing up to 3 expansion units per leader Powerwall 3 for significant storage growth up to 40.5 kWh additional capacity.
Works exclusively with Powerwall 3 systems — the expansion unit does not include its own inverter, leveraging your existing Powerwall 3's inverter capacity for cost-effective storage expansion.
Provides pure battery storage expansion without the cost of additional inverters, making it the most economical way to increase your home's energy storage capacity. Ideal for homeowners with an existing Powerwall 3 who need more storage without purchasing a full inverter unit.
Perfect for properties preparing for higher energy loads such as EV chargers and heat pumps, or for extending backup power duration during longer outages.
IP67 rated for indoor or outdoor installation with robust mechanical design that matches the durability and weather resistance of the main Powerwall 3 unit. Compact dimensions (43.5 in × 24 in × 6.6 in) and 242.5 lb weight allow flexible installation in various locations.
Streamlined integration via the Tesla App — manage stored energy, monitor system status, and schedule backup or self-consumption modes with the same intuitive interface as your main Powerwall 3.
Adds 13.5 kWh of energy storage per unit when paired with a Powerwall 3, with modular design allowing up to 3 expansion units per leader Powerwall 3 for significant storage growth up to 40.5 kWh additional capacity. Works exclusively with Powerwall 3 systems — the expansion unit does not include its own inverter, leveraging your existing Powerwall 3's inverter capacity for the most cost-effective storage expansion available. Ideal for homeowners who need more storage without purchasing additional complete Powerwall units.
IP67 rated for indoor or outdoor installation with robust mechanical design that matches the durability and weather resistance of the main Powerwall 3 unit. Compact dimensions (43.5 in × 24 in × 6.6 in) and 242.5 lb weight (261.2 lb with cover & bracket) allow flexible installation in various locations including garages, basements, and exterior walls. Operating temperature range from –4 °F to +122 °F (–20 °C to +50 °C) ensures reliable performance in extreme weather conditions alongside your main Powerwall 3.
Streamlined integration via the Tesla App — manage stored energy, monitor system status, and schedule backup or self-consumption modes with the same intuitive interface as your main Powerwall 3. Certified to UL 1973 and UL 9540 safety standards, ensuring the same level of reliability and safety as Tesla's main energy storage products. Designed specifically for backup power systems requiring longer-duration outages coverage or higher solar self-consumption rates without complex system modifications.
Ideal for properties preparing for higher energy loads such as EV chargers, heat pumps, and additional household appliances that increase energy demands over time. Perfect for homeowners looking to scale backup power, support larger loads, add EV charging capacity, or future-proof their energy setup against rising energy costs and increasing power needs. Enables extended operation during grid outages and maximizes solar self-consumption by storing excess solar generation for use during peak demand periods or nighttime hours.
Perfect for extending backup duration by several hours or adding capacity for one EV charger or heat pump.
• Extended overnight backup
• Single EV charging support
• Moderate solar storage increase
• Basic load expansion
Significant capacity increase at lowest expansion cost, ideal for most residential upgrade needs.
Ideal for whole-home backup extension or supporting multiple high-load appliances and EV chargers.
• Multi-day outage protection
• Multiple EV charging
• Whole-home heat pump support
• High solar self-consumption
Substantial capacity for most energy-independent homes, balancing cost and performance.
Maximum expansion for energy-intensive homes, off-grid capabilities, or commercial applications.
• Extended off-grid operation
• Multiple EVs + high loads
• Small business backup
• Maximum solar optimization
Ultimate storage capacity for the most demanding energy needs and future expansion requirements.
| Energy Capacity | 13.5 kWh per unit |
| Compatibility | Powerwall 3 only |
| Max Expansion Units | 3 per Powerwall 3 |
| Total Max Expansion | 40.5 kWh |
| Inverter | None (uses Powerwall 3) |
| Certifications | UL 1973, UL 9540 |
| Dimensions | 43.5" × 24" × 6.6" |
| Weight (Module) | 242.5 lb |
| Weight (Complete) | 261.2 lb |
| Ingress Protection | IP67 |
| Installation | Indoor/Outdoor |
| Operating Temp | –4°F to 122°F |
| Integration | Tesla App |
| Management | Seamless with Powerwall 3 |
| Monitoring | Real-time status |
| Control Modes | Backup, Self-Consumption |
| Safety Standards | UL Certified |
| Warranty | Matches Powerwall 3 |
Perfect for homeowners with an existing Powerwall 3 who need more storage capacity without purchasing a full inverter unit, providing the most cost-effective expansion path.
