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Electronics

Tesla Powerwall 2

3 source-linked failure reports. Most reported: Battery failure. Typical failure around 4.6 yr.

Reliability signal — · Insufficient data · data confidence Very Low

2 confirmed failure reports · 1 other

Reliability summary

What is likely to go wrong, when it happens, and how expensive it can be — from source-linked failure reports. Counts are reports in our database, not a population failure rate.

Reliability signal

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2 confirmed failure reports · Insufficient data · Data confidence: Very Low

Need at least 5 confirmed failure-signal reports before showing an A–F grade.

Most common issue
Battery failure
Typical first failure
4.6 yr
Median of confirmed reports with timing
Median repair cost
—
Reported costs only · market varies
Highest reported repair
—
Not a quote · costs differ by country

What breaks?

Failure types

Click a type in the reports section below to filter.

  • Battery failure1 · 50%
  • Overheating1 · 50%

When does it break?

Failure timing

Months after purchase, using reports that included timing.

What does it cost?

Reported repair costs

Distribution of owner-reported repair costs— not a quote or guarantee. Labor and parts prices vary by country.

No reported repair costs yet for this model.

Median months to failure

55.5

Failure reports

2

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Median repair cost

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Still recommend

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% repaired

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% mfr warranty

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% extended warranty

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% support helpful

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Use these reports as a risk signal, then check current listings before you buy.

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What breaks?

What breaks? · reports

Battery failure

Batteries (884)

54 months

Government / agencyIndexed Oct 28, 2026Source-linkedVerify source — SaferProducts.gov incident

SaferProducts.gov consumer incident report 20260902-CE725-2147310651. Severity: No Incident, No Injury. Matched catalog product: Tesla Powerwall 2. Incident: our tesla powerwall 2 battery was just disabled remotely by Tesla due to a safety recall. the problem is that they have known about this issue for at least a year or two, but chose to keep my safety and my financial security at risk to keep their bottom line intact with a 'rolling' recall. They indicate that it will be at least 4 weeks for a replacement, even though they have had over a year to prepare for this. I am suffering financial losses, and potential disruptions to my home office and business life in the interim.

UnverifiedEvidence ★★★★☆
View report details

Months until failure

54 months

Repair cost

Not stated

Repaired

Not stated

Manufacturer warranty

Not stated

Extended warranty

Not stated

Support helpful

Not stated

Would recommend

Not stated

AI extraction confidence

92%

Verification status

Unverified

Evidence quality

★★★★☆ (4/5)

Discussion

Overheating

Residential Alternative Energy Systems For On-site Power Gen (4084)

57 months

Government / agencyIndexed Oct 22, 2026Source-linkedVerify source — SaferProducts.gov incident

SaferProducts.gov consumer incident report 20260225-1420B-2147323257. Severity: Incident, No Injury. Matched catalog product: Tesla Powerwall 2. Incident: While in my home I heard loud bangs from my garage, as if someone was slamming my metal roll-up garage door. I opened the door to the garage and it was filled with smoke and the acrid smell of burning electrical wiring, etc... I opened the garage door to vent the smoke and immediately the source was revealed to be my Tesla Powerwall 2 emitting smoke and with a large visible burn mark on the unit. I quickly turned it off and tripped all electrical circuit breakers. My Powerwall 2 was NOT included in their recent recall! If I had not been home, or had not been near my garage, I fear my house would have burned down. This incident is extremely distressing, as it endangered my loved ones' lives, my pets' lives, and the possible/likely destruction of my home. To say this situation is absolutely unacceptable is a massive understatement. I'm extremely concerned that many other Powerwall 2 owners (with units NOT recalled) may unknowingly be in grave danger.

UnverifiedEvidence ★★★★☆
View report details

Months until failure

57 months

Repair cost

Not stated

Repaired

Not stated

Manufacturer warranty

Not stated

Extended warranty

Not stated

Support helpful

Not stated

Would recommend

Not stated

AI extraction confidence

92%

Verification status

Unverified

Evidence quality

★★★★☆ (4/5)

Discussion

Other reports

Service, warranty, recall/safety, or quality notes that do not count toward the durability grade.

Fire / overheating risk

Government / agencyIndexed Oct 18, 2026Source-linkedVerify source — UK OPSS product safety report

[UK OPSS Product Safety Report 2609-0219] Brand/model: Tesla Powerwall 2. Product: AC battery system for residential or light commercial use.. Hazard: The product presents a risk of fire as certain battery cells within affected units may develop internal defects over time. An investigation identified that battery cells manufactured by a third party may contain excessive lithium plating, which can lead to cracking of the cell casing. This may result in an internal short circuit and subsequent thermal runaway, increasing the risk of the battery overheating and catching fire. The product does not meet the requirements of the Electrical Equipment (Safety) Regulations 2016.

Recall / safetyUnverifiedEvidence ★★★★☆
View report details

Months until failure

Not stated

Repair cost

Not stated

Repaired

Not stated

Manufacturer warranty

Not stated

Extended warranty

Not stated

Support helpful

Not stated

Would recommend

Not stated

AI extraction confidence

92%

Verification status

Unverified

Evidence quality

★★★★☆ (4/5)

Discussion

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