--- title: "LEDVANCE M685~705N66UB-SF-F7-700 vs LEDVANCE M685~705N66UB-SF-F7-705 - Solar Panel Comparison | ComparePV" description: "Compare LEDVANCE M685~705N66UB-SF-F7-700 vs LEDVANCE M685~705N66UB-SF-F7-705 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/ledvance-m685-705n66ub-sf-f7-700/ledvance-m685-705n66ub-sf-f7-705" updated: 2026-09-11 --- # LEDVANCE M685~705N66UB-SF-F7-700 vs LEDVANCE M685~705N66UB-SF-F7-705 Identical on every published parameter All 19 comparable parameters agree. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [LEDVANCE M685~705N66UB-SF-F7-700](https://comparepv.com/panel/ledvance-m685-705n66ub-sf-f7-700) | [LEDVANCE M685~705N66UB-SF-F7-705](https://comparepv.com/panel/ledvance-m685-705n66ub-sf-f7-705) | | Manufacturer | LEDVANCE | LEDVANCE | | Power | 700 Wp | 705 Wp | | Efficiency | 22.53 % | 22.70 % | | Technology | TOPCon | TOPCon | ## Every compared parameter | Parameter | 700 | 705 | | --- | --- | --- | | Rated power | 700 Wp | 705 Wp | | Module efficiency | 22.53 % | 22.70 % | | Power density | 225.3 Wp/m² | 227.0 Wp/m² | | Open-circuit voltage | 48.00 V | 48.20 V | | Voltage at max power | 40.50 V | 40.70 V | | Short-circuit current | 18.32 A | 18.36 A | | Current at max power | 17.29 A | 17.33 A | | Temperature coefficient | -0.300 %/°C | -0.300 %/°C | | Dimensions | 2384x1303x35 mm | 2384x1303x35 mm | | Module area | 3.106 m² | 3.106 m² | | Weight | 34.5 kg | 34.5 kg | | Weight per kWp | 49.3 kg/kWp | 48.9 kg/kWp | | Product warranty | 25 yrs | 25 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.40 %/yr | 0.40 %/yr | | Cell technology | TOPCon | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 132 | 132 | | Bifacial | Yes | Yes | ## Thirty-year yield Declared annual degradation, with a 1.0% first-year loss assumed for both panels because at least one datasheet omits it, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.300 %/°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, 700:** 23,486 kWh - **Cumulative output, 705:** 23,654 kWh - **Gap:** 168 kWh ## Output when hot | Condition | Cell temperature | 700 | 705 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 700 W | 705 W | 100.0% of rated power | | Cool, bright day | 40 °C | 669 W | 673 W | 95.5% of rated power | | Typical summer roof | 55 °C | 637 W | 642 W | 91.0% of rated power | | Hot roof | 70 °C | 606 W | 610 W | 86.5% of rated power | ## Against the whole database | Measure | 700 | 705 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #3,982 | #3,307 | 14,005 | 705 leads by 675 places | | Power density | #3,989 | #3,361 | 14,005 | 705 leads by 628 places | | Heat behaviour | #6,093 | #6,093 | 14,005 | Tied - the same position in the database | | Weight | #2,850 | #2,611 | 14,005 | 705 leads by 239 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #213 | #166 | 14,005 | 705 leads by 47 places | ## Questions ### Which panel is better: LEDVANCE M685~705N66UB-SF-F7-700 or LEDVANCE M685~705N66UB-SF-F7-705? According to our database: **LEDVANCE M685~705N66UB-SF-F7-705** has higher module efficiency (**22.70%** vs **22.53%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of LEDVANCE M685~705N66UB-SF-F7-700 and LEDVANCE M685~705N66UB-SF-F7-705? **LEDVANCE M685~705N66UB-SF-F7-700** has a module efficiency of **22.53%**, while **LEDVANCE M685~705N66UB-SF-F7-705** is **22.70%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does LEDVANCE M685~705N66UB-SF-F7-700 use vs LEDVANCE M685~705N66UB-SF-F7-705? **LEDVANCE M685~705N66UB-SF-F7-700** uses **TOPCon** cells; **LEDVANCE M685~705N66UB-SF-F7-705** 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 LEDVANCE M685~705N66UB-SF-F7-700 and LEDVANCE M685~705N66UB-SF-F7-705? **LEDVANCE M685~705N66UB-SF-F7-700** has a **30 years** power warranty; **LEDVANCE M685~705N66UB-SF-F7-705** 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 LEDVANCE M685~705N66UB-SF-F7-700 and LEDVANCE M685~705N66UB-SF-F7-705 bifacial panels? Both **LEDVANCE M685~705N66UB-SF-F7-700** and **LEDVANCE M685~705N66UB-SF-F7-705** 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. ## Related comparisons - [LEDVANCE M685~705N66UB-SF-F7-700 vs LEDVANCE M705N66UB-SF-F7](https://comparepv.com/compare/ledvance-m685-705n66ub-sf-f7-700/ledvance-m705n66ub-sf-f7) - The same specification on paper - [LEDVANCE M685~705N66UB-SF-F7-700 vs LEDVANCE M700N66UB-SF-F7](https://comparepv.com/compare/ledvance-m685-705n66ub-sf-f7-700/ledvance-m700n66ub-sf-f7) - The same specification on paper - [LEDVANCE M685~705N66UB-SF-F7-700 vs LEDVANCE M685~705N66UB-SF-F7-695](https://comparepv.com/compare/ledvance-m685-705n66ub-sf-f7-700/ledvance-m685-705n66ub-sf-f7-695) - The same specification on paper - [LEDVANCE M685~705N66UB-SF-F7-700 vs LEDVANCE M695N66UB-SF-F7](https://comparepv.com/compare/ledvance-m685-705n66ub-sf-f7-700/ledvance-m695n66ub-sf-f7) - The same specification on paper - [LEDVANCE M685~705N66UB-SF-F7-700 vs LEDVANCE M685~705N66UB-SF-F7-690](https://comparepv.com/compare/ledvance-m685-705n66ub-sf-f7-700/ledvance-m685-705n66ub-sf-f7-690) - 3 differences, the largest is module efficiency - [LEDVANCE M685~705N66UB-SF-F7-700 vs LEDVANCE M690N66UB-SF-F7](https://comparepv.com/compare/ledvance-m685-705n66ub-sf-f7-700/ledvance-m690n66ub-sf-f7) - 3 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/ledvance-m685-705n66ub-sf-f7-700/ledvance-m685-705n66ub-sf-f7-705 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.