Ideal for extending backup power duration during grid outages, ensuring essential systems remain operational for longer periods without grid power.
Excellent for maximizing solar self-consumption by storing excess solar generation for use during peak hours or nighttime, reducing grid dependence.
Perfect for properties preparing for electric vehicle charging, providing additional storage capacity to support EV charging without straining the grid connection.
Ideal for homes with heat pumps, pool pumps, and other high-energy appliances that benefit from additional stored energy capacity for efficient operation.
Excellent for homeowners seeking greater energy independence and resilience against power outages, rising energy costs, and grid instability.
Scale your home energy storage with the Tesla Powerwall 3 Expansion Pack. Add 13.5 kWh of additional capacity per unit, up to 40.5 kWh total, for extended backup power, EV charging support, and maximum solar self-consumption. Seamless integration with your existing Powerwall 3 system through the Tesla App.
13.5 kWh per unit, up to 3 units expansion, IP67 weatherproof, Tesla App integration — the ultimate cost-effective storage expansion for your Powerwall 3 system.
Tesla Powerwall 3 Expansion Pack | 13.5 kWh Storage Capacity per unit | Compatible with Powerwall 3 only | Up to 3 expansion units per system (40.5 kWh total) | IP67 rated for indoor/outdoor installation | Dimensions: 43.5" × 24" × 6.6" | Weight: 242.5 lb (module) | Operating temperature: –4°F to 122°F | UL 1973, UL 9540 certified.
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13.5 kWh Storage Capacity | Modular Upgrade for Home Battery System | Powerwall 3 Compatible
Expand the capacity of your home energy storage system with the Tesla Powerwall 3 Expansion Pack.
Designed to work seamlessly with the base Powerwall 3 unit, this DC-battery-only add-on increases your usable storage by 13.5 kWh per expansion unit. Ideal for homeowners looking to scale backup power, support larger loads, add EV charging capacity, or future-proof their energy setup.
Per Expansion Unit
Additional storage
Maximum Expansion
Per Powerwall 3
Weatherproof Rating
Indoor/outdoor install
Scale your energy storage up to 40.5 kWh additional capacity without the cost of additional inverters
Adds 13.5 kWh of energy storage per unit when paired with a Powerwall 3, with modular design allowing up to 3 expansion units per leader Powerwall 3.
Works exclusively with Powerwall 3 systems — the expansion unit does not include its own inverter, providing pure storage expansion at lower cost.
IP67 rated for indoor or outdoor installation with robust mechanical design and streamlined integration via the Tesla App.
Adds 13.5 kWh of energy storage per unit when paired with a Powerwall 3, with modular design allowing up to 3 expansion units per leader Powerwall 3 for significant storage growth up to 40.5 kWh additional capacity.
Works exclusively with Powerwall 3 systems — the expansion unit does not include its own inverter, leveraging your existing Powerwall 3's inverter capacity for cost-effective storage expansion.
Provides pure battery storage expansion without the cost of additional inverters, making it the most economical way to increase your home's energy storage capacity. Ideal for homeowners with an existing Powerwall 3 who need more storage without purchasing a full inverter unit.
Perfect for properties preparing for higher energy loads such as EV chargers and heat pumps, or for extending backup power duration during longer outages.
IP67 rated for indoor or outdoor installation with robust mechanical design that matches the durability and weather resistance of the main Powerwall 3 unit. Compact dimensions (43.5 in × 24 in × 6.6 in) and 242.5 lb weight allow flexible installation in various locations.
Streamlined integration via the Tesla App — manage stored energy, monitor system status, and schedule backup or self-consumption modes with the same intuitive interface as your main Powerwall 3.
Adds 13.5 kWh of energy storage per unit when paired with a Powerwall 3, with modular design allowing up to 3 expansion units per leader Powerwall 3 for significant storage growth up to 40.5 kWh additional capacity. Works exclusively with Powerwall 3 systems — the expansion unit does not include its own inverter, leveraging your existing Powerwall 3's inverter capacity for the most cost-effective storage expansion available. Ideal for homeowners who need more storage without purchasing additional complete Powerwall units.
