--- title: "Resun Solar RS9H-M TOPCON-720 vs Resun Solar RS9H-M TOPCON-735 - Solar Panel Comparison | ComparePV" description: "Compare Resun Solar RS9H-M TOPCON-720 vs Resun Solar RS9H-M TOPCON-735 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/resun-solar-rs9h-m-topcon-720/resun-solar-rs9h-m-topcon-735" updated: 2026-09-11 --- # Resun Solar RS9H-M TOPCON-720 vs Resun Solar RS9H-M TOPCON-735 735 leads on the differences that matter The largest is module efficiency: 0.48 pp more efficient. 16 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Resun Solar RS9H-M TOPCON-720](https://comparepv.com/panel/resun-solar-rs9h-m-topcon-720) | [Resun Solar RS9H-M TOPCON-735](https://comparepv.com/panel/resun-solar-rs9h-m-topcon-735) | | Manufacturer | Resun Solar | Resun Solar | | Power | 720 Wp | 735 Wp | | Efficiency | 23.18 % | 23.66 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 720 | 735 | Difference | | --- | --- | --- | --- | | Module efficiency | 23.18 % | 23.66 % | +0.48 pp for 735 | | Power density | 231.8 Wp/m² | 236.6 Wp/m² | +4.8 Wp/m² for 735 | | Rated power | 720 Wp | 735 Wp | +15 W for 735 | ## Every compared parameter | Parameter | 720 | 735 | | --- | --- | --- | | Rated power | 720 Wp | 735 Wp | | Module efficiency | 23.18 % | 23.66 % | | Power density | 231.8 Wp/m² | 236.6 Wp/m² | | Open-circuit voltage | 49.40 V | 50.00 V | | Voltage at max power | 41.30 V | 41.90 V | | Short-circuit current | 18.49 A | 18.64 A | | Current at max power | 17.44 A | 17.55 A | | Temperature coefficient | -0.300 %/°C | -0.300 %/°C | | Dimensions | 2384x1303x30 mm | 2384x1303x30 mm | | Module area | 3.106 m² | 3.106 m² | | Weight | 32.3 kg | 32.3 kg | | Weight per kWp | 44.9 kg/kWp | 43.9 kg/kWp | | Product warranty | 15 yrs | 15 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.50 %/yr | 0.50 %/yr | | Cell technology | TOPCon | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 132 | 132 | | Bifacial | No | No | ## Thirty-year yield Declared annual degradation, with a 1.0% first-year loss assumed for both panels because at least one datasheet omits it, 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, 720:** 23,782 kWh - **Cumulative output, 735:** 24,277 kWh - **Gap:** 495 kWh ## Output when hot | Condition | Cell temperature | 720 | 735 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 720 W | 735 W | 100.0% of rated power | | Cool, bright day | 40 °C | 688 W | 702 W | 95.5% of rated power | | Typical summer roof | 55 °C | 655 W | 669 W | 91.0% of rated power | | Hot roof | 70 °C | 623 W | 636 W | 86.5% of rated power | ## Against the whole database | Measure | 720 | 735 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #1,424 | #602 | 14,005 | 735 leads by 822 places | | Power density | #1,347 | #582 | 14,005 | 735 leads by 765 places | | Heat behaviour | #6,093 | #6,093 | 14,005 | Tied - the same position in the database | | Weight | #559 | #364 | 14,005 | 735 leads by 195 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #325 | #149 | 14,005 | 735 leads by 176 places | ## Questions ### Which panel is better: Resun Solar RS9H-M TOPCON-720 or Resun Solar RS9H-M TOPCON-735? According to our database: **Resun Solar RS9H-M TOPCON-735** has higher module efficiency (**23.66%** vs **23.18%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Resun Solar RS9H-M TOPCON-720 and Resun Solar RS9H-M TOPCON-735? **Resun Solar RS9H-M TOPCON-720** has a module efficiency of **23.18%**, while **Resun Solar RS9H-M TOPCON-735** is **23.66%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Resun Solar RS9H-M TOPCON-720 use vs Resun Solar RS9H-M TOPCON-735? **Resun Solar RS9H-M TOPCON-720** uses **TOPCon** cells; **Resun Solar RS9H-M TOPCON-735** 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 Resun Solar RS9H-M TOPCON-720 and Resun Solar RS9H-M TOPCON-735? **Resun Solar RS9H-M TOPCON-720** has a **30 years** power warranty; **Resun Solar RS9H-M TOPCON-735** 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. ## Related comparisons - [Resun Solar RS9H-M TOPCON-720 vs Resun Solar RS9H-M TOPCON-730](https://comparepv.com/compare/resun-solar-rs9h-m-topcon-720/resun-solar-rs9h-m-topcon-730) - 3 differences, the largest is module efficiency - [Resun Solar RS9H-M TOPCON-720 vs Resun Solar RS9H-M TOPCON-725](https://comparepv.com/compare/resun-solar-rs9h-m-topcon-720/resun-solar-rs9h-m-topcon-725) - The same specification on paper - [Resun Solar RS9H-M TOPCON-720 vs Resun Solar RS9H-M-720](https://comparepv.com/compare/resun-solar-rs9h-m-topcon-720/resun-solar-rs9h-m-720) - One difference: dimensions - [Resun Solar RS9H-M TOPCON-720 vs Resun Solar RS9H-M-DG-720](https://comparepv.com/compare/resun-solar-rs9h-m-topcon-720/resun-solar-rs9h-m-dg-720) - 4 differences, the largest is weight - [Resun Solar RS9H-M TOPCON-720 vs Resun Solar RS9H-M-715](https://comparepv.com/compare/resun-solar-rs9h-m-topcon-720/resun-solar-rs9h-m-715) - One difference: dimensions - [Resun Solar RS9H-M TOPCON-720 vs Resun Solar RS9H-M-DG-715](https://comparepv.com/compare/resun-solar-rs9h-m-topcon-720/resun-solar-rs9h-m-dg-715) - 4 differences, the largest is weight --- Source: https://comparepv.com/compare/resun-solar-rs9h-m-topcon-720/resun-solar-rs9h-m-topcon-735 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.