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LA470 vs LA450 15 of 19 identical Swap Change panels

TCL Zhonghuan HSM-BD54-LA470 vs TCL Zhonghuan HSM-BD54-LA450

TCL Zhonghuan
HSM-BD54-LA470
470 Wp 23.60 % Back Contact
Open panel page Datasheet PDF
VS
TCL Zhonghuan
HSM-BD54-LA450
450 Wp 22.60 % Back Contact
Open panel page Datasheet PDF
The verdict

LA470 leads on the differences that matter

The largest is module efficiency: 1.00 pp more efficient. 15 of 19 comparable parameters are identical.

See all 4 differences
How alike are they
15 of 19 comparable
parameters are identical
identical differs
01

What actually differs

4 of 19 parameters
Parameter LA470 LA450 Difference
Module efficiency 23.60 % 22.60 % 1.00 pp more efficient
Power density 235.9 Wp/m² 225.9 Wp/m² 10.0 Wp/m² higher
Rated power 470 Wp 450 Wp 20 W more power
Weight per kWp 45.7 kg/kWp 47.8 kg/kWp 2.0 kg/kWp lighter
02

What it means on a roof

Thirty years of production
Each panel's own declared degradation curve, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.260 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
LA470
15,892 kWh
LA450
15,216 kWh
Lifetime gap
676 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario LA470 LA450
Standard test conditions 25 °C 100.0% of rated power 470 W 450 W
Cool, bright day 40 °C 96.1% of rated power 452 W 432 W
Typical summer roof 55 °C 92.2% of rated power 433 W 415 W
Hot roof 70 °C 88.3% of rated power 415 W 397 W
03

Full specification

Parameter LA470 LA450 Difference
Power and efficiency
Rated power 470 Wp 450 Wp +20 W for LA470
Module efficiency 23.60 % 22.60 % +1.00 pp for LA470
Power density 235.9 Wp/m² 225.9 Wp/m² +10.0 Wp/m² for LA470
Open-circuit voltage 41.18 V 40.94 V Effectively the same
Voltage at max power 34.74 V 34.50 V Effectively the same
Short-circuit current 14.32 A 14.12 A Effectively the same
Current at max power 13.54 A 13.05 A Effectively the same
Temperature
Temperature coefficient -0.260 %/°C -0.260 %/°C Same
Mechanical
Dimensions 1757x1134x30 mm 1757x1134x30 mm Same
Module area 1.992 m² 1.992 m² Same
Weight 21.5 kg 21.5 kg Same
Weight per kWp 45.7 kg/kWp 47.8 kg/kWp -2.0 kg/kWp for LA470
Warranty and degradation
Product warranty 25 yrs 25 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.35 %/yr 0.35 %/yr Same
Technology
Cell technology Back Contact Back Contact Same
Cell type Monocrystalline Monocrystalline Same
Cell count 108 108 Same
Bifacial No No Same
04

Against the whole database

14,005 panels
Efficiency
#627 vs #3,658
LA470 leads by 3,031 places
Power density
#657 vs #3,723
LA470 leads by 3,066 places
Heat behaviour
#511 vs #511
Tied - the same position in the database
Weight
#860 vs #1,891
LA470 leads by 1,031 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#4,119 vs #5,945
LA470 leads by 1,826 places
05

More useful comparisons

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TCL Zhonghuan HSM-BD54-LA470 vs TCL Zhonghuan HSM-BD54-WA475
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06

Written summary

07

Questions about this pairing

Which panel is better: TCL Zhonghuan HSM-BD54-LA470 or TCL Zhonghuan HSM-BD54-LA450?
According to our database: TCL Zhonghuan HSM-BD54-LA470 has higher module efficiency (23.60% vs 22.60%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of TCL Zhonghuan HSM-BD54-LA470 and TCL Zhonghuan HSM-BD54-LA450?
TCL Zhonghuan HSM-BD54-LA470 has a module efficiency of 23.60%, while TCL Zhonghuan HSM-BD54-LA450 is 22.60%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does TCL Zhonghuan HSM-BD54-LA470 use vs TCL Zhonghuan HSM-BD54-LA450?
TCL Zhonghuan HSM-BD54-LA470 uses Back Contact cells; TCL Zhonghuan HSM-BD54-LA450 uses Back Contact. 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 TCL Zhonghuan HSM-BD54-LA470 and TCL Zhonghuan HSM-BD54-LA450?
TCL Zhonghuan HSM-BD54-LA470 has a 30 years power warranty; TCL Zhonghuan HSM-BD54-LA450 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.

Shop prices: See 25 TCL Zhonghuan 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.