--- title: "Astronergy CHSM66RN(DG)/F-BH-605 vs Astronergy CHSM66RN(DG)/F-BQ-660 - Solar Panel Comparison | ComparePV" description: "Compare Astronergy CHSM66RN(DG)/F-BH-605 vs Astronergy CHSM66RN(DG)/F-BQ-660 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/astronergy-chsm66rn-dg-f-bh-605/astronergy-chsm66rn-dg-f-bq-660" updated: 2026-09-11 --- # Astronergy CHSM66RN(DG)/F-BH-605 vs Astronergy CHSM66RN(DG)/F-BQ-660 BQ-660 leads on the differences that matter The largest is module efficiency: 2.00 pp more efficient. 9 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Astronergy CHSM66RN(DG)/F-BH-605](https://comparepv.com/panel/astronergy-chsm66rn-dg-f-bh-605) | [Astronergy CHSM66RN(DG)/F-BQ-660](https://comparepv.com/panel/astronergy-chsm66rn-dg-f-bq-660) | | Manufacturer | Astronergy | Astronergy | | Power | 605 Wp | 660 Wp | | Efficiency | 22.40 % | 24.40 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | BH-605 | BQ-660 | Difference | | --- | --- | --- | --- | | Module efficiency | 22.40 % | 24.40 % | +2.00 pp for BQ-660 | | Rated power | 605 Wp | 660 Wp | +55 W for BQ-660 | | Power density | 224.0 Wp/m² | 244.3 Wp/m² | +20.4 Wp/m² for BQ-660 | | Temperature coefficient | -0.290 %/°C | -0.260 %/°C | +0.030 %/°C for BQ-660 | | Weight per kWp | 55.4 kg/kWp | 48.5 kg/kWp | -6.9 kg/kWp for BQ-660 | | Weight | 33.5 kg | 32.0 kg | -1.5 kg for BQ-660 | | Annual degradation | 0.40 %/yr | 0.35 %/yr | -0.05 %/yr for BQ-660 | | Cell count | 132 | 264 | 132 cells apart | | Short-circuit current | 15.86 A | 16.72 A | 0.86 A apart | | Current at max power | 14.69 A | 15.94 A | 1.25 A apart | ## Every compared parameter | Parameter | BH-605 | BQ-660 | | --- | --- | --- | | Rated power | 605 Wp | 660 Wp | | Module efficiency | 22.40 % | 24.40 % | | Power density | 224.0 Wp/m² | 244.3 Wp/m² | | Open-circuit voltage | 48.59 V | 49.28 V | | Voltage at max power | 41.18 V | 41.40 V | | Short-circuit current | 15.86 A | 16.72 A | | Current at max power | 14.69 A | 15.94 A | | Temperature coefficient | -0.290 %/°C | -0.260 %/°C | | Dimensions | 2382x1134x30 mm | 2382x1134x30 mm | | Module area | 2.701 m² | 2.701 m² | | Weight | 33.5 kg | 32.0 kg | | Weight per kWp | 55.4 kg/kWp | 48.5 kg/kWp | | Product warranty | 15 yrs | 15 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.40 %/yr | 0.35 %/yr | | Cell technology | TOPCon | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 132 | 264 | | Bifacial | Yes | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, BH-605:** 20,299 kWh - **Cumulative output, BQ-660:** 22,317 kWh - **Gap:** 2,018 kWh ## Output when hot | Condition | Cell temperature | BH-605 | BQ-660 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 605 W | 660 W | 100.0% of rated power | | Cool, bright day | 40 °C | 579 W | 634 W | 95.7% of rated power | | Typical summer roof | 55 °C | 552 W | 609 W | 91.3% of rated power | | Hot roof | 70 °C | 526 W | 583 W | 87.0% of rated power | ## Against the whole database | Measure | BH-605 | BQ-660 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #4,774 | #99 | 14,005 | BQ-660 leads by 4,675 