What is the HVM 22.1?
- Usable energy: 22.08 kWh from eight 2.76 kWh HVM modules (51.2 V each)
- System voltage: 409.6 V nominal (320–472 V operating), 50 A continuous discharge, 75 A peak for 3 seconds
- Expansion: up to three towers in parallel for 66.2 kWh — never mixed with HVS systems, and all towers must carry equal module counts
- Enclosure: IP55 floor-standing, indoor or outdoor, 2160 × 585 × 298 mm, 291–319 kg, ≥96% round-trip efficiency
- Warranty: datasheet states 10 years · Southeast Asia terms: 5-year product plus 7-year performance at 60%, extended to 10 years when internet-connected
The BYD Battery-Box Premium HVM 22.1 is the large-capacity option in BYD's high-voltage family, delivering 22.08 kWh usable from eight 2.76 kWh modules at 409.6 V. Its 50 A continuous discharge is double that of the HVS, so it supports heavier loads, and with nearly twice the capacity it runs a property far longer. It suits large villas, businesses, or homes wanting to back up almost the entire load overnight — and it expands to 66.2 kWh across three parallel towers.
How does the HVM 22.1 differ from the HVS 12.8?
Both are BYD high-voltage LFP systems; the differences are module size and current capability. The HVM uses 2.76 kWh modules at 51.2 V each — eight of them producing 409.6 V and 22.08 kWh. The HVS uses 2.56 kWh modules at 102.4 V, five of them giving 512 V and 12.8 kWh. The practical difference is discharge current: 50 A on the HVM versus 25 A on the HVS, which means greater peak load capability when paired with a suitable inverter, alongside nearly double the runtime. One constraint needs planning from the outset: HVM towers parallel up to three units for 66.2 kWh, all towers must have identical module counts, and HVM cannot be paralleled with HVS systems. If future expansion is likely, choose the right family at the first installation.
Highlights from the datasheet
- 22.08 kWh capacity: enough to carry most of a home overnight, or a small to medium business
- 50 A continuous discharge: double the HVS, supporting heavier peak loads with a suitable inverter
- Expandable to 66.2 kWh: up to three parallel towers for high-capacity requirements
- IP55 floor-standing, indoor or outdoor: more siting flexibility than indoor-only batteries
- ≥96% round-trip efficiency: low losses across the charge-discharge cycle
- 68.31 MWh minimum warranted throughput: a concrete figure for estimating life against real usage
- Broad inverter compatibility: Fronius, SMA, Sungrow, GoodWe, KOSTAL, Solis, Deye, Canadian Solar and Hoymiles per the official list
Key specifications (HVM 22.1)
| Specification | Datasheet value |
|---|---|
| Usable Energy | 22.08 kWh |
| Battery Module / Number of Modules | HVM (2.76 kWh, 51.2 V, 35 / 38 kg) จำนวน 8 โมดูล |
| Nominal Voltage | 409.6 V |
| Operating Voltage | 320 - 472 V |
| Max Output Current / Peak Output Current | 50 A / 75 A (3 วินาที) |
| Battery Type | Lithium Iron Phosphate (LiFePO4) |
| Depth of Discharge (test condition) | 100% DOD (ทดสอบที่ 0.2C ชาร์จ/คายประจุ ที่ +25 °C) |
| Minimum Throughput Energy (warranty) | 68.31 MWh |
| Round-trip Efficiency | ≥ 96% |
| Dimensions (H/W/D) / Weight | 2160 x 585 x 298 mm / 291 - 319 kg |
| Protection Rating | IP55 (ติดตั้งในหรือนอกอาคาร ตั้งพื้น) |
| Operating Temperature | -10 °C ถึง +50 °C (มี power derating ระหว่าง -10 °C ถึง +5 °C) |
| Communication | CAN / RS485 |
| Scalability | ขนานได้สูงสุด 3 ทาวเวอร์ รวม 66.2 kWh (ห้ามขนานร่วมกับระบบ HVS และทุกทาวเวอร์ต้องมีจำนวนโมดูลเท่ากัน) |
| Compatible Inverters | ใช้ 4-8 โมดูล กับ Fronius Symo Hybrid / Symo GEN24 Plus, SMA STP 5.0-10.0 SE, Sungrow SH5.0-10RT, GoodWe ET/EHB, KOSTAL Plenticore Plus, Solis S6-EH3P(29.9-50)K-H, Deye SUN-(5-20)K-SG01HP3-EU-AM2 / SUN-50K-SG01HP3-EU-BM4, Canadian Solar CSI-TE, Hoymiles HYT-HV-EUG1 (ตาม Compatible Inverter List V2.21) |
| Warranty | datasheet ระบุ 10 ปี — เงื่อนไขฉบับเอเชียตะวันออกเฉียงใต้: ตัวสินค้า 5 ปี + สมรรถนะเหลือ 60% 7 ปี (ขยายเป็น 10 ปีเมื่อเชื่อมต่ออินเทอร์เน็ต) |
Note: every figure above comes straight from the BYD Lithium Battery Co., Ltd. (ตาม datasheet ฉบับปัจจุบัน) — บริษัทในเครือ BYD Company Limited datasheet. Actual system design (strings per MPPT, cable sizing, breakers) must be calculated for each site.
Why this model suits Phuket
- Large villas with heavy loads: 22 kWh at 50 A can back up several air-conditioners at once, unlike smaller batteries
- Storm-season outages: capacity at this level carries a household through the night without a generator
- IP55 outdoor capability: useful for villas without a large plant room, though a roofed, ventilated position is still specified
- Floor loading must be checked: at 291–319 kg and 2.16 m tall, the location and access route need assessment first
Who it suits
- Large villas and premium homes: backing up almost the whole property overnight
- Small to medium businesses: clinics, restaurants, cold rooms or offices that cannot stop
- Projects planning capacity growth: up to three towers and 66.2 kWh
- High-power high-voltage hybrid systems: needing more continuous current than the HVS provides
- Premium rental villas: where outages hit guest experience and reviews directly
Summary
The BYD Battery-Box Premium HVM 22.1 delivers 22.08 kWh at 50 A continuous — double the current of the HVS — making it the choice for large Phuket villas and businesses backing up most of the property overnight, expandable to 66.2 kWh across three towers. Plan the family choice early: HVM cannot be paralleled with HVS, and the near-300 kg enclosure requires a verified floor and access route.
See other models from this brand on the BYD overview, or browse all the equipment we install.
Download the datasheet (PDF) — full manufacturer specification sheet