Tesla
Powerwall 3 Expansion
Battery-only 13.5 kWh unit that stacks onto a Powerwall 3 leader and shares its inverter. Add up to 3 Expansion units per leader.
At a glance
Key specs
- Usable capacity
- 13.5 kWh per unit
- Inverter
- None. Uses the leader Powerwall 3’s integrated inverter for charge control and conversion
- Stacking
- Up to 3 Expansion units per Powerwall 3 leader (adds 40.5 kWh per leader, 54 kWh total with the leader)
- Chemistry
- Lithium iron phosphate (LFP)
- DC voltage
- 52 to 92 V DC, parallel-connected to the leader
- Operating temp
- -4°F to 122°F
- Enclosure
- NEMA 3R, IP67 battery
- Dimensions
- 43.5 in × 24 in × 6.6 in, 261 lb
Warranty
10 years
- Covered under the Tesla Powerwall Limited Warranty, matching the leader Powerwall 3 term
- 70% energy capacity retention guaranteed at year 10
- Requires at least one Powerwall 3 leader on site. Expansion units do not operate standalone
- Transfers to subsequent homeowners with proof of ownership, no fee
- Federal incentive value available through PrimeBid incentive paths (Midas My Incentives and Full Transfer)
Certifications
Tested and approved
UL 1973UL 9540UL 9540A
Resources
Datasheets & downloads
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