--- title: "VSUN VSUN440N-96BMHR-DG-BB vs VSUN VSUN445N-96BMHR-DG-BB - Solar Panel Comparison | ComparePV" description: "Compare VSUN VSUN440N-96BMHR-DG-BB vs VSUN VSUN445N-96BMHR-DG-BB side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/vsun-vsun440n-96bmhr-dg-bb/vsun-vsun445n-96bmhr-dg-bb" image: "https://comparepv.com/og/compare/panels/vsun-vsun440n-96bmhr-dg-bb/vsun-vsun445n-96bmhr-dg-bb.png" updated: 2026-09-11 --- # VSUN VSUN440N-96BMHR-DG-BB vs VSUN VSUN445N-96BMHR-DG-BB VSUN445N-96BMHR-DG-BB leads on the differences that matter The largest is module efficiency: 0.25 pp more efficient. 18 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [VSUN VSUN440N-96BMHR-DG-BB](https://comparepv.com/panel/vsun-vsun440n-96bmhr-dg-bb) | [VSUN VSUN445N-96BMHR-DG-BB](https://comparepv.com/panel/vsun-vsun445n-96bmhr-dg-bb) | | Manufacturer | VSUN | VSUN | | Power | 440 Wp | 445 Wp | | Efficiency | 22.02 % | 22.27 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | VSUN440N-96BMHR-DG-BB | VSUN445N-96BMHR-DG-BB | Difference | | --- | --- | --- | --- | | Module efficiency | 22.02 % | 22.27 % | +0.25 pp for VSUN445N-96BMHR-DG-BB | ## Every compared parameter | Parameter | VSUN440N-96BMHR-DG-BB | VSUN445N-96BMHR-DG-BB | | --- | --- | --- | | Rated power | 440 Wp | 445 Wp | | Module efficiency | 22.02 % | 22.27 % | | Power density | 220.2 Wp/m² | 222.7 Wp/m² | | Open-circuit voltage | 34.77 V | 34.95 V | | Voltage at max power | 29.72 V | 29.90 V | | Short-circuit current | 15.95 A | 16.00 A | | Current at max power | 14.81 A | 14.89 A | | Temperature coefficient | -0.300 %/°C | -0.300 %/°C | | Dimensions | 1762x1134x30 mm | 1762x1134x30 mm | | Module area | 1.998 m² | 1.998 m² | | Weight | 25.0 kg | 25.0 kg | | Weight per kWp | 56.8 kg/kWp | 56.2 kg/kWp | | Product warranty | 12 yrs | 12 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.40 %/yr | 0.40 %/yr | | Cell technology | TOPCon | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 96 | 96 | | Bifacial | Yes | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.300 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other. - **Cumulative output, VSUN440N-96BMHR-DG-BB:** 14,763 kWh - **Cumulative output, VSUN445N-96BMHR-DG-BB:** 14,931 kWh - **Gap:** 168 kWh ## Output when hot | Condition | Cell temperature | VSUN440N-96BMHR-DG-BB | VSUN445N-96BMHR-DG-BB | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 440 W | 445 W | 100.0% of rated power | | Cool, bright day | 40 °C | 420 W | 425 W | 95.5% of rated power | | Typical summer roof | 55 °C | 400 W | 405 W | 91.0% of rated power | | Hot roof | 70 °C | 381 W | 385 W | 86.5% of rated power | ## Against the whole database | Measure | VSUN440N-96BMHR-DG-BB | VSUN445N-96BMHR-DG-BB | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #6,392 | #5,544 | 14,129 | VSUN445N-96BMHR-DG-BB leads by 848 places | | Power density | #6,391 | #5,365 | 14,129 | VSUN445N-96BMHR-DG-BB leads by 1,026 places | | Heat behaviour | #6,152 | #6,152 | 14,129 | Tied - the same position in the database | | Weight | #10,964 | #10,542 | 14,129 | VSUN445N-96BMHR-DG-BB leads by 422 places | | Warranty | #21 | #21 | 14,129 | Tied - the same position in the database | | Overall | #9,916 | #9,553 | 14,129 | VSUN445N-96BMHR-DG-BB leads by 363 places | ## Questions ### Which panel is better: VSUN VSUN440N-96BMHR-DG-BB or VSUN VSUN445N-96BMHR-DG-BB? According to our database: **VSUN VSUN445N-96BMHR-DG-BB** has higher module efficiency (**22.27%** vs **22.02%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of VSUN VSUN440N-96BMHR-DG-BB and VSUN VSUN445N-96BMHR-DG-BB? **VSUN VSUN440N-96BMHR-DG-BB** has a module efficiency of **22.02%**, while **VSUN VSUN445N-96BMHR-DG-BB** is **22.27%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does VSUN VSUN440N-96BMHR-DG-BB use vs VSUN VSUN445N-96BMHR-DG-BB? **VSUN VSUN440N-96BMHR-DG-BB** uses **TOPCon** cells; **VSUN VSUN445N-96BMHR-DG-BB** uses **TOPCon**. Modern **n-type** technologies (**TOPCon**, **HJT**, BC) typically deliver higher efficiency and lower degradation compared to older **PERC** (p-type) cells. ### What is the warranty on VSUN VSUN440N-96BMHR-DG-BB and VSUN VSUN445N-96BMHR-DG-BB? **VSUN VSUN440N-96BMHR-DG-BB** has a **30 years** power warranty; **VSUN VSUN445N-96BMHR-DG-BB** has a **30 years** power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80**-87%**). Product (materials) warranties are usually shorter. ### Are VSUN VSUN440N-96BMHR-DG-BB and VSUN VSUN445N-96BMHR-DG-BB bifacial panels? Both **VSUN VSUN440N-96BMHR-DG-BB** and **VSUN VSUN445N-96BMHR-DG-BB** are bifacial - they capture reflected light from the ground, which can add 5**-15%** more annual energy on ground-mount or elevated rooftop installations with a light surface beneath. ## Related comparisons - [VSUN VSUN440N-96BMHR-DG-BB vs VSUN VSUN460N-96BMHR-DG-BB](https://comparepv.com/compare/vsun-vsun440n-96bmhr-dg-bb/vsun-vsun460n-96bmhr-dg-bb) - 4 differences, the largest is module efficiency - [VSUN VSUN440N-96BMHR-DG-BB vs VSUN VSUN455N-96BMHR-DG-BB](https://comparepv.com/compare/vsun-vsun440n-96bmhr-dg-bb/vsun-vsun455n-96bmhr-dg-bb) - 3 differences, the largest is module efficiency - [VSUN VSUN440N-96BMHR-DG-BB vs VSUN VSUN450N-96BMHR-DG-BB](https://comparepv.com/compare/vsun-vsun440n-96bmhr-dg-bb/vsun-vsun450n-96bmhr-dg-bb) - 3 differences, the largest is module efficiency - [VSUN VSUN440N-96BMHR-DG-BB vs VSUN VSUN435N-96BMHR-DG-BB](https://comparepv.com/compare/vsun-vsun440n-96bmhr-dg-bb/vsun-vsun435n-96bmhr-dg-bb) - One difference: module efficiency - [VSUN VSUN440N-96BMHR-DG-BB vs VSUN VSUN715N-132BMHT-DG](https://comparepv.com/compare/vsun-vsun440n-96bmhr-dg-bb/vsun-vsun715n-132bmht-dg) - 12 differences, the largest is module efficiency - [VSUN VSUN440N-96BMHR-DG-BB vs VSUN VSUN710N-132BMHT-DG](https://comparepv.com/compare/vsun-vsun440n-96bmhr-dg-bb/vsun-vsun710n-132bmht-dg) - 12 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/vsun-vsun440n-96bmhr-dg-bb/vsun-vsun445n-96bmhr-dg-bb Not in this file, on the page: the thirty-year yield curve year by year at a cell temperature you pick and a written summary generated on request.