--- title: "JA Solar JAM60D42-530/LB vs JA Solar JAM60D42-535/LB - Solar Panel Comparison | ComparePV" description: "Compare JA Solar JAM60D42-530/LB vs JA Solar JAM60D42-535/LB side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/ja-solar-jam60d42-530-lb-1/ja-solar-jam60d42-535-lb" updated: 2026-09-11 --- # JA Solar JAM60D42-530/LB vs JA Solar JAM60D42-535/LB 535/LB leads on the differences that matter The largest is module efficiency: 0.20 pp more efficient. 18 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [JA Solar JAM60D42-530/LB](https://comparepv.com/panel/ja-solar-jam60d42-530-lb-1) | [JA Solar JAM60D42-535/LB](https://comparepv.com/panel/ja-solar-jam60d42-535-lb) | | Manufacturer | JA Solar | JA Solar | | Power | 530 Wp | 535 Wp | | Efficiency | 22.70 % | 22.90 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 530/LB | 535/LB | Difference | | --- | --- | --- | --- | | Module efficiency | 22.70 % | 22.90 % | +0.20 pp for 535/LB | ## Every compared parameter | Parameter | 530/LB | 535/LB | | --- | --- | --- | | Rated power | 530 Wp | 535 Wp | | Module efficiency | 22.70 % | 22.90 % | | Power density | 226.5 Wp/m² | 228.7 Wp/m² | | Open-circuit voltage | 43.93 V | 44.13 V | | Voltage at max power | 36.81 V | 37.03 V | | Short-circuit current | 15.26 A | 15.31 A | | Current at max power | 14.40 A | 14.45 A | | Temperature coefficient | -0.290 %/°C | -0.290 %/°C | | Dimensions | 2063x1134x30 mm | 2063x1134x30 mm | | Module area | 2.339 m² | 2.339 m² | | Weight | 28.8 kg | 28.8 kg | | Weight per kWp | 54.3 kg/kWp | 53.8 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 | 120 | 120 | | 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 (-0.290 %/°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, 530/LB:** 17,783 kWh - **Cumulative output, 535/LB:** 17,950 kWh - **Gap:** 167 kWh ## Output when hot | Condition | Cell temperature | 530/LB | 535/LB | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 530 W | 535 W | 100.0% of rated power | | Cool, bright day | 40 °C | 507 W | 512 W | 95.7% of rated power | | Typical summer roof | 55 °C | 484 W | 488 W | 91.3% of rated power | | Hot roof | 70 °C | 461 W | 465 W | 87.0% of rated power | ## Against the whole database | Measure | 530/LB | 535/LB | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #3,307 | #2,359 | 14,005 | 535/LB leads by 948 places | | Power density | #3,493 | #2,451 | 14,005 | 535/LB leads by 1,042 places | | Heat behaviour | #2,165 | #2,165 | 14,005 | Tied - the same position in the database | | Weight | #8,635 | #7,892 | 14,005 | 535/LB leads by 743 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #5,934 | #5,507 | 14,005 | 535/LB leads by 427 places | ## Questions ### Which panel is better: JA Solar JAM60D42-530/LB or JA Solar JAM60D42-535/LB? According to our database: **JA Solar JAM60D42-535/LB** has higher module efficiency (**22.90%** vs **22.70%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of JA Solar JAM60D42-530/LB and JA Solar JAM60D42-535/LB? **JA Solar JAM60D42-530/LB** has a module efficiency of **22.70%**, while **JA Solar JAM60D42-535/LB** is **22.90%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does JA Solar JAM60D42-530/LB use vs JA Solar JAM60D42-535/LB? **JA Solar JAM60D42-530/LB** uses **TOPCon** cells; **JA Solar JAM60D42-535/LB** 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 JA Solar JAM60D42-530/LB and JA Solar JAM60D42-535/LB? **JA Solar JAM60D42-530/LB** has a **30 years** power warranty; **JA Solar JAM60D42-535/LB** 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 JA Solar JAM60D42-530/LB and JA Solar JAM60D42-535/LB bifacial panels? Both **JA Solar JAM60D42-530/LB** and **JA Solar JAM60D42-535/LB** 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 - [JA Solar JAM60D42-530/LB vs JA Solar JAM60D42-545/LB](https://comparepv.com/compare/ja-solar-jam60d42-530-lb-1/ja-solar-jam60d42-545-lb) - 3 differences, the largest is module efficiency - [JA Solar JAM60D42-530/LB vs JA Solar JAM60D42-540/LB](https://comparepv.com/compare/ja-solar-jam60d42-530-lb-1/ja-solar-jam60d42-540-lb-1) - 3 differences, the largest is module efficiency - [JA Solar JAM60D42-530/LB vs JA Solar JAM60D42-525/LB](https://comparepv.com/compare/ja-solar-jam60d42-530-lb-1/ja-solar-jam60d42-525-lb) - One difference: module efficiency - [JA Solar JAM60D42-530/LB vs JA Solar JAM60D42-520/LB](https://comparepv.com/compare/ja-solar-jam60d42-530-lb-1/ja-solar-jam60d42-520-lb-1) - 3 differences, the largest is module efficiency - [JA Solar JAM60D42-530/LB vs JA Solar JAM60D41 510/LB](https://comparepv.com/compare/ja-solar-jam60d42-530-lb-1/ja-solar-jam60d41-510-lb) - 8 differences, the largest is rated power - [JA Solar JAM60D42-530/LB vs JA Solar JAM60D41-510/LB](https://comparepv.com/compare/ja-solar-jam60d42-530-lb-1/ja-solar-jam60d41-510-lb-1) - 8 differences, the largest is rated power --- Source: https://comparepv.com/compare/ja-solar-jam60d42-530-lb-1/ja-solar-jam60d42-535-lb 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.