Batteries

Tesla Powerwall 3 vs Enphase IQ Battery 5P

Side-by-side comparison based on specs, real pricing, and our crew's installation experience. Updated for 2026.

Tesla

Enphase

Choose Tesla Powerwall 3 if:

Whole-home backup with a single unit
Homes needing high continuous power (11.5 kW)
Tesla vehicle owners (unified Tesla app)
Starting heavy loads like AC and well pumps (185 LRA)

$15,400 installed

8.5

Choose Enphase IQ Battery 5P if:

Homes with Enphase microinverter systems
Modular expansion (stack multiple 5 kWh units)
Essential load backup on a budget
Long warranty peace of mind

$8,500 installed

Spec-by-Spec Comparison

Specification

Tesla Powerwall 3

Enphase IQ Battery 5P

Price

$15,400 installed

$8,500 installed

Warranty

10 years

15 years

Usable Capacity

13.5 kWh

5 kWh

Continuous Power

11.5 kW

3.84 kW

Peak Power

11.5 kW sustained

7.68 kW (10 sec)

Round-trip Efficiency

89%

96% DC / 90% AC

Chemistry

LFP (Lithium Iron Phosphate)

Weight

287 lbs (130 kg)

185 lbs (84 kg)

Dimensions

43.25 x 24.0 x 7.6 in

26.1 x 42.0 x 12.6 in

Operating Temp

-20°C to 50°C

-15°C to 55°C

Connectivity

Tesla Gateway + Wi-Fi/Cellular

Enphase Envoy + Wi-Fi

NuWatt Rating

9/10

8.5/10

Pros & Cons

Tesla Powerwall 3

Pros

+11.5 kW continuous output — highest of any residential battery
+Integrated solar inverter (up to 20 kW DC input) — simplifies installation
+LFP chemistry — safer and longer-lasting than NMC
+Tesla app with Storm Watch auto-prepares for outages
+Can start motors up to 185 LRA — handles central AC easily
+Expansion packs add 13.5 kWh each (up to 3)

Cons

-10-year warranty — shortest in our lineup
-Availability can be inconsistent — 3-6 month waits common
-Requires Tesla-certified installer
-$1,140/kWh — more expensive per kWh than competitors

Enphase IQ Battery 5P

Pros

+96% DC round-trip efficiency — best in class
+15-year warranty — tied for longest available
+Modular: add units as needs grow (up to 16 per system = 80 kWh)
+Seamless Enphase app monitoring with IQ microinverters
+No single point of failure (distributed architecture)
+LFP chemistry — safest battery technology

Cons

-Only 5 kWh per unit — need multiples for whole-home backup
-$1,700/kWh — highest cost per kWh in our lineup
-Requires Enphase IQ System Controller for backup
-3.84 kW continuous — limited power per unit

Installation Notes from Our Crew

Tesla Powerwall 3

Powerwall 3 has a built-in solar inverter, so it replaces both the battery and inverter in a new solar+storage system — saves $2,000-3,000 vs separate components. Our Tesla-certified crew installs in 4-6 hours. The 11.5 kW continuous output means a single unit can back up the whole house including AC. Expansion packs ($5,900 each) add capacity without another inverter.

Enphase IQ Battery 5P

Our crew mounts the IQ 5P on a garage or basement wall in about 3 hours per unit. It pairs directly with the Enphase IQ System Controller — no separate gateway needed. We typically recommend 2-3 units for essential load backup or 4+ for near whole-home coverage. The modular approach means you can start small and add units later without rewiring.

Frequently Asked Questions

Is the Tesla Powerwall 3 or Enphase IQ Battery 5P better?

The Tesla Powerwall 3 scores 9/10 vs 8.5/10 in our rating. It excels at: whole-home backup with a single unit. The Enphase IQ Battery 5P is the better choice if: homes with enphase microinverter systems. The right pick depends on your specific situation.

How much does the Tesla Powerwall 3 cost vs the Enphase IQ Battery 5P?

The Tesla Powerwall 3 costs $15,400 installed. The Enphase IQ Battery 5P costs $8,500 installed. Both prices include professional installation by NuWatt Energy. State incentives may reduce your net cost — use our calculator for exact pricing.

Which has a better warranty?

