Shop
  • Deals
  • Deal checker
  • Black Friday
  • Buying guides
  • Brands
  • Stores
Travel
  • Flight deals
  • Hotel deals
Company
  • Research
  • Press
  • deal.ai apps
Black Friday 2026
  • Walmart
  • Best Buy
  • Target
  • TVs
  • Laptops
  • Headphones
  • Apple
  • Gaming
  • Vacuums
  • Kitchen
  • Toys
  • Smartwatches
  • Tablets
  • Furniture
  • Mattresses
© Deal.ai Inc.
TermsPrivacy
Deal.ai › Compare

Enphase IQ Battery 5P vs Tesla Powerwall 3

The Powerwall 3 is the stronger single-unit choice for most homes: 13.5 kWh usable, 11.5 kW continuous output and a built-in solar inverter mean it can back up a whole house and run HVAC without extra hardware. The IQ Battery 5P is smaller at 5 kWh and 3.84 kVA, so it suits modest backup loads or homes already on Enphase microinverters. Owners praise Powerwall output and app; Enphase owners value the modular, AC-coupled design and 15-year warranty.

  • Choose the IQ Battery 5P if you already run Enphase microinverters, want a modular AC-coupled battery you can add unit by unit, or need a 15-year warranty.
  • Choose the Powerwall 3 if you want whole-home backup, heavy-load output and a built-in solar inverter in one unit with room to expand to 54 kWh.

Prices

  • Enphase IQ Battery 5P: $2,680.00 at Arbor (checked today)
  • Tesla Powerwall 3: $6,500.00 at eBay (checked today)
  • Difference: the Enphase IQ Battery 5P is $3,820.00 cheaper than the Tesla Powerwall 3 today
Enphase
Enphase IQ Battery 5P

Enphase IQ Battery 5P

$2,680.00at ArborObserved at 1:12 AM
See all prices and details
Visit Arbor
Pros
  • Modular 5 kWh units let you size storage to the home
  • 15-year warranty beats the Powerwall's 10
  • AC-coupled design fits existing solar and Enphase microinverters
  • Cobalt-free LFP chemistry
  • 7.68 kVA peak handles motor surges
Cons
  • 5 kWh is small for whole-home backup
  • 3.84 kVA continuous limits heavy appliance loads
  • No built-in solar inverter
  • Needs several units to match one Powerwall
Tesla
Tesla Powerwall 3

Tesla Powerwall 3

$6,500.00at eBayObserved at 12:26 AM
See all prices and details
Visit eBay

Store links may earn us a commission.

Pros
  • 13.5 kWh usable in one unit
  • 11.5 kW continuous output runs HVAC and heavy loads
  • Built-in 11.5 kW inverter cuts separate equipment
  • Expands to 54 kWh with Expansion Units
  • IP67 outdoor rating and wide temperature range
Cons
  • 10-year warranty is shorter than Enphase's 15
  • Requires a Tesla-certified installer
  • Larger and heavier wall unit
  • Whole-home backup needs proper load planning

What separates them

Enphase IQ Battery 5PTesla Powerwall 3
Usable capacity5 kWh per unit13.5 kWh per unit
Continuous power3.84 kVA (3.33 kVA at 208 V)11.5 kW
Solar inverterNone built in; AC-coupled to existing solarIntegrated 11.5 kW hybrid inverter, up to 20 kW DC and 6 MPPTs
Warranty15-year limited10-year with 70% capacity retention
ExpandabilityStack multiple 5 kWh unitsUp to 3 Expansion Units, 54 kWh total
Round-trip efficiency90% AC, 96% DC97.5% solar-to-grid
Enclosure and temperatureIndoor/outdoor wall mountIP67 / NEMA 3R, –4°F to 122°F
InstallationAC-coupled, works with existing Enphase systemsTesla-certified installer required

Price history

$8,399.00$2,680.00
Nov 6Nov 9
  • Enphase IQ Battery 5P: lowest $2,680.00 on Nov 9 at Arbor.
  • Tesla Powerwall 3: lowest $8,399.00 on Nov 9 at Green Vista Living.

Prices at every store

Enphase IQ Battery 5P

  • RES SupplyNew

    In stock

    $2,813.00+ $250.00 shippingObserved at 1:11 AM
    Visit RES Supply
  • ArborNew

    Availability unknown

    $2,680.00Observed at 1:12 AM
    Visit Arbor
  • US Solar SupplierNew

    Availability unknown

    $2,979.00Observed at 1:11 AM
    Visit US Solar Supplier
  • eBayNew

    Availability unknownSold by everyonessolar (99.1% positive, 2,300 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $3,129.00Free shippingObserved at 1:11 AM
    Visit eBay

Also available at

  • eBayCheck price at eBay

Store links may earn us a commission.

