Indépendant · sourcé · Mis à jour 2026-08-01
Best Home Battery Backup (2026)
13 produits comparés sur les caractéristiques qui comptent et le prix US — du moins cher au plus cher. Chaque caractéristique et chaque prix renvoie à sa source et à la date de relevé.
Les meilleurs selon les chiffres
Gagnants objectifs — chacun est en tête sur une caractéristique mesurée, avec le chiffre. Aucun classement subjectif.
- Prix le plus bas: Powerwall 3 ($9200)
- Le plus récent: aPower 2 (2024)
- Highest usable capacity kwh: Power Storage 20 (20 usable capacity kwh)
- Highest continuous power kw: Power Storage 20 (12.5 continuous power kw)
- Highest peak power kw: Power Storage 20 (30 peak power kw)
- Highest warranty years: IQ Battery 5P (15 warranty years)
Comparatif
| # | Home Battery Backup | Prix | usable capacity kwh | continuous power kw | peak power kw | chimie des piles | round trip efficiency | scalable stackable | Source |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Powerwall 3 | $9200 | 13.5 | 11.5 | 22 | NMC | 97.5 | true | thegreenwatt.com |
| 2 | sonnenCore+ 10 | $13298.45 | 10 | 4.8 | 8.64 | LFP | 85 | true | media.sonnengroup.com |
| 3 | Power Storage 20 | $19500 | 20 | 12.5 | 30 | LiFePO4 (LFP) | 93.8 | true | sav-documentation.s3.amazonaws.com |
| 4 | aPower 2 | — | 15 | 10 | 15 | LFP | 90 | true | franklinwh.com |
| 5 | EP900 + 2×B500 | — | 8.9 | 7.6 | 9 | LiFePO4 (LFP) | 85 | true | es-media-prod.s3.amazonaws.com |
| 6 | ESS Home 8 | — | 14.4 | 7.5 | 9 | Li-ion (cylindrical cells) | 90 | true | lg.com |
| 7 | EverVolt 2.0 | — | 17.1 | 7.6 | 9.6 | LFP | — | true | na.panasonic.com |
| 8 | Home Battery 400V (10 kWh) | — | 9.7 | 5 | 7.5 | — | 94.5 | true | acsolarwarehouse.com |
| 9 | IQ Battery 5P | — | 5 | 3.84 | 7.68 | LFP | 90 | true | enphase.com |
| 10 | OCEAN Pro (10 kWh) | — | 10 | 10 | — | LFP | — | true | energy.ecoflow.com |
| 11 | PWRcell 2 (M3, 9 kWh) | — | 9 | 5.2 | 15.6 | NMC | 88 | true | generac.com |
| 12 | SOLIX X1 (15 kWh) | — | 15 | 6 | 12 | LiFePO4 (LFP) | 90.2 | true | ankersolix.com |
| 13 | Stack'd Series (2-module, 9.6 kWh) | — | 9.6 | — | — | LFP | — | true | homegridenergy.com |
Les caractéristiques sont celles publiées par le fabricant ; les prix sont le tarif conseillé US au lancement.
Comment nous avons établi ce comparatif
13 notable home battery backup systems selected as the 2026 buyer comparison set. All 12 seeds from the brief were verified; one was corrected: EcoFlow 'PowerOcean' is an EU/UK-market product line (homebattery.ecoflow.com/eu) that is not sold in the US — the current US-market EcoFlow home-battery product is 'OCEAN Pro' (energy.ecoflow.com/us), so the entry was replaced with EcoFlow OCEAN Pro and the correction is noted in its provenance. HomeGrid Stack'd Series (a Signature Solar / Lithion house brand) was added as a 13th product representing the modular, budget-oriented segment of the market. This category is dominated by installer-sold, quote-priced hardware: SolarEdge, Generac, Panasonic, LG, FranklinWH, Enphase and HomeGrid publish no consumer MSRP (sold exclusively through certified dealer/installer networks; wholesale distributor pages are frequently login-gated), so priceUsd is null for those with only third-party installed-cost estimates recorded in priceNote per the null-over-guess rule. Only Tesla (hardware price consistently and independently cited by multiple solar-industry reviewers since Tesla's own site is quote/app-only), Savant (MSRP stated in its 2023 trade-press launch coverage) and sonnen (a real distributor sale-price listing) carry a priceUsd. Specs were pulled from manufacturer datasheets/spec sheets wherever fetchable (Tesla, Enphase, FranklinWH, LG, Generac, Bluetti, Savant, sonnen, Anker, EcoFlow, HomeGrid official pages/PDFs) with manufacturer or reputable secondary sources (EnergySage, SolarReviews, trade press) as corroboration; several primary datasheet PDFs (Tesla, SolarEdge) returned HTTP 403 to automated fetch and were corroborated instead via secondary sources that quote the same official figures. 'usable_capacity_kwh', 'continuous_power_kw' and 'priceUsd' all describe the smallest/entry hardware configuration a US buyer can purchase for each modular system, not its maximum expandable size (max expansion is noted in each product's provenance). 'continuous_power_kw' is the sustained AC output rating (off-grid/backup mode where the two differ); 'peak_power_kw' is the manufacturer's short-duration surge rating (typically 3-10s) at that same base configuration, derived from published max-start-current figures where a manufacturer did not label a figure 'peak' outright (shown in provenance). round_trip_efficiency is a plain percentage number. accessedAt 2026-08-01 on all entries.