Battery comparison — Newcastle & the Hunter
Newy Solar Co currently quotes three battery families. This table compares the configurations we actually install, not every model each manufacturer sells. Capacity can be nominal or usable, so we label both where the manufacturer publishes them. Backup output, circuits and warranty depend on the exact inverter and battery modules named in your written design. New to batteries? Start with our solar battery installation Newcastle guide.
Single-phase hybrid system · one or two 13.99 kWh battery modules
We quote the SMILE configuration by exact inverter and 13.99 kWh battery module. One or two modules provide 13.99 or 27.98 kWh nominal capacity. The written quote states the M5/M10 inverter variant, backup limits and the warranty document applying to the exact battery SKU.
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ESA all-in-one · single phase 6/8/10 kW or three phase 10/15 kW · 8 kWh usable modules
We currently build GoodWe ESA systems with 8 kWh usable battery modules. The written design names the exact 8.3 kWh nominal / 8.0 kWh usable module and compatible inverter. GoodWe's 63 A figure is grid bypass on relevant models; it is not 63 A of battery-powered backup.
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OCEAN 2 Plus single phase or OCEAN 2 three phase · 8.03 kWh nominal modules
We currently build OCEAN 2 systems with EcoFlow's 8.03 kWh nominal module. Single-phase Plus and three-phase OCEAN 2 are different inverter families, so the quote names the phase, inverter rating, module count, usable-capacity basis and backed-up circuits. The published 8 kWh battery warranty is 10 years standard with an optional five-year extension; the quote states whether that extension is included.
Full details| Spec | EntryAlphaESS SMILE M5 & M10Single-phase hybrid system · one or two 13.99 kWh battery modules | MidGoodWe ESA All-in-OneESA all-in-one · single phase 6/8/10 kW or three phase 10/15 kW · 8 kWh usable modules | TopEcoFlow OCEAN 2 SeriesOCEAN 2 Plus single phase or OCEAN 2 three phase · 8.03 kWh nominal modules |
|---|---|---|---|
| Newy configuration | 1 or 2 × 14 kWh module | 2 to 6 × 8 kWh usable module | 2 to 6 × 8.03 kWh nominal module |
| Capacity | 14 or 28 kWh usable | 16, 24, 32, 40 or 48 kWh usable | 16 to 48 kWh nominal (8.03 kWh steps) |
| Inverter output | M5: 5 kW; M10-S: 8 / 9 / 10 kW by variant | 3 / 3.6 / 5 / 6 / 8 / 10 kW by variant | Plus single phase: 8 / 10 / 12 kW; three phase: 6 / 8 / 10 / 12 kW |
| Backup | Selected circuits; off-grid limits stated in the design | 3–10 kVA off-grid by model; 63 A is grid bypass | Circuits and load limits set in the design; 63 A is grid bypass |
| Expansion | To two modules, subject to inverter compatibility | Within GoodWe's compatible stacking rules | Within EcoFlow's compatible module rules |
| Pricing | Single phase only | Instant price in our estimator | Instant price in our estimator |
Entry, Mid and Top describe each brand's range, not a quality ranking. Get an instant price for any size in our estimator.
Warranty comparison
“Ten-year warranty” can mean several different things. We separate the battery product warranty, retained-capacity or throughput condition, inverter warranty, any optional extension. A published cycle-life figure is a manufacturer test claim, not the number of cycles guaranteed by the warranty.
| Term | AlphaESS SMILE M5 & M10 | GoodWe ESA All-in-One | EcoFlow OCEAN 2 Series |
|---|---|---|---|
| Battery product warranty | 10 years — AlphaESS AU warranty (January 2026) lists SMILE-M-BAT-13.9P | 10 years — GoodWe AU ESA 3–10 kW warranty lists the G20 8.3 kWh module | 10 years standard for the 8.03 kWh module (EcoFlow AU product pages) |
| Retained-capacity / throughput condition | Retained-capacity terms for the exact 13.9P combination are supplied in writing with your quote | 70% usable energy within 10 years, or 29.20 MWh minimum throughput per 8.0 kWh module, whichever comes first (subject to terms) | Retained-capacity condition is stated in EcoFlow's AU warranty terms supplied with your quote |
| Inverter warranty | M10: 10 years under the same AU document. M5 terms are supplied with your quote | 10 years for the named G20 ESA 3–10 kW single-phase inverters | 15 years (OCEAN 2 Plus single-phase and OCEAN 2 three-phase AU pages) |
| Optional extension | None published for this combination | None published | Optional 5-year battery extension — your quote states whether it is included and its conditions |
| Cycle-life claim (not a warranty) | No cycle figure published for this configuration | No cycle figure published for this configuration | 10,000+ cell cycles — EcoFlow cell test claim. Not a warranty and not a guaranteed system life. |
| Source and date checked | AlphaESS AU SMILE M10 warranty (Jan 2026)Checked 24 September 2026 | GoodWe AU ESA single-phase warranty and datasheetChecked 24 September 2026 | EcoFlow AU OCEAN 2 product pagesChecked 24 September 2026 |
Eligible solar and federal battery certificates reduce the installed price. A NSW VPP payment is optional and provider-dependent, and Home Energy Saver finance is repayable. We show each item separately.
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Tell us how your household uses power and we'll set out the exact model, usable capacity, property phase, backup design, warranties and installed price — or get an instant price in our estimator.
