BYD Battery-Box Premium HVS 5.1 vs Deye AI-W5.1-12P3-EU-B
Usable capacity: BYD Battery-Box Premium HVS 5.1 5.12 kWh, Deye AI-W5.1-12P3-EU-B 5.12 kWh. The Deye AI-W5.1-12P3-EU-B is better on 3 of 7 comparable points.
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Both models in detail
Who wins where
- BYD Battery-Box Premium HVS 5.1
- Deye AI-W5.1-12P3-EU-B
Biggest differences
| Fact | Battery-Box Premium HVS 5.1 | AI-W5.1-12P3-EU-B |
|---|---|---|
| Expandable up to | 38.4 kWh | 184 kWh |
| Min. operating temperature | -10 °C | -20 °C |
| Weight | 91 kg | 53 kg |
Score per area = position (0–100) relative to all 140 models in this category; higher is better.
| Technical specifications | BYDBattery-Box Premium HVS 5.1 | DeyeAI-W5.1-12P3-EU-B |
|---|---|---|
| General | ||
| Cell chemistry | LFP1 | LFP2 |
| Wi-Fi / app | – | Yes2 |
| Performance | ||
| Usable capacity | 5.12 kWh1 | 5.12 kWh2 |
| Nominal capacity | – | 5.12 kWh2 |
| Expandable up to | 38.4 kWh1 | 184 kWh✓2 |
| Efficiency | ||
| Round-trip efficiency | 96 %✓1 | 95.5 %2 |
| Electrical | ||
| Backup power | Yes1 | – |
| Off-grid capable | Yes1 | Yes2 |
| Dimensions & weight | ||
| IP rating | IP551 | IP652 |
| Min. operating temperature | -10 °C1 | -20 °C✓2 |
| Width | 585 mm1 | 720 mm2 |
| Height | 762 mm1 | 300 mm2 |
| Depth | 298 mm1 | 255 mm2 |
| Weight | 91 kg1 | 53 kg✓2 |
| Warranty & lifespan | ||
| Warranted cycles | – | 6,0002 |
| Warranty | 10 years1 | 10 years2 |
Frequently asked questions
Which is better: the BYD Battery-Box Premium HVS 5.1 or the Deye AI-W5.1-12P3-EU-B?
Usable capacity: BYD Battery-Box Premium HVS 5.1 5.12 kWh, Deye AI-W5.1-12P3-EU-B 5.12 kWh. The Deye AI-W5.1-12P3-EU-B is better on 3 of 7 comparable points.
What is the usable capacity of the BYD Battery-Box Premium HVS 5.1 and the Deye AI-W5.1-12P3-EU-B?
BYD Battery-Box Premium HVS 5.1: 5.12 kWh. Deye AI-W5.1-12P3-EU-B: 5.12 kWh.
Which is better on expandable up to: the BYD Battery-Box Premium HVS 5.1 or the Deye AI-W5.1-12P3-EU-B?
Deye AI-W5.1-12P3-EU-B: 184 kWh. BYD Battery-Box Premium HVS 5.1: 38.4 kWh.
Which is better on min. operating temperature: the BYD Battery-Box Premium HVS 5.1 or the Deye AI-W5.1-12P3-EU-B?
Deye AI-W5.1-12P3-EU-B: -20 °C. BYD Battery-Box Premium HVS 5.1: -10 °C.
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Sources
- Battery-Box Premium HVS – datasheet, BCU2.0 V1.0 EN (28.03.2025) — BYD Lithium Battery Co., Ltd. · accessed Sep 27, 2026
- AI-W5.1-5/6/8/10/12P3-EU-B-ESS All-in-one Energy Storage System, V3.0 — NINGBO DEYE ESS TECHNOLOGY CO., LTD · accessed Oct 17, 2026