Batteries

Tesla Powerwall 3 vs Enphase IQ Battery 10C

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

9.5

Choose Enphase IQ Battery 10C if:

Best overall battery for Enphase solar systems
10 kWh in a compact form factor (62% less space per kWh than 5P)
Homeowners who want high power with Enphase ecosystem
Gen4 technology with highest cycle count warranty

$13,000 installed

Spec-by-Spec Comparison

Specification

Tesla Powerwall 3

Enphase IQ Battery 10C

Price

$15,400 installed

$13,000 installed

Warranty

10 years

15 years

Usable Capacity

13.5 kWh

10 kWh

Continuous Power

11.5 kW

7.08 kW

Peak Power

11.5 kW sustained

14.16 kW (10 sec)

Round-trip Efficiency

89%

96% DC / 90% AC

Chemistry

LFP (Lithium Iron Phosphate)

Weight

287 lbs (130 kg)

310 lbs (141 kg)

Dimensions

43.25 x 24.0 x 7.6 in

32.0 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

9.5/10

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 10C

Pros

+10 kWh in a single compact unit — double the 5P capacity
+7.08 kW continuous power — enough for most essential loads
+6,000-cycle guarantee — 50% more cycles than the 5P
+15-year warranty — tied for longest in lineup
+62% less wall space per kWh than the 5P
+Gen4 architecture with improved thermal management

Cons

-$1,300/kWh — still premium pricing vs Tesla or Franklin
-Brand new (mid-2025) — less field history than 5P
-Requires Enphase IQ System Controller for backup
-Cannot mix with 5P units on the same system

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 10C

The IQ 10C is Enphase's Gen4 flagship battery. It's heavier than the 5P (310 lbs vs 185 lbs), so we bring a two-person crew. The install is similar to the 5P — wall-mount, connect to IQ System Controller, configure via Enphase app. The 7 kW continuous power is enough to back up essential loads plus a mini-split AC. For whole-home backup, we recommend two 10C units.

Frequently Asked Questions

Is the Tesla Powerwall 3 or Enphase IQ Battery 10C better?

The Enphase IQ Battery 10C scores 9.5/10 vs 9/10 in our rating. It excels at: best overall battery for enphase solar systems. The Tesla Powerwall 3 is the better choice if: whole-home backup with a single unit. The right pick depends on your specific situation.

How much does the Tesla Powerwall 3 cost vs the Enphase IQ Battery 10C?

The Tesla Powerwall 3 costs $15,400 installed. The Enphase IQ Battery 10C costs $13,000 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 10C has a 15-year warranty (15-year product & performance warranty with 6,000-cycle guarantee). Enphase offers the longer warranty.

Does NuWatt install both the Tesla Powerwall 3 and Enphase IQ Battery 10C?

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 10C

Price

$15,400 installed

$13,000 installed

Warranty

10 years

15 years

Usable Capacity

13.5 kWh

10 kWh

Continuous Power

11.5 kW

7.08 kW

Peak Power

11.5 kW sustained

14.16 kW (10 sec)

Round-trip Efficiency

89%

96% DC / 90% AC

Chemistry

LFP (Lithium Iron Phosphate)

Weight

287 lbs (130 kg)

310 lbs (141 kg)

Dimensions

43.25 x 24.0 x 7.6 in

32.0 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

9.5/10

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 10C

Pros

+10 kWh in a single compact unit — double the 5P capacity
+7.08 kW continuous power — enough for most essential loads
+6,000-cycle guarantee — 50% more cycles than the 5P
+15-year warranty — tied for longest in lineup
+62% less wall space per kWh than the 5P
+Gen4 architecture with improved thermal management

Cons

-$1,300/kWh — still premium pricing vs Tesla or Franklin
-Brand new (mid-2025) — less field history than 5P
-Requires Enphase IQ System Controller for backup
-Cannot mix with 5P units on the same system

Installation Notes from Our Crew

Tesla Powerwall 3

Enphase IQ Battery 10C

Frequently Asked Questions

Is the Tesla Powerwall 3 or Enphase IQ Battery 10C better?

How much does the Tesla Powerwall 3 cost vs the Enphase IQ Battery 10C?

Which has a better warranty?

Does NuWatt install both the Tesla Powerwall 3 and Enphase IQ Battery 10C?

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 10C

Choose Tesla Powerwall 3 if:

Choose Enphase IQ Battery 10C if:

Spec-by-Spec Comparison

Pros & Cons

Tesla Powerwall 3

Pros

Cons

Enphase IQ Battery 10C

Pros

Cons

Installation Notes from Our Crew

Tesla Powerwall 3

Enphase IQ Battery 10C

Frequently Asked Questions

Related Comparisons

Not Sure Which to Choose?

Tesla Powerwall 3 vs Enphase IQ Battery 10C

Choose Tesla Powerwall 3 if:

Choose Enphase IQ Battery 10C if:

Spec-by-Spec Comparison

Pros & Cons

Tesla Powerwall 3

Pros

Cons

Enphase IQ Battery 10C

Pros

Cons

Installation Notes from Our Crew

Tesla Powerwall 3

Enphase IQ Battery 10C

Frequently Asked Questions

Related Comparisons

Not Sure Which to Choose?