--- title: "Jinko Solar JKM650N-78HL4-BDV-F9-EU vs Jinko Solar JKM645N-78HL4-BDV - Solar Panel Comparison | ComparePV" description: "Compare Jinko Solar JKM650N-78HL4-BDV-F9-EU vs Jinko Solar JKM645N-78HL4-BDV side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/jinko-solar-co-ltd-jkm650n-78hl4-bdv-f9-eu/jinko-solar-jkm645n-78hl4-bdv" updated: 2026-09-11 --- # Jinko Solar JKM650N-78HL4-BDV-F9-EU vs Jinko Solar JKM645N-78HL4-BDV 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 | [Jinko Solar JKM650N-78HL4-BDV-F9-EU](https://comparepv.com/panel/jinko-solar-co-ltd-jkm650n-78hl4-bdv-f9-eu) | [Jinko Solar JKM645N-78HL4-BDV](https://comparepv.com/panel/jinko-solar-jkm645n-78hl4-bdv) | | Manufacturer | Jinko Solar | Jinko Solar | | Power | 650 Wp | 645 Wp | | Efficiency | 23.25 % | 23.07 % | | Technology | TOPCon | TOPCon | ## Every compared parameter | Parameter | JKM650N-78HL4-BDV-F9-EU | JKM645N-78HL4-BDV | | --- | --- | --- | | Rated power | 650 Wp | 645 Wp | | Module efficiency | 23.25 % | 23.07 % | | Power density | 232.5 Wp/m² | 230.7 Wp/m² | | Open-circuit voltage | 57.60 V | 57.47 V | | Voltage at max power | 48.33 V | 48.17 V | | Short-circuit current | 14.10 A | 14.04 A | | Current at max power | 13.45 A | 13.39 A | | Temperature coefficient | -0.290 %/°C | -0.290 %/°C | | Dimensions | 2465x1134x30 mm | 2465x1134x30 mm | | Module area | 2.795 m² | 2.795 m² | | Weight | 34.0 kg | 34.0 kg | | Weight per kWp | 52.3 kg/kWp | 52.7 kg/kWp | | Product warranty | 12 yrs | 12 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 | 156 | 156 | | Bifacial | Yes | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.290 %/°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, JKM650N-78HL4-BDV-F9-EU:** 21,809 kWh - **Cumulative output, JKM645N-78HL4-BDV:** 21,641 kWh - **Gap:** 168 kWh ## Output when hot | Condition | Cell temperature | JKM650N-78HL4-BDV-F9-EU | JKM645N-78HL4-BDV | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 650 W | 645 W | 100.0% of rated power | | Cool, bright day | 40 °C | 622 W | 617 W | 95.7% of rated power | | Typical summer roof | 55 °C | 593 W | 589 W | 91.3% of rated power | | Hot roof | 70 °C | 565 W | 561 W | 87.0% of rated power | ## Against the whole database | Measure | JKM650N-78HL4-BDV-F9-EU | JKM645N-78HL4-BDV | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #1,239 | #1,683 | 14,005 | JKM650N-78HL4-BDV-F9-EU leads by 444 places | | Power density | #1,222 | #1,654 | 14,005 | JKM650N-78HL4-BDV-F9-EU leads by 432 places | | Heat behaviour | #2,165 | #2,165 | 14,005 | Tied - the same position in the database | | Weight | #5,769 | #6,362 | 14,005 | JKM650N-78HL4-BDV-F9-EU leads by 593 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #1,648 | #1,852 | 14,005 | JKM650N-78HL4-BDV-F9-EU leads by 204 places | ## Questions ### Which panel is better: Jinko Solar JKM650N-78HL4-BDV-F9-EU or Jinko Solar JKM645N-78HL4-BDV? According to our database: **Jinko Solar JKM650N-78HL4-BDV-F9-EU** has higher module efficiency (**23.25%** vs **23.07%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Jinko Solar JKM650N-78HL4-BDV-F9-EU and Jinko Solar JKM645N-78HL4-BDV? **Jinko Solar JKM650N-78HL4-BDV-F9-EU** has a module efficiency of **23.25%**, while **Jinko Solar JKM645N-78HL4-BDV** is **23.07%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Jinko Solar JKM650N-78HL4-BDV-F9-EU use vs Jinko Solar JKM645N-78HL4-BDV? **Jinko Solar JKM650N-78HL4-BDV-F9-EU** uses **TOPCon** cells; **Jinko Solar JKM645N-78HL4-BDV** 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 Jinko Solar JKM650N-78HL4-BDV-F9-EU and Jinko Solar JKM645N-78HL4-BDV? **Jinko Solar JKM650N-78HL4-BDV-F9-EU** has a **30 years** power warranty; **Jinko Solar JKM645N-78HL4-BDV** 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 Jinko Solar JKM650N-78HL4-BDV-F9-EU and Jinko Solar JKM645N-78HL4-BDV bifacial panels? Both **Jinko Solar JKM650N-78HL4-BDV-F9-EU** and **Jinko Solar JKM645N-78HL4-BDV** 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 - [Jinko Solar JKM650N-78HL4-BDV-F9-EU vs Jinko Solar JKM645N-78HL4-BDV-F9-EU](https://comparepv.com/compare/jinko-solar-co-ltd-jkm650n-78hl4-bdv-f9-eu/jinko-solar-co-ltd-jkm645n-78hl4-bdv-f9-eu) - The same specification on paper - [Jinko Solar JKM650N-78HL4-BDV-F9-EU vs Jinko Solar JKM640N-78HL4-BDV-F9-EU](https://comparepv.com/compare/jinko-solar-co-ltd-jkm650n-78hl4-bdv-f9-eu/jinko-solar-co-ltd-jkm640n-78hl4-bdv-f9-eu) - 3 differences, the largest is module efficiency - [Jinko Solar JKM650N-78HL4-BDV-F9-EU vs Jinko Solar JKM635N-78HL4-BDV-F9-EU](https://comparepv.com/compare/jinko-solar-co-ltd-jkm650n-78hl4-bdv-f9-eu/jinko-solar-co-ltd-jkm635n-78hl4-bdv-f9-eu) - 3 differences, the largest is module efficiency - [Jinko Solar JKM650N-78HL4-BDV-F9-EU vs Jinko Solar JKM630N-78HL4-BDV-F9-EU](https://comparepv.com/compare/jinko-solar-co-ltd-jkm650n-78hl4-bdv-f9-eu/jinko-solar-co-ltd-jkm630n-78hl4-bdv-f9-eu) - 3 differences, the largest is module efficiency - [Jinko Solar JKM650N-78HL4-BDV-F9-EU vs Jinko Solar JKM625N-78HL4-BDV-F9-EU](https://comparepv.com/compare/jinko-solar-co-ltd-jkm650n-78hl4-bdv-f9-eu/jinko-solar-co-ltd-jkm625n-78hl4-bdv-f9-eu) - 4 differences, the largest is module efficiency - [Jinko Solar JKM645N-78HL4-BDV vs Jinko Solar JKM625-650N-78HL4-BDV (650W)](https://comparepv.com/compare/jinko-solar-jkm645n-78hl4-bdv/jinko-solar-co-ltd-jkm625-650n-78hl4-bdv-650w) - The same specification on paper --- Source: https://comparepv.com/compare/jinko-solar-co-ltd-jkm650n-78hl4-bdv-f9-eu/jinko-solar-jkm645n-78hl4-bdv 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.