The Tesla Powerwall 3 has a 10-year warranty (10-year warranty with 70% capacity retention guarantee). The Enphase IQ Battery 5P has a 15-year warranty (15-year product & performance warranty with 4,000-cycle guarantee). Enphase offers the longer warranty.

Does NuWatt install both the Tesla Powerwall 3 and Enphase IQ Battery 5P?

Yes. NuWatt Energy installs both products and our crew has hands-on experience with each. We can help you choose based on your home, energy goals, and budget during a free consultation.

Can I switch from Tesla to Enphase later?

In most cases, yes. Batteries can be added to or replaced in existing solar systems. The main consideration is inverter compatibility and electrical panel capacity. Contact NuWatt for a specific assessment of your system.

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Spec-by-Spec Comparison

Specification

Tesla Powerwall 3

Enphase IQ Battery 5P

Price

$15,400 installed

$8,500 installed

Warranty

10 years

15 years

Usable Capacity

13.5 kWh

5 kWh

Continuous Power

11.5 kW

3.84 kW

Peak Power

11.5 kW sustained

7.68 kW (10 sec)

Round-trip Efficiency

89%

96% DC / 90% AC

Chemistry

LFP (Lithium Iron Phosphate)

Weight

287 lbs (130 kg)

185 lbs (84 kg)

Dimensions

43.25 x 24.0 x 7.6 in

26.1 x 42.0 x 12.6 in

Operating Temp

-20°C to 50°C

-15°C to 55°C

Connectivity

Tesla Gateway + Wi-Fi/Cellular

Enphase Envoy + Wi-Fi

NuWatt Rating

9/10

8.5/10

Pros & Cons

Tesla Powerwall 3

Pros

+11.5 kW continuous output — highest of any residential battery
+Integrated solar inverter (up to 20 kW DC input) — simplifies installation
+LFP chemistry — safer and longer-lasting than NMC
+Tesla app with Storm Watch auto-prepares for outages
+Can start motors up to 185 LRA — handles central AC easily
+Expansion packs add 13.5 kWh each (up to 3)

Cons

-10-year warranty — shortest in our lineup
-Availability can be inconsistent — 3-6 month waits common
-Requires Tesla-certified installer
-$1,140/kWh — more expensive per kWh than competitors

Enphase IQ Battery 5P

Pros

+96% DC round-trip efficiency — best in class
+15-year warranty — tied for longest available
+Modular: add units as needs grow (up to 16 per system = 80 kWh)
+Seamless Enphase app monitoring with IQ microinverters
+No single point of failure (distributed architecture)
+LFP chemistry — safest battery technology

Cons

-Only 5 kWh per unit — need multiples for whole-home backup
-$1,700/kWh — highest cost per kWh in our lineup
-Requires Enphase IQ System Controller for backup
-3.84 kW continuous — limited power per unit

Installation Notes from Our Crew

Tesla Powerwall 3

Enphase IQ Battery 5P

Frequently Asked Questions

Is the Tesla Powerwall 3 or Enphase IQ Battery 5P better?

How much does the Tesla Powerwall 3 cost vs the Enphase IQ Battery 5P?

Which has a better warranty?

Does NuWatt install both the Tesla Powerwall 3 and Enphase IQ Battery 5P?

Yes. NuWatt Energy installs both products and our crew has hands-on experience with each. We can help you choose based on your home, energy goals, and budget during a free consultation.

Can I switch from Tesla to Enphase later?

Update Location

Tesla Powerwall 3 vs Enphase IQ Battery 5P

Choose Tesla Powerwall 3 if:

Choose Enphase IQ Battery 5P if:

Spec-by-Spec Comparison

Pros & Cons

Tesla Powerwall 3

Pros

Cons

Enphase IQ Battery 5P

Pros

Cons

Installation Notes from Our Crew

Tesla Powerwall 3

Enphase IQ Battery 5P

Frequently Asked Questions

Related Comparisons

Not Sure Which to Choose?

Tesla Powerwall 3 vs Enphase IQ Battery 5P

Choose Tesla Powerwall 3 if:

Choose Enphase IQ Battery 5P if:

Spec-by-Spec Comparison

Pros & Cons

Tesla Powerwall 3

Pros

Cons

Enphase IQ Battery 5P

Pros

Cons

Installation Notes from Our Crew

Tesla Powerwall 3

Enphase IQ Battery 5P

Frequently Asked Questions

Related Comparisons

Not Sure Which to Choose?