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Tesla Powerwall 3 vs EG4 PowerPro 48V 280Ah Battery

The Powerwall 3 is the simpler choice for most homes: one box holds the battery and an 11.5kW solar inverter, and Tesla's installer network handles the whole job. The EG4 PowerPro is a bare 48V battery for people building or expanding an off-grid or hybrid system around existing EG4 or compatible inverter gear. The Powerwall 3 wins on integration and output per unit; the EG4 wins on raw cycle life, cold-weather heating and serviceability, and its 4.8-star owner rating reflects that.

  • Choose the Tesla Powerwall 3 if you want a single integrated battery and solar inverter installed by a certified installer, with whole-home backup and room to expand to 54kWh.
  • Choose the EG4 PowerPro if you already run a 48V off-grid or hybrid inverter system and want a wall-mounted LFP battery with self-heating and a long cycle rating.

Prices

  • Tesla Powerwall 3: $6,500.00 at eBay (last seen Nov 10)
  • EG4 PowerPro 48V 280Ah Battery: $3,124.99 at Renewable Outdoors (last seen Nov 13)
  • Difference: the EG4 PowerPro 48V 280Ah Battery is $3,375.01 cheaper than the Tesla Powerwall 3 at the latest prices (Nov 10 and Nov 13)
Tesla
Tesla Powerwall 3

Tesla Powerwall 3

$6,500.00at eBayChecked Nov 10
See all prices and details
Visit eBay

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Pros
  • Battery and solar inverter in one unit cuts equipment and wiring
  • 11.5kW output runs HVAC and heavy appliances during an outage
  • Expandable to 54kWh with Expansion Units
  • IP67 enclosure works indoors or outdoors
  • 10-year warranty with 70% capacity retention
Cons
  • Requires a Tesla-certified installer
  • No built-in heater for cold-weather charging
  • Locked into Tesla's ecosystem and monitoring app
  • One unit alone may not cover a large all-electric home
EG4
EG4 PowerPro 48V 280Ah LiFePO4 Battery

EG4 PowerPro 48V 280Ah Battery

EG4 PowerPro 48V 280Ah LiFePO4 Battery

4.8(35 ratings)
$3,124.99at Renewable OutdoorsChecked 15 h ago
See all prices and details
Visit Renewable Outdoors
Pros
  • 14.3kWh per unit, slightly more than the Powerwall 3
  • 8000-cycle rating and 82.6MWh lifetime throughput
  • Self-heating for cold climates
  • Works with common 48V off-grid and hybrid inverters
  • 4.8 out of 5 from 35 owner ratings
Cons
  • No inverter included; you supply the rest of the system
  • 308.6 lbs and awkward for one person to hang
  • IP65 is below the Powerwall's IP67
  • Needs a compatible 48V inverter and proper DC wiring

What separates them

Tesla Powerwall 3EG4 PowerPro 48V 280Ah Battery
Inverter included11.5kW hybrid solar inverter built in, up to 20kW DC solar input across 6 MPPTsNone; needs an external 48V inverter or charge controller
Usable capacity13.5kWh per unit, expandable to 54kWh with three Expansion Units14.3kWh per unit, stackable in a 48V bank
Continuous output11.5kW from the integrated inverter10kW continuous, 15.4kW surge for 3 seconds
Chemistry and cycle lifeLFP, 10-year warranty with 70% capacity retentionLFP, 8000 cycles at 80% depth of discharge, 82.6MWh lifetime throughput
Cold weatherRated to –4°F but no built-in heaterIntegrated self-heating for cold-weather charging
Enclosure ratingIP67 / NEMA 3R, indoor or outdoorIP65, outdoor rated
InstallationTesla-certified installer requiredStandard 48V DC wiring; fits existing off-grid builds
Weight and mountingAbout 287 lbs, wall or floor mount, 7.6 in deep308.6 lbs, wall mounted

Price history

$8,399.00$7,100.00
Nov 9Nov 13
  • Tesla Powerwall 3: lowest $7,100.00 on Nov 11 at Ampere Authority; $8,389.00 on Nov 13.

