--- title: "Astronergy CHSM78N(DG)/F-BH-650 vs Astronergy CHSM78N(DG)/F-BH-650W - Solar Panel Comparison | ComparePV" description: "Compare Astronergy CHSM78N(DG)/F-BH-650 vs Astronergy CHSM78N(DG)/F-BH-650W side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-650/astronergy-chsm78n-dg-f-bh-650w" updated: 2026-09-11 --- # Astronergy CHSM78N(DG)/F-BH-650 vs Astronergy CHSM78N(DG)/F-BH-650W 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 | [Astronergy CHSM78N(DG)/F-BH-650](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-650) | [Astronergy CHSM78N(DG)/F-BH-650W](https://comparepv.com/panel/astronergy-chsm78n-dg-f-bh-650w) | | Manufacturer | Astronergy | Astronergy | | Power | 650 Wp | 650 Wp | | Efficiency | 23.30 % | 23.30 % | | Technology | TOPCon | TOPCon | ## Every compared parameter | Parameter | 650 | 650W | | --- | --- | --- | | Rated power | 650 Wp | 650 Wp | | Module efficiency | 23.30 % | 23.30 % | | Power density | 232.5 Wp/m² | 232.5 Wp/m² | | Open-circuit voltage | 57.01 V | 57.01 V | | Voltage at max power | 47.12 V | 47.12 V | | Short-circuit current | 14.51 A | 14.51 A | | Current at max power | 13.80 A | 13.80 A | | Temperature coefficient | -0.290 %/°C | -0.290 %/°C | | Dimensions | 2465x1134x30 mm | 2465x1134x30 mm | | Module area | 2.795 m² | 2.795 m² | | Weight | 34.7 kg | 34.7 kg | | Weight per kWp | 53.4 kg/kWp | 53.4 kg/kWp | | Product warranty | 15 yrs | 15 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 | 156 | 156 | | 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, 650:** 21,809 kWh - **Cumulative output, 650W:** 21,809 kWh - **Gap:** No difference ## Output when hot | Condition | Cell temperature | 650 | 650W | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 650 W | 650 W | 100.0% of rated power | | Cool, bright day | 40 °C | 622 W | 622 W | 95.7% of rated power | | Typical summer roof | 55 °C | 593 W | 593 W | 91.3% of rated power | | Hot roof | 70 °C | 565 W | 565 W | 87.0% of rated power | ## Against the whole database | Measure | 650 | 650W | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #1,017 | #1,017 | 14,005 | Tied - the same position in the database | | Power density | #1,222 | #1,222 | 14,005 | Tied - the same position in the database | | Heat behaviour | #2,165 | #2,165 | 14,005 | Tied - the same position in the database | | Weight | #7,283 | #7,283 | 14,005 | Tied - the same position in the database | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #1,318 | #1,318 | 14,005 | Tied - the same position in the database | ## Questions ### Which panel is better: Astronergy CHSM78N(DG)/F-BH-650 or Astronergy CHSM78N(DG)/F-BH-650W? According to our database: both panels are closely matched on key specs - the decision often comes down to price and local availability. See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Astronergy CHSM78N(DG)/F-BH-650 and Astronergy CHSM78N(DG)/F-BH-650W? **Astronergy CHSM78N(DG)/F-BH-650** has a module efficiency of **23.30%**, while **Astronergy CHSM78N(DG)/F-BH-**650 W**** is **23.30%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Astronergy CHSM78N(DG)/F-BH-650 use vs Astronergy CHSM78N(DG)/F-BH-650W? **Astronergy CHSM78N(DG)/F-BH-650** uses **TOPCon** cells; **Astronergy CHSM78N(DG)/F-BH-**650 W**** 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 CHSM78N(DG)/F-BH-650 and Astronergy CHSM78N(DG)/F-BH-650W? **Astronergy CHSM78N(DG)/F-BH-650** has a **30 years** power warranty; **Astronergy CHSM78N(DG)/F-BH-**650 W**** 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 CHSM78N(DG)/F-BH-650 and Astronergy CHSM78N(DG)/F-BH-650W bifacial panels? Both **Astronergy CHSM78N(DG)/F-BH-650** and **Astronergy CHSM78N(DG)/F-BH-**650 W**** 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 CHSM78N(DG)/F-BH-650 vs Astronergy CHSM78N(DG)/F-BH 650W](https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-650/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-650w) - One difference: voltage at max power - [Astronergy CHSM78N(DG)/F-BH-650 vs Astronergy CHSM78N(DG)/F-BH-645](https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-650/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-645) - One difference: module efficiency - [Astronergy CHSM78N(DG)/F-BH-650 vs Astronergy CHSM78N(DG)/F-BH 645W](https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-650/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-645w) - One difference: module efficiency - [Astronergy CHSM78N(DG)/F-BH-650 vs Astronergy CHSM78N(DG)/F-BH-645W](https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-650/astronergy-chsm78n-dg-f-bh-645w) - One difference: module efficiency - [Astronergy CHSM78N(DG)/F-BH-650 vs Astronergy CHSM78N(DG)/F-BH-640](https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-650/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-640) - 3 differences, the largest is module efficiency - [Astronergy CHSM78N(DG)/F-BH-650 vs Astronergy CHSM78N(DG)/F-BH 640W](https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-650/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-640w) - 3 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-650/astronergy-chsm78n-dg-f-bh-650w 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.