IP67 rated for indoor or outdoor installation with robust mechanical design that matches the durability and weather resistance of the main Powerwall 3 unit. Compact dimensions (43.5 in × 24 in × 6.6 in) and 242.5 lb weight (261.2 lb with cover & bracket) allow flexible installation in various locations including garages, basements, and exterior walls. Operating temperature range from –4 °F to +122 °F (–20 °C to +50 °C) ensures reliable performance in extreme weather conditions alongside your main Powerwall 3.
Streamlined integration via the Tesla App — manage stored energy, monitor system status, and schedule backup or self-consumption modes with the same intuitive interface as your main Powerwall 3. Certified to UL 1973 and UL 9540 safety standards, ensuring the same level of reliability and safety as Tesla's main energy storage products. Designed specifically for backup power systems requiring longer-duration outages coverage or higher solar self-consumption rates without complex system modifications.
Ideal for properties preparing for higher energy loads such as EV chargers, heat pumps, and additional household appliances that increase energy demands over time. Perfect for homeowners looking to scale backup power, support larger loads, add EV charging capacity, or future-proof their energy setup against rising energy costs and increasing power needs. Enables extended operation during grid outages and maximizes solar self-consumption by storing excess solar generation for use during peak demand periods or nighttime hours.
Perfect for extending backup duration by several hours or adding capacity for one EV charger or heat pump.
• Extended overnight backup
• Single EV charging support
• Moderate solar storage increase
• Basic load expansion
Significant capacity increase at lowest expansion cost, ideal for most residential upgrade needs.
Ideal for whole-home backup extension or supporting multiple high-load appliances and EV chargers.
• Multi-day outage protection
• Multiple EV charging
• Whole-home heat pump support
• High solar self-consumption
Substantial capacity for most energy-independent homes, balancing cost and performance.
Maximum expansion for energy-intensive homes, off-grid capabilities, or commercial applications.
• Extended off-grid operation
• Multiple EVs + high loads
• Small business backup
• Maximum solar optimization
Ultimate storage capacity for the most demanding energy needs and future expansion requirements.
| Energy Capacity | 13.5 kWh per unit |
| Compatibility | Powerwall 3 only |
| Max Expansion Units | 3 per Powerwall 3 |
| Total Max Expansion | 40.5 kWh |
| Inverter | None (uses Powerwall 3) |
| Certifications | UL 1973, UL 9540 |
| Dimensions | 43.5" × 24" × 6.6" |
| Weight (Module) | 242.5 lb |
| Weight (Complete) | 261.2 lb |
| Ingress Protection | IP67 |
| Installation | Indoor/Outdoor |
| Operating Temp | –4°F to 122°F |
| Integration | Tesla App |
| Management | Seamless with Powerwall 3 |
| Monitoring | Real-time status |
| Control Modes | Backup, Self-Consumption |
| Safety Standards | UL Certified |
| Warranty | Matches Powerwall 3 |
Perfect for homeowners with an existing Powerwall 3 who need more storage capacity without purchasing a full inverter unit, providing the most cost-effective expansion path.
Ideal for extending backup power duration during grid outages, ensuring essential systems remain operational for longer periods without grid power.
Excellent for maximizing solar self-consumption by storing excess solar generation for use during peak hours or nighttime, reducing grid dependence.
Perfect for properties preparing for electric vehicle charging, providing additional storage capacity to support EV charging without straining the grid connection.
Ideal for homes with heat pumps, pool pumps, and other high-energy appliances that benefit from additional stored energy capacity for efficient operation.
Excellent for homeowners seeking greater energy independence and resilience against power outages, rising energy costs, and grid instability.
Scale your home energy storage with the Tesla Powerwall 3 Expansion Pack. Add 13.5 kWh of additional capacity per unit, up to 40.5 kWh total, for extended backup power, EV charging support, and maximum solar self-consumption. Seamless integration with your existing Powerwall 3 system through the Tesla App.
13.5 kWh per unit, up to 3 units expansion, IP67 weatherproof, Tesla App integration — the ultimate cost-effective storage expansion for your Powerwall 3 system.
Tesla Powerwall 3 Expansion Pack | 13.5 kWh Storage Capacity per unit | Compatible with Powerwall 3 only | Up to 3 expansion units per system (40.5 kWh total) | IP67 rated for indoor/outdoor installation | Dimensions: 43.5" × 24" × 6.6" | Weight: 242.5 lb (module) | Operating temperature: –4°F to 122°F | UL 1973, UL 9540 certified.
Your payment details are safe and secure. We accept the following:
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