--- title: "DMEGC DM490M10RT-B60HBT-U4 490W Solar Panel - Specs & Review | ComparePV" description: "DMEGC DM490M10RT-B60HBT-U4 490W solar panel. Specs: 22.20% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/dmegc-hengdian-group-dm490m10rt-b60hbt-u4" updated: 2026-09-11 --- # DMEGC DM490M10RT-B60HBT-U4 Middle of its segment, heavy for its output 1,089 panels in the segment TOPCon 450-500 W ## Identity - **Manufacturer:** DMEGC - **Model:** DM490M10RT-B60HBT-U4 - **Series:** INFINITY RT (DMxxxM10RT-B60HBT) - **Rated power:** 490 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 450-500 W (1089 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 490 W | 465 W | Strong - top 12% | | | Module efficiency | 22.20% | 22.52% | Typical | 5,817 | | Power density | 221.6 | 225.2 | Weak - bottom 24% | 5,951 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 26.8 kg | 24.0 kg | Weak - bottom 19% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.20% | 22.52% | Typical | 5,817 | | Power density | 221.6 | 225.2 | Weak - bottom 24% | 5,951 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 54.7 | 52.2 | Weak - bottom 19% | 9,080 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **54.7 kg per kWp** - Bottom 19% of the TOPCon 450-500 W segment, against a median of 52.2. - **221.6 watts per square metre** - Bottom 24% of the TOPCon 450-500 W segment, against a median of 225.2. - **Best for:** Residential, commercial and hot-climate. - **Not ideal for:** Weight-limited structures and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 490 W - **Efficiency:** 22.20 % - **Voltage at Pmax (Vmp):** 37.26 V - **Current at Pmax (Imp):** 13.16 A - **Open-circuit voltage (Voc):** 44.30 V - **Short-circuit current (Isc):** 14.08 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.048 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 120 - **Bifacial:** yes ### Physical - **Length:** 1950 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 26.8 kg - **Area:** 2.21 m2 - **Power density:** 221.6 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 428 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 5817 of 14005 | | Power density | 5951 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 9080 of 14005 | | Warranty | 21 of 14005 | ## Pros - **High Efficiency – Up to 23.1%** - A peak efficiency of 23.1% positions the series above peer comparables such as the Trina Solar Vertex Backsheet (21.2%) and on par with the JA Solar JAM60S40 LR (23%). This translates into meaningfully higher power output from the same roof area, which is particularly valuable in space-constrained installations. - **30-Year Linear Power Warranty, Degradation ≤0.4%/year** - The manufacturer guarantees ≤1% degradation in year one and ≤0.4% per year thereafter, ensuring a minimum of 87.4% rated power after 30 years. The market standard for most peer comparables — including JA Solar and Trina — is a 25-year power warranty; the DMEGC INFINITY RT extends that horizon by a full five years at no additional cost. - **Low Temperature Coefficient Pmax of –0.29%/°C** - The N-type TOPCon technology delivers a Pmax temperature coefficient of –0.29%/°C, compared to the –0.34…–0.36%/°C typical of P-type PERC modules. At a summer module operating temperature of 65°C, the advantage over PERC translates to approximately 1.5–2% higher hourly energy yield. - **High Mechanical Strength of Glass-Glass Construction** - The module withstands a front load of 5,400 Pa and a rear load of 2,400 Pa using 2+2 mm tempered glass, with IEC 61215, IEC 61730, and TÜV Rheinland certification. Eliminating the backsheet reduces the risk of PID degradation and cell micro-cracks, directly supporting output stability over the long term. - **BNEF Tier-1 Bankability (Confirmed Q3 2025)** - DMEGC Solar maintains BloombergNEF Tier-1 status through at least Q3 2025, backed by a manufacturing capacity of 21 GW. Tier-1 classification is a prerequisite for non-recourse project financing and a mandatory criterion in many commercial and utility-scale tenders. ## Cons - **Increased Module Weight (~26.8 kg)** - The dual-glass construction raises module weight to approximately 26.8 kg, compared to ~21–22 kg for a typical single-glass backsheet module (e.g., Trina Vertex Backsheet in single-glass configuration). On rooftops with limited load-bearing capacity or in retrofit installations, a structural assessment must be completed prior to mounting. ## About this series The DMEGC INFINITY RT (DMxxxM10RT-B60HBT) are **bifacial** modules featuring a **dual-string (glass-glass) construction**, based on **N-type monocrystalline cells utilizing TOPCon technology**. In practice, this means they outperform many standard P-type modules in real-world conditions, especially at high temperatures and during periods of reduced sunlight. The rear side gain helps boost energy yield in locations with reflective surfaces (bright roofs, gravel, concrete), which investors looking for maximum energy output from the same footprint value. The B60HBT version is ideal for installations where both energy generation and aesthetics matter - including residential rooftops, carports, and commercial projects. The rigidity and sealing of the structure support **high mechanical durability** and parameter stability over time, translating to safer operation and lower risk of performance degradation. This series stands out from the competition by combining TOPCon technology, bifacial capability, and