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LONGi 655W Hi-MO 9 HPBC 66 Cell Double Glass Silver Frame MC4-EVO2 Solar Panel
LONGi 655W Hi-MO 9 HPBC 66 Cell Double Glass Silver Frame MC4-EVO2 Solar Panel
The LONGi Hi-MO 9 655 W is a Back-contact (BC) cell on an N-type TaiRay wafer solar panel. It delivers 24.2 % module efficiency from a 2,382 × 1,134 mm frame.
About the LONGi Hi-MO 9 range
Hi-MO 9 is LONGi's large-format utility and commercial module, pairing the back-contact cell with double-glass construction for high-output ground mount and commercial rooftop arrays.
At 2,382 mm tall and 2.70 m² this is a commercial-format module, intended for warehouse and barn roofs, ground mounts and solar farms where the extra length is not a constraint. It is usually too long for a typical domestic roof plane.
Why installers specify this panel
- Hail tested to 25 mm at 23 m/s — relevant for exposed and upland UK sites.
- Long-dated warranty — 12-year warranty for materials and processing and a 30-year linear power output warranty; first-year degradation under 1 %, 0.35 % per year from year 2 to 30.
Electrical characteristics (STC)
| Rated power (Pmax) | 655 W |
| Module efficiency | 24.2 % |
| Open-circuit voltage (Voc) | 49.82 V |
| Voltage at maximum power (Vmp) | 41.08 V |
| Short-circuit current (Isc) | 16.62 A |
| Current at maximum power (Imp) | 15.94 A |
| Maximum system voltage | DC 1500 V (IEC/UL) |
| Maximum series fuse rating | 35 A |
STC: AM1.5, 1,000 W/m², 25 °C cell temperature.
Mechanical specification
| Number of cells | 132 (6 × 22) |
| Frame | Anodized aluminium alloy |
| Dimensions | 2,382 × 1,134 × 30 mm |
| Weight | 32.7 kg |
| Junction box | IP68, three diodes |
Temperature and load ratings
| Operating temperature | -40 °C to +85 °C |
| Nominal operating cell temperature | 45 ±2 °C |
| Hail test | 25 mm Hailstone at the speed of 23m/s |
| Protection class | Class II |
| Fire rating | UL type 29 |
Warranty and certification
12-year warranty for materials and processing and a 30-year linear power output warranty; first-year degradation under 1 %, 0.35 % per year from year 2 to 30. Certified to IEC 61215, IEC 61730, UL 61730, ISO 9001:2015, ISO 14001:2015, ISO 45001:2018 and IEC 62941.
Array sizing
Each panel covers 2.70 m². A 4 kWp array needs 6 of them (3.93 kWp over about 16 m²). A 6 kWp array needs 9 of them (5.89 kWp over about 24 m²). At 32.7 kg each they are a two-person lift.
About LONGi
LONGi is one of the largest solar manufacturers in the world and the company behind the Hi-MO series. Its HPBC back-contact platform is the successor to the PERC modules it shipped in volume for a decade, and it is manufactured to IEC 61215 and IEC 61730 under ISO 9001, ISO 14001, ISO 45001 and IEC 62941 quality systems.
Datasheets, installation manuals and warranty documents for the LONGi Hi-MO 9 are in the Documents tab below. Buying for a project? Contact our sales team at sales@clearraysolar.com for pallet pricing.
Build your complete solar system
Everything you need in one place.
- Inverters
- Batteries
- Mounting Systems
- Cabling & Accessories
Delivery times vary by region:
- UK — 1-2 business days
- Highlands & Islands — 1-2 business days
Returns accepted within 14 days of delivery for unused items in original packaging.