places | | Power density | #4,780 | #88 | 14,005 | BQ-660 leads by 4,692 places | | Heat behaviour | #2,165 | #511 | 14,005 | BQ-660 leads by 1,654 places | | Weight | #9,806 | #2,313 | 14,005 | BQ-660 leads by 7,493 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #3,097 | #562 | 14,005 | BQ-660 leads by 2,535 places | ## Questions ### Which panel is better: Astronergy CHSM66RN(DG)/F-BH-605 or Astronergy CHSM66RN(DG)/F-BQ-660? According to our database: **Astronergy CHSM66RN(DG)/F-BQ-660** has higher module efficiency (**24.40%** vs **22.40%**); **Astronergy CHSM66RN(DG)/F-BQ-660** tolerates heat better (temp coeff **-0.260%/°C** vs **-0.290%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Astronergy CHSM66RN(DG)/F-BH-605 and Astronergy CHSM66RN(DG)/F-BQ-660? **Astronergy CHSM66RN(DG)/F-BH-605** has a module efficiency of **22.40%**, while **Astronergy CHSM66RN(DG)/F-BQ-660** is **24.40%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Astronergy CHSM66RN(DG)/F-BH-605 use vs Astronergy CHSM66RN(DG)/F-BQ-660? **Astronergy CHSM66RN(DG)/F-BH-605** uses **TOPCon** cells; **Astronergy CHSM66RN(DG)/F-BQ-660** 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 Astronergy CHSM66RN(DG)/F-BH-605 and Astronergy CHSM66RN(DG)/F-BQ-660? **Astronergy CHSM66RN(DG)/F-BH-605** has a **30 years** power warranty; **Astronergy CHSM66RN(DG)/F-BQ-660** 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 Astronergy CHSM66RN(DG)/F-BH-605 and Astronergy CHSM66RN(DG)/F-BQ-660 bifacial panels? Both **Astronergy CHSM66RN(DG)/F-BH-605** and **Astronergy CHSM66RN(DG)/F-BQ-660** 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 - [Astronergy CHSM66RN(DG)/F-BH-605 vs Astronergy CHSM66RN(DG)/F-BQ-670](https://comparepv.com/compare/astronergy-chsm66rn-dg-f-bh-605/astronergy-chsm66rn-dg-f-bq-670) - 10 differences, the largest is module efficiency - [Astronergy CHSM66RN(DG)/F-BH-605 vs Astronergy CHSM66RN(DG)/F-BQ](https://comparepv.com/compare/astronergy-chsm66rn-dg-f-bh-605/astronergy-chsm66rn-dg-f-bq) - 10 differences, the largest is module efficiency - [Astronergy CHSM66RN(DG)/F-BH-605 vs Astronergy CHSM66RN(DG)/F-BQ-665](https://comparepv.com/compare/astronergy-chsm66rn-dg-f-bh-605/astronergy-chsm66rn-dg-f-bq-665) - 10 differences, the largest is module efficiency - [Astronergy CHSM66RN(DG)/F-BH-605 vs Astronergy CHSM66RN(DG)/F-BQ-655](https://comparepv.com/compare/astronergy-chsm66rn-dg-f-bh-605/astronergy-chsm66rn-dg-f-bq-655) - 10 differences, the largest is module efficiency - [Astronergy CHSM66RN(DG)/F-BH-605 vs Astronergy CHSM66RN(DG)/F-BH-650W](https://comparepv.com/compare/astronergy-chsm66rn-dg-f-bh-605/astronergy-chint-new-energy-technology-co-ltd-chsm66rn-dg-f-bh-650w) - 9 differences, the largest is module efficiency - [Astronergy CHSM66RN(DG)/F-BH-605 vs Astronergy CHSM66RN(DG)/F-BH-650](https://comparepv.com/compare/astronergy-chsm66rn-dg-f-bh-605/astronergy-chsm66rn-dg-f-bh-650) - 9 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/astronergy-chsm66rn-dg-f-bh-605/astronergy-chsm66rn-dg-f-bq-660 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.