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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 10C wins this head-to-head comparison, taking 3 out of 5 categories. It's the stronger choice for most homeowners, especially those who prioritize best overall battery for enphase solar systems. That said, the Enphase IQ Battery 5P is still a solid product and may be the better pick if you specifically need homes with enphase microinverter systems.
Enphase · IQ Battery 5P
Enphase · IQ Battery 10C
| Spec | Enphase | Enphase |
|---|---|---|
| Usable Capacity | 5 kWh | 10 kWh |
| Continuous Power | 3.84 kW | 7.08 kW |
| Peak Power | 7.68 kW (10 sec) | 14.16 kW (10 sec) |
| Round-trip Efficiency | 96% DC / 90% AC | 96% DC / 90% AC |
| Chemistry | LFP (Lithium Iron Phosphate) | LFP (Lithium Iron Phosphate) |
| Weight | 185 lbs (84 kg) | 310 lbs (141 kg) |
| Dimensions | 26.1 x 42.0 x 12.6 in | 32.0 x 42.0 x 12.6 in |
| Operating Temp | -15°C to 55°C | -15°C to 55°C |
| Connectivity | Enphase Envoy + Wi-Fi | Enphase Envoy + Wi-Fi |
We evaluate each product across the metrics that matter most to homeowners.
Both offer 15-year warranties.
Enphase IQ Battery 5P is more affordable at $8,500 installed vs $13,000 installed.
Our crew rates the Enphase IQ Battery 10C higher at 9.5/10 vs 8.5/10.
Enphase IQ Battery 10C offers more storage at 10 kWh vs 5 kWh.
Enphase IQ Battery 10C delivers more power at 7.08 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 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.
The Enphase IQ Battery 10C wins this head-to-head comparison, taking 3 out of 5 categories. It's the stronger choice for most homeowners, especially those who prioritize best overall battery for enphase solar systems. That said, the Enphase IQ Battery 5P is still a solid product and may be the better pick if you specifically need homes with enphase microinverter systems.
Our energy advisors can help you decide between the Enphase IQ Battery 5P and Enphase IQ Battery 10C based on your specific home, budget, and energy goals.
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