650 vs 650W 19 of 19 identical Swap Change panels

Astronergy CHSM78N(DG)/F-BH-650 vs Astronergy CHSM78N(DG)/F-BH-650W

Q: 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-650W is 23.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: 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-650W uses TOPCon. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.

Q: 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-650W 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.

Q: 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-650W 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.

CHSM78N(DG)/F-BH-650

650 Wp 23.30 % TOPCon Bifacial

Open panel page Datasheet PDF

CHSM78N(DG)/F-BH-650W

650 Wp 23.30 % TOPCon Bifacial

Open panel page Datasheet PDF

The verdict

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.

How alike are they

19 of 19 comparable
parameters are identical

identical differs

What actually differs

0 of 19 parameters

Every comparable parameter agrees. The full specification is below.

What it means on a roof

Thirty years of production

Each panel's own declared degradation curve, at 1,200 kWh/kWp a year

Cell temperature

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.

650

21,809 kWh

650W

21,809 kWh

Lifetime gap

No difference

Output when it is hot

Rated power carried across the range a module actually sees

Scenario 650 650W

Standard test conditions 25 °C 100.0% of rated power 650 W 650 W

Cool, bright day 40 °C 95.7% of rated power 622 W 622 W

Typical summer roof 55 °C 91.3% of rated power 593 W 593 W

Hot roof 70 °C 87.0% of rated power 565 W 565 W

Full specification

Parameter 650 650W Difference

Power and efficiency

Rated power 650 Wp 650 Wp Same

Module efficiency 23.30 % 23.30 % Same

Power density 232.5 Wp/m² 232.5 Wp/m² Same

Open-circuit voltage 57.01 V 57.01 V Same

Voltage at max power 47.12 V 47.12 V Same

Short-circuit current 14.51 A 14.51 A Same

Current at max power 13.80 A 13.80 A Same

Temperature

Temperature coefficient -0.290 %/°C -0.290 %/°C Same

Mechanical

Dimensions 2465x1134x30 mm 2465x1134x30 mm Same

Module area 2.795 m² 2.795 m² Same

Weight 34.7 kg 34.7 kg Same

Weight per kWp 53.4 kg/kWp 53.4 kg/kWp Same

Warranty and degradation

Product warranty 15 yrs 15 yrs Same

Performance warranty 30 yrs 30 yrs Same

Annual degradation 0.40 %/yr 0.40 %/yr Same

Technology

Cell technology TOPCon TOPCon Same

Cell type Monocrystalline Monocrystalline Same

Cell count 156 156 Same

Bifacial Yes Yes Same