--- title: "Aptos Solar DNA-144-BF10-540W-DG vs Waaree Bi-55-540 - Solar Panel Comparison | ComparePV" description: "Compare Aptos Solar DNA-144-BF10-540W-DG vs Waaree Bi-55-540 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/waaree-bi-55-540" updated: 2026-09-11 --- # Aptos Solar DNA-144-BF10-540W-DG vs Waaree Bi-55-540 DNA-144-BF10-540W-DG leads on the differences that matter The largest is product warranty: 18 yrs longer. 14 of 19 comparable parameters are identical. ## 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) | [Waaree Bi-55-540](https://comparepv.com/panel/waaree-bi-55-540) | | Manufacturer | Aptos Solar | Waaree | | Power | 540 Wp | 540 Wp | | Efficiency | 20.90 % | 20.98 % | | Technology | PERC | PERC | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | DNA-144-BF10-540W-DG | Bi-55-540 | Difference | | --- | --- | --- | --- | | Product warranty | 30 yrs | 12 yrs | +18 yrs for DNA-144-BF10-540W-DG | | Temperature coefficient | -0.335 %/°C | -0.350 %/°C | +0.015 %/°C for DNA-144-BF10-540W-DG | | Voltage at max power | 43.84 V | 41.75 V | 2.09 V apart | | Dimensions | 2278x1134x35 mm | 2272x1133x35 mm | 2278x1134x35 mm vs 2272x1133x35 mm | | Current at max power | 12.32 A | 12.95 A | 0.63 A apart | ## Every compared parameter | Parameter | DNA-144-BF10-540W-DG | Bi-55-540 | | --- | --- | --- | | Rated power | 540 Wp | 540 Wp | | Module efficiency | 20.90 % | 20.98 % | | Power density | 209.0 Wp/m² | 209.8 Wp/m² | | Open-circuit voltage | 49.50 V | 49.61 V | | Voltage at max power | 43.84 V | 41.75 V | | Short-circuit current | 13.85 A | 13.83 A | | Current at max power | 12.32 A | 12.95 A | | Temperature coefficient | -0.335 %/°C | -0.350 %/°C | | Dimensions | 2278x1134x35 mm | 2272x1133x35 mm | | Module area | 2.583 m² | 2.574 m² | | Weight | 32.3 kg | 32.5 kg | | Weight per kWp | 59.8 kg/kWp | 60.2 kg/kWp | | Product warranty | 30 yrs | 12 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.54 %/yr | 0.55 %/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 - **Cumulative output, DNA-144-BF10-540W-DG:** 17,535 kWh - **Cumulative output, Bi-55-540:** 17,501 kWh - **Gap:** 34 kWh ## Output when hot | Condition | Cell temperature | DNA-144-BF10-540W-DG | Bi-55-540 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 540 W | 540 W | 100.0% of rated power | | Cool, bright day | 40 °C | 513 W | 512 W | 94.8% of rated power | | Typical summer roof | 55 °C | 486 W | 483 W | 89.5% of rated power | | Hot roof | 70 °C | 459 W | 455 W | 84.2% of rated power | ## Against the whole database | Measure | DNA-144-BF10-540W-DG | Bi-55-540 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #10,072 | #9,963 | 14,005 | Bi-55-540 leads by 109 places | | Power density | #10,100 | #9,905 | 14,005 | Bi-55-540 leads by 195 places | | Heat behaviour | #8,753 | #10,419 | 14,005 | DNA-144-BF10-540W-DG leads by 1,666 places | | Weight | #12,294 | #12,384 | 14,005 | DNA-144-BF10-540W-DG leads by 90 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #4,039 | #7,782 | 14,005 | DNA-144-BF10-540W-DG leads by 3,743 places | ## Questions ### Which panel is better: Aptos Solar DNA-144-BF10-540W-DG or Waaree Bi-55-540? According to our database: **Waaree Bi-55-540** has higher module efficiency (**20.98%** vs **20.90%**); **Aptos Solar DNA-144-BF10-**540 W**-DG** tolerates heat better (temp coeff **-0.335%/°C** vs **-0.350%/°C**). 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 Waaree Bi-55-540? **Aptos Solar DNA-144-BF10-**540 W**-DG** has a module efficiency of **20.90%**, while **Waaree Bi-55-540** is **20.98%**. 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 Waaree Bi-55-540? **Aptos Solar DNA-144-BF10-**540 W**-DG** uses **PERC** cells; **Waaree Bi-55-540** 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 Waaree Bi-55-540? **Aptos Solar DNA-144-BF10-**540 W**-DG** has a **30 years** power warranty; **Waaree Bi-55-540** 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 Waaree Bi-55-540 bifacial panels? Both **Aptos Solar DNA-144-BF10-**540 W**-DG** and **Waaree Bi-55-540** 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-144-BF10-545W-DG](https://comparepv.com/compare/aptos-solar-dna-144-bf10-540w-dg/aptos-solar-dna-144-bf10-545w-dg) - The same specification on paper - [Waaree Bi-55-540 vs Waaree Bi-68-665](https://comparepv.com/compare/waaree-bi-55-540/waaree-bi-68-665) - 12 differences, the largest is rated power - [Waaree Bi-55-540 vs Waaree Bi-68-660](https://comparepv.com/compare/waaree-bi-55-540/waaree-bi-68-660) - 10 differences, the largest is rated power - [Waaree Bi-55-540 vs Waaree Bi-68-655](https://comparepv.com/compare/waaree-bi-55-540/waaree-bi-68-655) - 10 differences, the largest is rated power - [Waaree Bi-55-540 vs Waaree Bi-68-650](https://comparepv.com/compare/waaree-bi-55-540/waaree-bi-68-650) - 10 differences, the largest is rated power --- Source: https://comparepv.com/compare/aptos-solar-dna-144-bf10-540w-dg/waaree-bi-55-540 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.