--- title: "ZNShine ZXM7-UHLD108-425/N vs ZNShine ZXM7-UHLDD108-435 - Solar Panel Comparison | ComparePV" description: "Compare ZNShine ZXM7-UHLD108-425/N vs ZNShine ZXM7-UHLDD108-435 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/znshine-zxm7-uhld108-425-n/znshine-zxm7-uhldd108-435" updated: 2026-09-11 --- # ZNShine ZXM7-UHLD108-425/N vs ZNShine ZXM7-UHLDD108-435 UHLDD108-435 leads on the differences that matter The largest is module efficiency: 0.52 pp more efficient. 15 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [ZNShine ZXM7-UHLD108-425/N](https://comparepv.com/panel/znshine-zxm7-uhld108-425-n) | [ZNShine ZXM7-UHLDD108-435](https://comparepv.com/panel/znshine-zxm7-uhldd108-435) | | Manufacturer | ZNShine | ZNShine | | Power | 425 Wp | 435 Wp | | Efficiency | 21.76 % | 22.28 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | UHLD108-425/N | UHLDD108-435 | Difference | | --- | --- | --- | --- | | Module efficiency | 21.76 % | 22.28 % | +0.52 pp for UHLDD108-435 | | Product warranty | 15 yrs | 12 yrs | +3 yrs for UHLD108-425/N | | Power density | 217.6 Wp/m² | 222.8 Wp/m² | +5.1 Wp/m² for UHLDD108-435 | | Rated power | 425 Wp | 435 Wp | +10 W for UHLDD108-435 | ## Every compared parameter | Parameter | UHLD108-425/N | UHLDD108-435 | | --- | --- | --- | | Rated power | 425 Wp | 435 Wp | | Module efficiency | 21.76 % | 22.28 % | | Power density | 217.6 Wp/m² | 222.8 Wp/m² | | Open-circuit voltage | 38.30 V | 38.60 V | | Voltage at max power | 31.70 V | 32.10 V | | Short-circuit current | 14.12 A | 14.32 A | | Current at max power | 13.41 A | 13.56 A | | Temperature coefficient | -0.300 %/°C | -0.300 %/°C | | Dimensions | 1722x1134x30 mm | 1722x1134x30 mm | | Module area | 1.953 m² | 1.953 m² | | Weight | 24.5 kg | 24.5 kg | | Weight per kWp | 57.6 kg/kWp | 56.3 kg/kWp | | Product warranty | 15 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 | 108 | 108 | | 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, UHLD108-425/N:** 14,260 kWh - **Cumulative output, UHLDD108-435:** 14,595 kWh - **Gap:** 335 kWh ## Output when hot | Condition | Cell temperature | UHLD108-425/N | UHLDD108-435 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 425 W | 435 W | 100.0% of rated power | | Cool, bright day | 40 °C | 406 W | 415 W | 95.5% of rated power | | Typical summer roof | 55 °C | 387 W | 396 W | 91.0% of rated power | | Hot roof | 70 °C | 368 W | 376 W | 86.5% of rated power | ## Against the whole database | Measure | UHLD108-425/N | UHLDD108-435 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #7,285 | #5,403 | 14,005 | UHLDD108-435 leads by 1,882 places | | Power density | #7,172 | #5,150 | 14,005 | UHLDD108-435 leads by 2,022 places | | Heat behaviour | #6,093 | #6,093 | 14,005 | Tied - the same position in the database | | Weight | #11,325 | #10,568 | 14,005 | UHLDD108-435 leads by 757 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #10,001 | #9,772 | 14,005 | UHLDD108-435 leads by 229 places | ## Questions ### Which panel is better: ZNShine ZXM7-UHLD108-425/N or ZNShine ZXM7-UHLDD108-435? According to our database: **ZNShine ZXM7-UHLDD108-435** has higher module efficiency (**22.28%** vs **21.76%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of ZNShine ZXM7-UHLD108-425/N and ZNShine ZXM7-UHLDD108-435? **ZNShine ZXM7-UHLD108-425/N** has a module efficiency of **21.76%**, while **ZNShine ZXM7-UHLDD108-435** is **22.28%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does ZNShine ZXM7-UHLD108-425/N use vs ZNShine ZXM7-UHLDD108-435? **ZNShine ZXM7-UHLD108-425/N** uses **TOPCon** cells; **ZNShine ZXM7-UHLDD108-435** 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 ZNShine ZXM7-UHLD108-425/N and ZNShine ZXM7-UHLDD108-435? **ZNShine ZXM7-UHLD108-425/N** has a **30 years** power warranty; **ZNShine ZXM7-UHLDD108-435** 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 ZNShine ZXM7-UHLD108-425/N and ZNShine ZXM7-UHLDD108-435 bifacial panels? Both **ZNShine ZXM7-UHLD108-425/N** and **ZNShine ZXM7-UHLDD108-435** 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 - [ZNShine ZXM7-UHLD108-425/N vs ZNShine ZXM7-UHLD108-440/N](https://comparepv.com/compare/znshine-zxm7-uhld108-425-n/znshine-zxm7-uhld108-440-n) - 3 differences, the largest is module efficiency - [ZNShine ZXM7-UHLD108-425/N vs ZNShine ZXM7-UHLD108-435/N](https://comparepv.com/compare/znshine-zxm7-uhld108-425-n/znshine-zxm7-uhld108-435-n) - 3 differences, the largest is module efficiency - [ZNShine ZXM7-UHLD108-425/N vs ZNShine ZXM7-UHLD108-430/N](https://comparepv.com/compare/znshine-zxm7-uhld108-425-n/znshine-zxm7-uhld108-430-n) - One difference: module efficiency - [ZNShine ZXM7-UHLD108-425/N vs ZNShine ZXM7-UHLDD108-430](https://comparepv.com/compare/znshine-zxm7-uhld108-425-n/znshine-zxm7-uhldd108-430) - 2 differences, the largest is product warranty - [ZNShine ZXM7-UHLD108-425/N vs ZNShine ZXM7-UHLDD108-425](https://comparepv.com/compare/znshine-zxm7-uhld108-425-n/znshine-zxm7-uhldd108-425) - One difference: product warranty - [ZNShine ZXM7-UHLD108-425/N vs ZNShine ZXM7-UHLDD108-420](https://comparepv.com/compare/znshine-zxm7-uhld108-425-n/znshine-zxm7-uhldd108-420) - 2 differences, the largest is product warranty --- Source: https://comparepv.com/compare/znshine-zxm7-uhld108-425-n/znshine-zxm7-uhldd108-435 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.