Prices at every store

Tesla Powerwall 3

  • 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 shippingChecked Nov 10
    Visit eBay
  • revolution-batteries.comNew

    Availability unknown

    $8,389.00Checked 19 h ago
    Visit revolution-batteries.com
  • Ampere AuthorityNew

    Availability unknown

    $8,399.00Checked 19 h ago
    Visit Ampere Authority
  • GobekUSANew

    Availability unknown

    $8,399.00Checked 19 h ago
    Visit GobekUSA

Also available at

  • eBayCheck price at eBay

Store links may earn us a commission.

All 12 stores and price history →

EG4 PowerPro 48V 280Ah Battery

  • Renewable OutdoorsNew

    In stockReturn policy

    $3,124.99Checked 15 h ago
    Visit Renewable Outdoors
  • Green Vista LivingNew

    In stockReturn policy

    $3,124.99Checked Nov 11
    Visit Green Vista Living
  • GobekUSANew

    In stockReturn policy

    $3,124.99Checked Nov 11
    Visit GobekUSA
  • Off-Grid HabitatsNew

    Availability unknownReturn policy

    $3,124.99Checked Nov 11
    Visit Off-Grid Habitats
All 5 stores and price history →

Specs compared

SpecTesla Powerwall 3EG4 PowerPro 48V 280Ah Battery
Capacity13.5 kWh280Ah
Discharge Rate48A—
Expandability7 total units—
Warranty10 years—
Roundtrip efficiency97.5%—
Voltage—51.2V
Weight—308.6 lbs. (140 kg)
Design Life—8000 Deep Cycles
Lifetime Production—82.6MWh
Max Continuous Discharge—140A
Storage—14.3kWh
Certifications—UL 9540A | UL 1973 | IP65
Show all 15 specsShow fewer specs
SpecTesla Powerwall 3EG4 PowerPro 48V 280Ah Battery
Continuous Output—10kW
Peak Surge—10.5kW for 10 seconds and 15.4kW for 3 seconds
Enclosure Rating—IP65

What reviewers say

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.

EG4 PowerPro 48V 280Ah Battery

  • 4.8 / 535 ratings

Owners rate it 4.8 out of 5 and praise the capacity, the outdoor-rated enclosure and the cold-weather heating. Complaints center on the weight and the effort of hanging it.

What people mention
  • CapacityPraisedOwners like getting 14.3kWh from one wall-mounted unit instead of several rack batteries.
  • Weather sealingPraisedThe IP65 enclosure is trusted for outdoor and garage mounting.
  • Cold weatherPraisedIntegrated self-heating keeps it working in freezing temperatures.
Reviews
  • Best Solar Batteries of 2026 - CNET

Questions and answers

Which is better for whole-home backup?
The Powerwall 3. Its 11.5kW integrated inverter can carry heavy loads like AC and well pumps on its own. The EG4 needs a separate inverter sized for your backup loads.
Which lasts longer?
The EG4 rates 8000 cycles at 80% depth of discharge; Tesla warrants the Powerwall 3 for 10 years at 70% capacity. Both use LFP chemistry, so real-world life depends on how hard you cycle them.
Is the Powerwall 3 worth stepping up to over the EG4?
If you are starting from scratch and want one installed system, yes. If you already own a 48V inverter, the EG4 avoids paying for an inverter you do not need.
Can I use the EG4 with a Powerwall?
No. The Powerwall 3 is a closed Tesla system. The EG4 is a 48V DC battery for off-grid and hybrid inverters such as EG4's own.
Which handles cold weather better?
The EG4, which has integrated self-heating. The Powerwall 3 is rated down to –4°F but does not heat itself.
How much storage can each reach?
The Powerwall 3 reaches 54kWh with three Expansion Units. EG4 PowerPro units stack in a 48V bank, so total capacity depends on how many you wire in parallel.

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Buying guides that pick them

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  • WeightCriticisedAt over 300 lbs it takes two people and a solid wall to install.