Huawei LUNA2000-21-S1 vs SMA Home Storage 6.5
Technical comparison · High voltage
Huawei LUNA2000-21-S1 and SMA Home Storage 6.5 are not direct competitors: different use classes. SMA Home Storage 6.5 is the entry-level choice; Huawei LUNA2000-21-S1 offers more capability in a higher class. Judge them by budget, not head-to-head.
| Parameter |
LUNA2000-21-S1
Huawei
F5 · Large-house-sized (over 20 kWh)
|
Home Storage 6.5
SMA
F3 · Flat-sized (3–8 kWh)
|
|---|---|---|
| In brief | ||
| Usable capacity | 20.7 kWh | 6.56 kWh |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Cost per kWh | 386.47 €/kWh | — |
| List price | 8000 € | — |
| Weight | 216 kg | 76 kg |
| Dimensions (W×D×H) | 59 × 25.5 × 123 cm | 61 × 21.46 × 96.9 cm |
| How long it lasts | ||
| Battery life cycles | 1393 cicli | 730 cicli |
| The limit that runs out first | energia garantita | anni di garanzia |
| Rated cycles | 5000 cicli | 8000 cicli |
| Capacity at end of cycle life | 80 % | 60 % |
| Warranty | 5 anni | 2 anni |
| Guaranteed throughput | 28.84 MWh | 47.232 MWh |
| Guaranteed remaining capacity | 60 % | 60 % |
| The numbers | ||
| Cost of stored energy | 0.277 €/kWh | — |
| Energy density | 95.8 Wh/kg | 86.3 Wh/kg |
| Identity | ||
| Use tier | F5 — Large-house-sized (over 20 kWh) | F3 — Flat-sized (3–8 kWh) |
| Price | ||
| Price | ~5000–11000 € | — |
| Category specs | ||
| Depth of discharge | 100 % | 100 % |
| Expandable | Yes | Yes |
| Maximum expanded capacity | — | 16.4 kWh |
| Battery voltage | — | 192 V |
| Declared compatible inverters | Solo inverter Huawei — SUN2000-2/3/3.68/4/4.6/5/6KTL-L1, SUN2000-3/3.68/4/4.6/5/6K-LB0, SUN2000-8/10K-LC0, SUN2000-3/4/5/6/8/10KTL-M1, SUN2000-5/6/8/10/12K-MAP0, SUN2000-12/15/17/20/25K-MB0, SUN5000-3/6K-LB0, SUN5000-8/12K-MAP0, SUN5000-17/25K-MB0 | Compatibile con entrambi gli inverter ibridi della gamma Smart Energy di SMA: il monofase Sunny Boy Smart Energy (da 1 a 4 moduli) e il trifase Sunny Tripower Smart Energy (da 2 a 5 moduli). È la prima taglia della gamma che può scegliere fra i due. Non retrofittabile sui vecchi Sunny Boy Storage (SBS2.5-1VL-10, SBS3.7-10-SBS6.0-10) né con inverter di altri marchi. |
| Maximum charge power | 10.5 kW | — |
| Grid charging | Yes | — |
| Round-trip efficiency | — | 94.5 % |
| Standby consumption | — | 4 W |
| SPI index (HTW Berlin) | — | 92.8 % |
| HTW test power class | — | 5 kW class |
| HTW test edition | — | Stromspeicher-Inspektion 2026 |
| Ingress protection | IP66 | IP65 |
| Mounting | Floor standing | Wall mounted |
| Minimum temperature | -20 °C | -10 °C |
| Maximum temperature | 55 °C | 50 °C |
| Noise level | 29 dB | — |
| Works without internet | With limitations | — |
| Remote updates | — | Can be disabled |
| App required for setup | Yes | — |
| Declared standards | CE, UN 38.3, IEC 62619 | CE, UN 38.3, IEC 62619, IEC 62477, VDE 2510-50 |
The differences that matter
- Usable capacity: Huawei LUNA2000-21-S1 20.7 kWh vs SMA Home Storage 6.5 6.56 kWh
- Warranty: Huawei LUNA2000-21-S1 5 years vs SMA Home Storage 6.5 2 years
- Guaranteed throughput: Huawei LUNA2000-21-S1 28.84 MWh vs SMA Home Storage 6.5 47.232 MWh
- Ingress protection: Huawei LUNA2000-21-S1 IP66 · SMA Home Storage 6.5 IP65
- Mounting: Huawei LUNA2000-21-S1 Floor standing · SMA Home Storage 6.5 Wall mounted
Which one to choose
Choose Huawei LUNA2000-21-S1 if…
you value usable capacity and warranty. It is the best value for money in its class.
Choose SMA Home Storage 6.5 if…
you value guaranteed throughput.
This comparison points to the two product pages, where you'll find the complete data and the official links.