--- title: "AIKO AIKO-A805-GRH78Dw vs AIKO AIKO-A470-MAH54Db - Solar Panel Comparison | ComparePV" description: "Compare AIKO AIKO-A805-GRH78Dw vs AIKO AIKO-A470-MAH54Db side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/aiko-aiko-a805-grh78dw/aiko-solar-aiko-a470-mah54db" updated: 2026-09-11 --- # AIKO AIKO-A805-GRH78Dw vs AIKO AIKO-A470-MAH54Db A805-GRH78Dw leads on the differences that matter The largest is module efficiency: 1.50 pp more efficient. 4 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | [AIKO AIKO-A470-MAH54Db](https://comparepv.com/panel/aiko-solar-aiko-a470-mah54db) | | Manufacturer | AIKO | AIKO | | Power | 805 Wp | 470 Wp | | Efficiency | 25.10 % | 23.60 % | | Technology | Back Contact | Back Contact | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | A805-GRH78Dw | A470-MAH54Db | Difference | | --- | --- | --- | --- | | Module efficiency | 25.10 % | 23.60 % | +1.50 pp for A805-GRH78Dw | | Rated power | 805 Wp | 470 Wp | +335 W for A805-GRH78Dw | | Power density | 250.6 Wp/m² | 235.9 Wp/m² | +14.7 Wp/m² for A805-GRH78Dw | | Weight | 39.8 kg | 24.5 kg | -15.3 kg for A470-MAH54Db | | Product warranty | 15 yrs | 25 yrs | +10 yrs for A470-MAH54Db | | Open-circuit voltage | 59.42 V | 41.18 V | 18.24 V apart | | Short-circuit current | 17.13 A | 14.32 A | 2.81 A apart | | Module area | 3.212 m² | 1.992 m² | 1.219 m² apart | | Weight per kWp | 49.4 kg/kWp | 52.1 kg/kWp | -2.7 kg/kWp for A805-GRH78Dw | | Voltage at max power | 49.46 V | 34.74 V | 14.72 V apart | | Current at max power | 16.28 A | 13.54 A | 2.74 A apart | | Cell count | 156 | 108 | 48 cells apart | | Bifacial | Yes | No | Yes vs No | | Dimensions | 2465x1303x33 mm | 1757x1134x30 mm | 2465x1303x33 mm vs 1757x1134x30 mm | ## Every compared parameter | Parameter | A805-GRH78Dw | A470-MAH54Db | | --- | --- | --- | | Rated power | 805 Wp | 470 Wp | | Module efficiency | 25.10 % | 23.60 % | | Power density | 250.6 Wp/m² | 235.9 Wp/m² | | Open-circuit voltage | 59.42 V | 41.18 V | | Voltage at max power | 49.46 V | 34.74 V | | Short-circuit current | 17.13 A | 14.32 A | | Current at max power | 16.28 A | 13.54 A | | Temperature coefficient | -0.260 %/°C | -0.260 %/°C | | Dimensions | 2465x1303x33 mm | 1757x1134x30 mm | | Module area | 3.212 m² | 1.992 m² | | Weight | 39.8 kg | 24.5 kg | | Weight per kWp | 49.4 kg/kWp | 52.1 kg/kWp | | Product warranty | 15 yrs | 25 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | - | 0.35 %/yr | | Cell technology | Back Contact | Back Contact | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 156 | 108 | | Bifacial | Yes | No | ## Thirty-year yield A 1.0% first-year loss then 0.40% a year, assumed for both panels, 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. - **Cumulative output, A805-GRH78Dw:** 27,009 kWh - **Cumulative output, A470-MAH54Db:** 15,769 kWh - **Gap:** 11,240 kWh ## Output when hot | Condition | Cell temperature | A805-GRH78Dw | A470-MAH54Db | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 805 W | 470 W | 100.0% of rated power | | Cool, bright day | 40 °C | 774 W | 452 W | 96.1% of rated power | | Typical summer roof | 55 °C | 742 W | 433 W | 92.2% of rated power | | Hot roof | 70 °C | 711 W | 415 W | 88.3% of rated power | ## Against the whole database | Measure | A805-GRH78Dw | A470-MAH54Db | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #3 | #627 | 14,005 | A805-GRH78Dw leads by 624 places | | Power density | #3 | #657 | 14,005 | A805-GRH78Dw leads by 654 places | | Heat behaviour | #511 | #511 | 14,005 | Tied - the same position in the database | | Weight | #2,977 | #5,602 | 14,005 | A805-GRH78Dw leads by 2,625 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #1 | #4,269 | 14,005 | A805-GRH78Dw leads by 4,268 places | ## Questions ### Which panel is better: AIKO AIKO-A805-GRH78Dw or AIKO AIKO-A470-MAH54Db? According to our database: **AIKO AIKO-A805-GRH78Dw** has higher module efficiency (**25.10%** vs **23.60%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of AIKO AIKO-A805-GRH78Dw and AIKO AIKO-A470-MAH54Db? **AIKO AIKO-A805-GRH78Dw** has a module efficiency of **25.10%**, while **AIKO AIKO-A470-MAH54Db** is **23.60%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does AIKO AIKO-A805-GRH78Dw use vs AIKO AIKO-A470-MAH54Db? **AIKO AIKO-A805-GRH78Dw** uses **Back Contact** cells; **AIKO AIKO-A470-MAH54Db** 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 AIKO AIKO-A805-GRH78Dw and AIKO AIKO-A470-MAH54Db? **AIKO AIKO-A805-GRH78Dw** has a **30 years** power warranty; **AIKO AIKO-A470-MAH54Db** 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 AIKO AIKO-A805-GRH78Dw and AIKO AIKO-A470-MAH54Db bifacial panels? **AIKO AIKO-A805-GRH78Dw** is bifacial (captures light from both faces); **AIKO AIKO-A470-MAH54Db** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath. ## Related comparisons - [AIKO AIKO-A805-GRH78Dw vs AIKO AIKO-A800-GRH78Dw](https://comparepv.com/compare/aiko-aiko-a805-grh78dw/aiko-aiko-a800-grh78dw) - One difference: module efficiency - [AIKO AIKO-A805-GRH78Dw vs AIKO AIKO-A795-GRH78Dw](https://comparepv.com/compare/aiko-aiko-a805-grh78dw/aiko-aiko-a795-grh78dw) - 3 differences, the largest is module efficiency - [AIKO AIKO-A805-GRH78Dw vs AIKO AIKO-A790-GRH78Dw](https://comparepv.com/compare/aiko-aiko-a805-grh78dw/aiko-aiko-a790-grh78dw) - 3 differences, the largest is module efficiency - [AIKO AIKO-A805-GRH78Dw vs AIKO AIKO-A785-GRH78Dw](https://comparepv.com/compare/aiko-aiko-a805-grh78dw/aiko-aiko-a785-grh78dw) - 3 differences, the largest is module efficiency - [AIKO AIKO-A805-GRH78Dw vs AIKO AIKO-A780-GRH78Dw](https://comparepv.com/compare/aiko-aiko-a805-grh78dw/aiko-aiko-a780-grh78dw) - 3 differences, the largest is module efficiency - [AIKO AIKO-A805-GRH78Dw vs AIKO AIKO-A775-GRH78Dw](https://comparepv.com/compare/aiko-aiko-a805-grh78dw/aiko-aiko-a775-grh78dw) - 3 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/aiko-aiko-a805-grh78dw/aiko-solar-aiko-a470-mah54db Not in this file, on the page: the thirty-year yield curve year by year at a cell temperature you pick and a written summary generated on request.