All 13 stores and price history →

Tesla Powerwall 3

  • Green Vista LivingNew

    In stock

    $8,399.00Free shippingObserved at 12:27 AM
    Visit Green Vista Living
  • Ampere AuthorityNew

    In stock

    $8,399.00Free shippingObserved at 12:27 AM
    Visit Ampere Authority
  • Vital Home USANew

    In stock

    $8,399.00Free shippingObserved at 12:27 AM
    Visit Vital Home USA
  • eBayNew

    Availability unknownSold by brflo8687 (100% positive, 4 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $6,500.00+ $400.00 shippingObserved at 12:26 AM
    Visit eBay

Also available at

  • eBayCheck price at eBay

Store links may earn us a commission.

All 10 stores and price history →

Specs compared

SpecEnphase IQ Battery 5PTesla Powerwall 3
Warranty15-year limited warranty10 years
Communication5.0—
Energy capacity5 kWh—
Continuous power output3.84 kVA / 3.33 kVA (240 V / 208 V)—
Peak power output7.68 kVA (3 seconds)—
Dimensions38.6 in x 21.7 in x 7.4 in—
Weight174 lbs—
Battery chemistryCobalt-free lithium iron phosphate (LFP)—
Rated output current16.7 A—
Nominal AC voltage230 V-L-N—
Nominal frequency50 Hz—
AC round-trip efficiency90%—
Show all 17 specsShow fewer specs
SpecEnphase IQ Battery 5PTesla Powerwall 3
DC round-trip efficiency96%—
Capacity—13.5 kWh
Discharge Rate—48A
Expandability—7 total units
Roundtrip efficiency—97.5%

What reviewers say

Enphase IQ Battery 5P

What people mention
  • ReliabilityCriticisedOne buyer reported a board that did not work.

Tesla Powerwall 3

Owners and installers generally rate the Powerwall 3 highly for its clean all-in-one design, quiet operation and strong surge output for AC and well pumps.

What people mention
  • OutputPraisedUsers say it starts AC compressors and well pumps without strain.
  • NoisePraisedOwners describe it as quiet, with no loud fan cycling in normal use.
  • AppMixedThe Tesla app is easy to read but offers limited fine-grained energy control.
  • ExpandabilityMixedAdding Expansion Units is simple in principle but owners say the extra capacity is costly.
Reviews
  • Best Solar Batteries of 2026 - CNET
  • Best Solar Batteries of 2026 - CNET

Questions and answers

Which is better for whole-home backup?
The Powerwall 3. Its 13.5 kWh capacity and 11.5 kW continuous output can carry a full panel and heavy loads like AC. The IQ Battery 5P's 3.84 kVA suits critical-load panels or several stacked units.
Which lasts longer?
The IQ Battery 5P carries a 15-year limited warranty versus 10 years on the Powerwall 3. Both use LFP chemistry, which is long-lived; the Powerwall warranty guarantees 70% capacity retention.
Is the Powerwall 3 worth stepping up to?
Yes for most homes without existing Enphase gear. One unit gives more than double the capacity, triple the output and a built-in solar inverter. Step up only if your installer supports Tesla and your loads justify it.
Can I add the IQ Battery 5P to existing solar?
Yes. It is AC-coupled, so it works alongside most existing solar systems, and it integrates directly with Enphase microinverter setups. The Powerwall 3 also retrofits but needs a Tesla-certified installer.
Which handles a power surge better?
The Powerwall 3 delivers 11.5 kW continuous, far above the IQ Battery 5P's 7.68 kVA three-second peak. For motor starts and HVAC, the Powerwall has more headroom.
Do both use safe battery chemistry?
Both use cobalt-free lithium iron phosphate (LFP), which is more thermally stable than older nickel chemistries. Neither relies on cobalt.

Ask our shopping agent

It checks today's price at every store, compares the alternatives and answers in about a minute.

Enter to send, Shift+Enter for a new line

More comparisons

  • SOK 48V 100Ah LiFePO4 Server Rack Battery vs Tesla Powerwall 3
  • Signature Solar EG4 LifePower4 48V 100Ah Lithium Battery vs Tesla Powerwall 3

Buying guides that pick them

  • Best lithium solar batteries for home storage