dual-string glass-glass construction in a format convenient for modern roofing applications. ## Notable figures - Efficiency of 22.2% matches the \*\*TOPCon 450-500W\*\* median - 221.6 W/m² power density is 3.6 W/m² below \*\*TOPCon 450-500W\*\* median (225.2 W/m²) - requires larger installation area - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 450-500W\*\* median - At 26.8 kg (2.8 kg above \*\*TOPCon 450-500W\*\* median of 24.0 kg), requires checking roof load capacity - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface ## Questions ### What warranty is offered on the DMEGC INFINITY RT series (DMxxxM10RT-B60HBT)? The DMEGC INFINITY RT series comes with a 25-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. After 30 years of operation, the manufacturer guarantees a minimum of 87.4% of the original rated power. First-year degradation is capped at 1%, with subsequent annual degradation not exceeding 0.4% per year — placing this series above prevailing market standards. ### Is the bifacial design of the DMEGC INFINITY RT panels worthwhile on a typical residential rooftop? The rear-side gain from a bifacial module is meaningful primarily when the surface beneath the panels has high albedo — for example, a light-colored roofing membrane, concrete, gravel, or white crushed stone. On a typical dark-colored pitched roof, the bifacial gain is limited. However, in carport installations, flat-roof systems with light-colored surfaces, or ground-mounted arrays, the bifacial effect can increase energy yield by several to over ten percent at no additional cost. ### How does the TOPCon technology in the DMEGC INFINITY RT series differ from mainstream P-type panels? N-type TOPCon cells exhibit lower first-year degradation (below 1%, compared to 2–3% in P-type modules) and better performance at elevated temperatures — with a power temperature coefficient of approximately -0.30%/°C, resulting in smaller losses on hot, sunny days. In addition, N-type TOPCon cells are inherently resistant to Light-Induced Degradation (LID) and Light and elevated Temperature Induced Degradation (LeTID), phenomena that can reduce the yield of lower-cost modules over many years of operation. ### What are the benefits of the glass-glass (dual-glass) construction in the DMEGC INFINITY RT panels? Replacing the conventional backsheet with a second tempered glass layer results in significantly improved mechanical strength and module hermeticity. Glass-glass construction better withstands wind and snow loads, offers superior moisture resistance and protection against mechanical damage, and reduces the risk of cell corrosion and Potential-Induced Degradation (PID). The result is more stable electrical parameters throughout the module's entire service life and a lower risk of sharp yield drops after many years of operation. ### How do the DMEGC INFINITY RT panels perform in low-irradiance and overcast conditions? N-type TOPCon cells demonstrate superior efficiency at low irradiance levels compared to standard P-type modules. In practice, this translates to higher energy yield during morning and evening hours as well as on partially cloudy days — a factor of particular importance under Polish climatic conditions, where a significant share of annual energy production comes from exactly these low-light scenarios. ### Is DMEGC a reputable PV manufacturer, and is the INFINITY RT series still available? DMEGC (Zhejiang DMEGC Magnetics) is a Chinese manufacturer ranked on the Bloomberg NEF Tier 1 list, with decades of experience in electronics manufacturing and an active photovoltaic segment that has been growing for over a decade. The INFINITY RT series (DMxxxM10RT-B60HBT) is currently in production and available for purchase. The manufacturer holds IEC 61215 and IEC 61730 certifications, as well as test qualifications for resistance to harsh environmental conditions, including ammonia, sand, and salt mist exposure. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/66b9cfcb9cf20-a00e898c76f9.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +2.8 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +2.6 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +2.5 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +2.3 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +2.3 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Cooler, lighter, +2.3 pp | | [DMEGC DM495M10RT-B60HBT-U](https://comparepv.com/panel/dmegc-hengdian-group-dm495m10rt-b60hbt-u) | 495 W | Very close match | | [DMEGC DM500M10RT-B60HBT-U](https://comparepv.com/panel/dmegc-hengdian-group-dm500m10rt-b60hbt-u) | 500 W | +10 W, +0.4 pp | | [DMEGC DM505M10RT-B60HBT-U](https://comparepv.com/panel/dmegc-hengdian-group-dm505m10rt-b60hbt-u) | 505 W | +15 W, +0.6 pp | | [DMEGC DM510M10RT-B60HBT-U](https://comparepv.com/panel/dmegc-hengdian-group-dm510m10rt-b60hbt-u) | 510 W | +20 W, +0.9 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +70 W, cooler, +2.6 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +65 W, cooler, +2.4 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +60 W, lighter, +2.2 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +50 W, lighter, +2.2 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +50 W, lighter, +2.2 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +55 W, cooler, +2.1 pp | --- Source: https://comparepv.com/panel/dmegc-hengdian-group-dm490m10rt-b60hbt-u4 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.