--- title: "Aptos Solar DNA-144-BF10-540W-DG vs Aptos Solar DNA-144-BF10-545W-DG - Solar Panel Comparison | ComparePV" description: "Compare Aptos Solar DNA-144-BF10-540W-DG vs Aptos Solar DNA-144-BF10-545W-DG side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/aptos-solar-dna-144-bf10-540w-dg/aptos-solar-dna-144-bf10-545w-dg" updated: 2026-09-11 --- # Aptos Solar DNA-144-BF10-540W-DG vs Aptos Solar DNA-144-BF10-545W-DG Identical on every published parameter All 19 comparable parameters agree. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Aptos Solar DNA-144-BF10-540W-DG](https://comparepv.com/panel/aptos-solar-dna-144-bf10-540w-dg) | [Aptos Solar DNA-144-BF10-545W-DG](https://comparepv.com/panel/aptos-solar-dna-144-bf10-545w-dg) | | Manufacturer | Aptos Solar | Aptos Solar | | Power | 540 Wp | 545 Wp | | Efficiency | 20.90 % | 21.09 % | | Technology | PERC | PERC | ## Every compared parameter | Parameter | 540W-DG | 545W-DG | | --- | --- | --- | | Rated power | 540 Wp | 545 Wp | | Module efficiency | 20.90 % | 21.09 % | | Power density | 209.0 Wp/m² | 211.0 Wp/m² | | Open-circuit voltage | 49.50 V | 49.65 V | | Voltage at max power | 43.84 V | 44.00 V | | Short-circuit current | 13.85 A | 13.92 A | | Current at max power | 12.32 A | 12.38 A | | Temperature coefficient | -0.335 %/°C | -0.335 %/°C | | Dimensions | 2278x1134x35 mm | 2278x1134x35 mm | | Module area | 2.583 m² | 2.583 m² | | Weight | 32.3 kg | 32.3 kg | | Weight per kWp | 59.8 kg/kWp | 59.3 kg/kWp | | Product warranty | 30 yrs | 30 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.54 %/yr | 0.54 %/yr | | Cell technology | PERC | PERC | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 144 | 144 | | 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 (-0.335 %/°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, 540W-DG:** 17,535 kWh - **Cumulative output, 545W-DG:** 17,697 kWh - **Gap:** 162 kWh ## Output when hot | Condition | Cell temperature | 540W-DG | 545W-DG | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 540 W | 545 W | 100.0% of rated power | | Cool, bright day | 40 °C | 513 W | 518 W | 95.0% of rated power | | Typical summer roof | 55 °C | 486 W | 490 W | 90.0% of rated power | | Hot roof | 70 °C | 459 W | 463 W | 84.9% of rated power | ## Against the whole database | Measure | 540W-DG | 545W-DG | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #10,072 | #9,519 | 14,005 | 545W-DG leads by 553 places | | Power density | #10,100 | #9,312 | 14,005 | 545W-DG leads by 788 places | | Heat behaviour | #8,753 | #8,753 | 14,005 | Tied - the same position in the database | | Weight | #12,294 | #12,093 | 14,005 | 545W-DG leads by 201 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #4,039 | #3,650 | 14,005 | 545W-DG leads by 389 places | ## Questions ### Which panel is better: Aptos Solar DNA-144-BF10-540W-DG or Aptos Solar DNA-144-BF10-545W-DG? According to our database: **Aptos Solar DNA-144-BF10-**545 W**-DG** has higher module efficiency (**21.09%** vs **20.90%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Aptos Solar DNA-144-BF10-540W-DG and Aptos Solar DNA-144-BF10-545W-DG? **Aptos Solar DNA-144-BF10-**540 W**-DG** has a module efficiency of **20.90%**, while **Aptos Solar DNA-144-BF10-**545 W**-DG** is **21.09%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Aptos Solar DNA-144-BF10-540W-DG use vs Aptos Solar DNA-144-BF10-545W-DG? **Aptos Solar DNA-144-BF10-**540 W**-DG** uses **PERC** cells; **Aptos Solar DNA-144-BF10-**545 W**-DG** uses **PERC**. 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 Aptos Solar DNA-144-BF10-540W-DG and Aptos Solar DNA-144-BF10-545W-DG? **Aptos Solar DNA-144-BF10-**540 W**-DG** has a **30 years** power warranty; **Aptos Solar DNA-144-BF10-**545 W**-DG** 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 Aptos Solar DNA-144-BF10-540W-DG and Aptos Solar DNA-144-BF10-545W-DG bifacial panels? Both **Aptos Solar DNA-144-BF10-**540 W**-DG** and **Aptos Solar DNA-144-BF10-**545 W**-DG** 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 - [Aptos Solar DNA-144-BF10-540W-DG vs Aptos Solar DNA-144-BF10-550W-DG](https://comparepv.com/compare/aptos-solar-dna-144-bf10-540w-dg/aptos-solar-dna-144-bf10-550w-dg) - 3 differences, the largest is module efficiency - [Aptos Solar DNA-144-BF10-540W-DG vs Aptos Solar DNA-120-MF10-460W](https://comparepv.com/compare/aptos-solar-dna-144-bf10-540w-dg/aptos-solar-dna-120-mf10-460w) - 12 differences, the largest is rated power - [Aptos Solar DNA-144-BF10-540W-DG vs Aptos Solar DNA-120-BF10-460W](https://comparepv.com/compare/aptos-solar-dna-144-bf10-540w-dg/aptos-solar-dna-120-bf10-460w) - 12 differences, the largest is rated power - [Aptos Solar DNA-144-BF10-540W-DG vs Aptos Solar DNA-120-MF10-455W](https://comparepv.com/compare/aptos-solar-dna-144-bf10-540w-dg/aptos-solar-dna-120-mf10-455w) - 10 differences, the largest is rated power - [Aptos Solar DNA-144-BF10-540W-DG vs Aptos Solar DNA-120-BF10-455W](https://comparepv.com/compare/aptos-solar-dna-144-bf10-540w-dg/aptos-solar-dna-120-bf10-455w) - 10 differences, the largest is rated power - [Aptos Solar DNA-144-BF10-540W-DG vs Aptos Solar DNA-144-MF26-450W](https://comparepv.com/compare/aptos-solar-dna-144-bf10-540w-dg/aptos-solar-dna-144-mf26-450w) - 11 differences, the largest is temperature coefficient --- Source: https://comparepv.com/compare/aptos-solar-dna-144-bf10-540w-dg/aptos-solar-dna-144-bf10-545w-dg 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.