NSBK-33-720 vs HSBK-33-735 13 of 19 identical Swap Change panels

BYD NSBK-33-720 vs BYD HSBK-33-735

Q: Which panel is better: BYD NSBK-33-720 or BYD HSBK-33-735?

According to our database: BYD HSBK-33-735 has higher module efficiency (23.66% vs 23.19%); BYD HSBK-33-735 tolerates heat better (temp coeff -0.240%/°C vs -0.278%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of BYD NSBK-33-720 and BYD HSBK-33-735?

BYD NSBK-33-720 has a module efficiency of 23.19%, while BYD HSBK-33-735 is 23.66%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does BYD NSBK-33-720 use vs BYD HSBK-33-735?

BYD NSBK-33-720 uses TOPCon cells; BYD HSBK-33-735 uses HJT. 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 BYD NSBK-33-720 and BYD HSBK-33-735?

BYD NSBK-33-720 has a 30 years power warranty; BYD HSBK-33-735 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 BYD NSBK-33-720 and BYD HSBK-33-735 bifacial panels?

Both BYD NSBK-33-720 and BYD HSBK-33-735 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.

BYD

NSBK-33-720

720 Wp 23.19 % TOPCon Bifacial

Open panel page Datasheet PDF

BYD

HSBK-33-735

735 Wp 23.66 % HJT Bifacial

Open panel page Datasheet PDF

The verdict

HSBK-33-735 leads on the differences that matter

The largest is temperature coefficient: 0.038 %/°C better in heat. 13 of 19 comparable parameters are identical.

See all 6 differences

How alike are they

13 of 19 comparable
parameters are identical

identical differs

What actually differs

6 of 19 parameters

Parameter NSBK-33-720 HSBK-33-735 Difference

Temperature coefficient -0.278 %/°C -0.240 %/°C 0.038 %/°C better in heat

Module efficiency 23.19 % 23.66 % 0.47 pp more efficient

Power density 231.8 Wp/m² 236.6 Wp/m² 4.8 Wp/m² higher

Rated power 720 Wp 735 Wp 15 W more power

Cell technology TOPCon HJT TOPCon vs HJT

Open-circuit voltage 49.44 V 50.47 V 1.03 V apart

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

NSBK-33-720

24,157 kWh

HSBK-33-735

24,661 kWh

Lifetime gap

504 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario NSBK-33-720 HSBK-33-735

Standard test conditions 25 °C 100.0% of rated power 720 W 735 W

Cool, bright day 40 °C 95.8% of rated power 690 W 709 W

Typical summer roof 55 °C 91.7% of rated power 660 W 682 W

Hot roof 70 °C 87.5% of rated power 630 W 656 W

Full specification

Parameter NSBK-33-720 HSBK-33-735 Difference

Power and efficiency

Rated power 720 Wp 735 Wp +15 W for HSBK-33-735

Module efficiency 23.19 % 23.66 % +0.47 pp for HSBK-33-735

Power density 231.8 Wp/m² 236.6 Wp/m² +4.8 Wp/m² for HSBK-33-735

Open-circuit voltage 49.44 V 50.47 V 1.03 V apart

Voltage at max power 41.60 V 42.41 V Effectively the same

Short-circuit current 18.26 A 18.44 A Effectively the same

Current at max power 17.31 A 17.34 A Effectively the same

Temperature

Temperature coefficient -0.278 %/°C -0.240 %/°C +0.038 %/°C for HSBK-33-735

Mechanical

Dimensions 2384x1303x33 mm 2384x1303x33 mm Same

Module area 3.106 m² 3.106 m² Same

Weight 38.3 kg 38.3 kg Same

Weight per kWp 53.2 kg/kWp 52.1 kg/kWp Effectively the same

Warranty and degradation

Product warranty 12 yrs 12 yrs Same

Performance warranty 30 yrs 30 yrs Same

Annual degradation 0.40 %/yr 0.40 %/yr Same

Technology

Cell technology TOPCon HJT TOPCon vs HJT

Cell type Monocrystalline Monocrystalline Same

Cell count 132 132 Same

Bifacial Yes Yes Same

Against the whole database

14,005 panels

Efficiency

#1,423 vs #602

HSBK-33-735 leads by 821 places

Power density

#1,347 vs #582

HSBK-33-735 leads by 765 places

Heat behaviour

#1,295 vs #13

HSBK-33-735 leads by 1,282 places

Weight

#7,025 vs #5,576

HSBK-33-735 leads by 1,449 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#540 vs #244

HSBK-33-735 leads by 296 places

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Written summary

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Questions about this pairing

Which panel is better: BYD NSBK-33-720 or BYD HSBK-33-735?

According to our database: BYD HSBK-33-735 has higher module efficiency (23.66% vs 23.19%); BYD HSBK-33-735 tolerates heat better (temp coeff -0.240%/°C vs -0.278%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of BYD NSBK-33-720 and BYD HSBK-33-735?

BYD NSBK-33-720 has a module efficiency of 23.19%, while BYD HSBK-33-735 is 23.66%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does BYD NSBK-33-720 use vs BYD HSBK-33-735?

BYD NSBK-33-720 uses TOPCon cells; BYD HSBK-33-735 uses HJT. 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 BYD NSBK-33-720 and BYD HSBK-33-735?

BYD NSBK-33-720 has a 30 years power warranty; BYD HSBK-33-735 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 BYD NSBK-33-720 and BYD HSBK-33-735 bifacial panels?

Both BYD NSBK-33-720 and BYD HSBK-33-735 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.

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.