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NuWatt designs, installs, and manages solar, battery, heat pump, and EV charger systems across 9 states. One company, one warranty, one point of contact.
Get a Free QuoteWhich is better for your home? We install both. Here's our honest, spec-by-spec comparison based on real installation experience.
The Enphase IQ Battery 5P wins this head-to-head comparison, taking 3 out of 5 categories. It's the stronger choice for most homeowners, especially those who prioritize homes with enphase microinverter systems. That said, the sonnen sonnenCore+ 10 is still a solid product and may be the better pick if you specifically need time-of-use rate optimization (buy low, sell high).
Enphase · IQ Battery 5P
sonnen · sonnenCore+ 10
| Spec | Enphase | sonnen |
|---|---|---|
| Usable Capacity | 5 kWh | 10 kWh |
| Continuous Power | 3.84 kW | 4.8 kW |
| Peak Power | 7.68 kW (10 sec) | 8.5 kW |
| Round-trip Efficiency | 96% DC / 90% AC | 91% |
| Chemistry | LFP (Lithium Iron Phosphate) | LFP (Lithium Iron Phosphate) |
| Weight | 185 lbs (84 kg) | 198 lbs (90 kg) |
| Dimensions | 26.1 x 42.0 x 12.6 in | 56.0 x 24.0 x 10.0 in |
| Operating Temp | -15°C to 55°C | -5°C to 45°C |
| Connectivity | Enphase Envoy + Wi-Fi | Wi-Fi / Ethernet |
We evaluate each product across the metrics that matter most to homeowners.
Enphase IQ Battery 5P offers a longer 15-year warranty vs 10 years.
Enphase IQ Battery 5P is more affordable at $8,500 installed vs $16,000 installed.
Our crew rates the Enphase IQ Battery 5P higher at 8.5/10 vs 7.5/10.
sonnen sonnenCore+ 10 offers more storage at 10 kWh vs 5 kWh.
sonnen sonnenCore+ 10 delivers more power at 4.8 kW vs 3.84 kW.
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.
The sonnenCore+ is an all-in-one system — battery, inverter, and energy management in one box. Installs in 3-4 hours with a single crew. It's the lightest battery in our lineup at 198 lbs, making wall mounting straightforward. The TOU optimization mode is excellent for customers on time-of-use rates who want to minimize grid purchases during peak hours. We install these less frequently than Tesla or Enphase, but they're a solid choice for TOU-focused customers.
The Enphase IQ Battery 5P wins this head-to-head comparison, taking 3 out of 5 categories. It's the stronger choice for most homeowners, especially those who prioritize homes with enphase microinverter systems. That said, the sonnen sonnenCore+ 10 is still a solid product and may be the better pick if you specifically need time-of-use rate optimization (buy low, sell high).
Our energy advisors can help you decide between the Enphase IQ Battery 5P and sonnen sonnenCore+ 10 based on your specific home, budget, and energy goals.
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