HN21N-66HT735W vs HN21RN-66QT665W 6 of 19 identical Swap Change panels

Hanersun HN21N-66HT735W vs Hanersun HN21RN-66QT665W

Q: Which panel is better: Hanersun HN21N-66HT735W or Hanersun HN21RN-66QT665W?

According to our database: Hanersun HN21RN-66QT665W has higher module efficiency (24.60% vs 23.70%); Hanersun HN21RN-66QT665W tolerates heat better (temp coeff -0.260%/°C vs -0.280%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of Hanersun HN21N-66HT735W and Hanersun HN21RN-66QT665W?

Hanersun HN21N-66HT735W has a module efficiency of 23.70%, while Hanersun HN21RN-66QT665W is 24.60%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does Hanersun HN21N-66HT735W use vs Hanersun HN21RN-66QT665W?

Hanersun HN21N-66HT735W uses TOPCon cells; Hanersun HN21RN-66QT665W 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 Hanersun HN21N-66HT735W and Hanersun HN21RN-66QT665W?

Hanersun HN21N-66HT735W has a 30 years power warranty; Hanersun HN21RN-66QT665W 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 Hanersun HN21N-66HT735W and Hanersun HN21RN-66QT665W bifacial panels?

Both Hanersun HN21N-66HT735W and Hanersun HN21RN-66QT665W 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.

Hanersun

HN21N-66HT735W

735 Wp 23.70 % TOPCon Bifacial

Open panel page Datasheet PDF

Hanersun

HN21RN-66QT665W

665 Wp 24.60 % TOPCon Bifacial

Open panel page Datasheet PDF

The verdict

HN21RN-66QT665W leads on the differences that matter

The largest is module efficiency: 0.90 pp more efficient. 6 of 19 comparable parameters are identical.

See all 13 differences

How alike are they

6 of 19 comparable
parameters are identical

identical differs

What actually differs

13 of 19 parameters

Parameter HN21N-66HT735W HN21RN-66QT665W Difference

Module efficiency 23.70 % 24.60 % 0.90 pp more efficient

Rated power 735 Wp 665 Wp 70 W more power

Power density 236.6 Wp/m² 246.2 Wp/m² 9.6 Wp/m² higher

Weight 37.4 kg 32.5 kg 4.9 kg lighter

Temperature coefficient -0.280 %/°C -0.260 %/°C 0.020 %/°C better in heat

Short-circuit current 18.62 A 16.57 A 2.05 A apart

Module area 3.106 m² 2.701 m² 0.405 m² apart

Annual degradation 0.40 %/yr 0.35 %/yr 0.05 %/yr slower

Cell count 132 264 132 cells apart

Current at max power 17.61 A 15.67 A 1.94 A apart

Weight per kWp 50.9 kg/kWp 48.9 kg/kWp 2.0 kg/kWp lighter

Open-circuit voltage 49.60 V 50.72 V 1.12 V apart

Dimensions 2384x1303x33 mm 2382x1134x30 mm 2384x1303x33 mm vs 2382x1134x30 mm

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

HN21N-66HT735W

24,661 kWh

HN21RN-66QT665W

22,486 kWh

Lifetime gap

2,175 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario HN21N-66HT735W HN21RN-66QT665W

Standard test conditions 25 °C 100.0% of rated power 735 W 665 W

Cool, bright day 40 °C 95.8% of rated power 704 W 639 W

Typical summer roof 55 °C 91.6% of rated power 673 W 613 W

Hot roof 70 °C 87.4% of rated power 642 W 587 W

Full specification

Parameter HN21N-66HT735W HN21RN-66QT665W Difference

Power and efficiency

Rated power 735 Wp 665 Wp +70 W for HN21N-66HT735W

Module efficiency 23.70 % 24.60 % +0.90 pp for HN21RN-66QT665W

Power density 236.6 Wp/m² 246.2 Wp/m² +9.6 Wp/m² for HN21RN-66QT665W

Open-circuit voltage 49.60 V 50.72 V 1.12 V apart

Voltage at max power 41.76 V 42.46 V Effectively the same

Short-circuit current 18.62 A 16.57 A 2.05 A apart

Current at max power 17.61 A 15.67 A 1.94 A apart

Temperature

Temperature coefficient -0.280 %/°C -0.260 %/°C +0.020 %/°C for HN21RN-66QT665W

Mechanical

Dimensions 2384x1303x33 mm 2382x1134x30 mm 2384x1303x33 mm vs 2382x1134x30 mm

Module area 3.106 m² 2.701 m² 0.405 m² apart

Weight 37.4 kg 32.5 kg -4.9 kg for HN21RN-66QT665W

Weight per kWp 50.9 kg/kWp 48.9 kg/kWp -2.0 kg/kWp for HN21RN-66QT665W

Warranty and degradation

Product warranty 15 yrs 15 yrs Same

Performance warranty 30 yrs 30 yrs Same

Annual degradation 0.40 %/yr 0.35 %/yr -0.05 %/yr for HN21RN-66QT665W

Technology

Cell technology TOPCon TOPCon Same

Cell type Monocrystalline Monocrystalline Same

Cell count 132 264 132 cells apart

Bifacial Yes Yes Same

Against the whole database

14,005 panels

Efficiency

#517 vs #51

HN21RN-66QT665W leads by 466 places

Power density

#582 vs #42

HN21RN-66QT665W leads by 540 places

Heat behaviour

#1,309 vs #511

HN21RN-66QT665W leads by 798 places

Weight

#4,262 vs #2,555

HN21RN-66QT665W leads by 1,707 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#155 vs #409

HN21N-66HT735W leads by 254 places

More useful comparisons

Open the full database

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Hanersun HN21N-66HT735W vs Hanersun HN21N-66HT740W

The same specification on paper

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13 differences, the largest is module efficiency

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Hanersun HN21N-66HT735W vs Hanersun HN21RN-66QT660W

12 differences, the largest is module efficiency

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Hanersun HN21N-66HT735W vs Hanersun HN21RN-66QT655W

11 differences, the largest is rated power

Written summary

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Questions about this pairing

Which panel is better: Hanersun HN21N-66HT735W or Hanersun HN21RN-66QT665W?

According to our database: Hanersun HN21RN-66QT665 W has higher module efficiency (24.60% vs 23.70%); Hanersun HN21RN-66QT665 W tolerates heat better (temp coeff -0.260%/°C vs -0.280%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of Hanersun HN21N-66HT735W and Hanersun HN21RN-66QT665W?

Hanersun HN21N-66HT735 W has a module efficiency of 23.70%, while Hanersun HN21RN-66QT665 W is 24.60%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does Hanersun HN21N-66HT735W use vs Hanersun HN21RN-66QT665W?

Hanersun HN21N-66HT735 W uses TOPCon cells; Hanersun HN21RN-66QT665 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 Hanersun HN21N-66HT735W and Hanersun HN21RN-66QT665W?

Hanersun HN21N-66HT735 W has a 30 years power warranty; Hanersun HN21RN-66QT665 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 Hanersun HN21N-66HT735W and Hanersun HN21RN-66QT665W bifacial panels?

Both Hanersun HN21N-66HT735 W and Hanersun HN21RN-66QT665 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.

Shop prices: See 19 Hanersun offers

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate. The thirty-year projection and the temperature scenarios are calculations from those figures, and each states its assumption above.