705 vs 735 13 of 19 identical Swap Change panels

BYD HSBK-33-705 vs BYD HSBK-33-735

Q: Which panel is better: BYD HSBK-33-705 or BYD HSBK-33-735?

According to our database: BYD HSBK-33-735 has higher module efficiency (23.66% vs 22.70%). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of BYD HSBK-33-705 and BYD HSBK-33-735?

BYD HSBK-33-705 has a module efficiency of 22.70%, 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 HSBK-33-705 use vs BYD HSBK-33-735?

BYD HSBK-33-705 uses HJT 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 HSBK-33-705 and BYD HSBK-33-735?

BYD HSBK-33-705 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 HSBK-33-705 and BYD HSBK-33-735 bifacial panels?

Both BYD HSBK-33-705 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

HSBK-33-705

705 Wp 22.70 % HJT Bifacial

Open panel page Datasheet PDF

BYD

HSBK-33-735

735 Wp 23.66 % HJT Bifacial

Open panel page Datasheet PDF

The verdict

735 leads on the differences that matter

The largest is module efficiency: 0.96 pp more efficient. 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 705 735 Difference

Module efficiency 22.70 % 23.66 % 0.96 pp more efficient

Power density 227.0 Wp/m² 236.6 Wp/m² 9.7 Wp/m² higher

Rated power 705 Wp 735 Wp 30 W more power

Weight per kWp 54.3 kg/kWp 52.1 kg/kWp 2.2 kg/kWp lighter

Short-circuit current 17.90 A 18.44 A 0.54 A apart

Current at max power 16.84 A 17.34 A 0.50 A 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

Same temp coeff. for both panels (-0.240 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.

705

23,654 kWh

735

24,661 kWh

Lifetime gap

1,007 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario 705 735

Standard test conditions 25 °C 100.0% of rated power 705 W 735 W

Cool, bright day 40 °C 96.4% of rated power 680 W 709 W

Typical summer roof 55 °C 92.8% of rated power 654 W 682 W

Hot roof 70 °C 89.2% of rated power 629 W 656 W

Full specification

Parameter 705 735 Difference

Power and efficiency

Rated power 705 Wp 735 Wp +30 W for 735

Module efficiency 22.70 % 23.66 % +0.96 pp for 735

Power density 227.0 Wp/m² 236.6 Wp/m² +9.7 Wp/m² for 735

Open-circuit voltage 49.87 V 50.47 V Effectively the same

Voltage at max power 41.87 V 42.41 V Effectively the same

Short-circuit current 17.90 A 18.44 A 0.54 A apart

Current at max power 16.84 A 17.34 A 0.50 A apart

Temperature

Temperature coefficient -0.240 %/°C -0.240 %/°C Same

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 54.3 kg/kWp 52.1 kg/kWp -2.2 kg/kWp for 735

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 HJT HJT Same

Cell type Monocrystalline Monocrystalline Same

Cell count 132 132 Same

Bifacial Yes Yes Same

Against the whole database

14,005 panels

Efficiency

#3,307 vs #602

735 leads by 2,705 places

Power density

#3,361 vs #582

735 leads by 2,779 places

Heat behaviour

#13 vs #13

Tied - the same position in the database

Weight

#8,604 vs #5,576

735 leads by 3,028 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#1,007 vs #244

735 leads by 763 places

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Written summary

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Questions about this pairing

Which panel is better: BYD HSBK-33-705 or BYD HSBK-33-735?

According to our database: BYD HSBK-33-735 has higher module efficiency (23.66% vs 22.70%). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of BYD HSBK-33-705 and BYD HSBK-33-735?

BYD HSBK-33-705 has a module efficiency of 22.70%, 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 HSBK-33-705 use vs BYD HSBK-33-735?

BYD HSBK-33-705 uses HJT 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 HSBK-33-705 and BYD HSBK-33-735?

BYD HSBK-33-705 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 HSBK-33-705 and BYD HSBK-33-735 bifacial panels?

Both BYD HSBK-33-705 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.