--- title: "Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (625W variant) - Solar Panel Comparison | ComparePV" description: "Compare Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (625W variant) side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/jinkosolar-jkm615-635n-78hl4-v-f6-en-620w-variant/jinkosolar-jkm615-635n-78hl4-v-f6-en-625w-variant" updated: 2026-09-11 --- # Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (625W variant) 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 JKM615-635N-78HL4-(V)-F6-EN (620W variant)](https://comparepv.com/panel/jinkosolar-jkm615-635n-78hl4-v-f6-en-620w-variant) | [Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (625W variant)](https://comparepv.com/panel/jinkosolar-jkm615-635n-78hl4-v-f6-en-625w-variant) | | Manufacturer | Jinko Solar | Jinko Solar | | Power | 620 Wp | 625 Wp | | Efficiency | 22.18 % | 22.36 % | | Technology | N-type | N-type | ## Every compared parameter | Parameter | (620W variant) | (625W variant) | | --- | --- | --- | | Rated power | 620 Wp | 625 Wp | | Module efficiency | 22.18 % | 22.36 % | | Power density | 221.8 Wp/m² | 223.6 Wp/m² | | Open-circuit voltage | 56.40 V | 56.55 V | | Voltage at max power | 46.97 V | 47.14 V | | Short-circuit current | 13.86 A | 13.92 A | | Current at max power | 13.20 A | 13.26 A | | Temperature coefficient | -0.290 %/°C | -0.290 %/°C | | Dimensions | 2465x1134x35 mm | 2465x1134x35 mm | | Module area | 2.795 m² | 2.795 m² | | Weight | 29.5 kg | 29.5 kg | | Weight per kWp | 47.6 kg/kWp | 47.2 kg/kWp | | Product warranty | 12 yrs | 12 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.40 %/yr | 0.40 %/yr | | Cell technology | N-type | N-type | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 156 | 156 | | Bifacial | No | No | ## 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, (620W variant):** 20,802 kWh - **Cumulative output, (625W variant):** 20,970 kWh - **Gap:** 168 kWh ## Output when hot | Condition | Cell temperature | (620W variant) | (625W variant) | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 620 W | 625 W | 100.0% of rated power | | Cool, bright day | 40 °C | 593 W | 598 W | 95.7% of rated power | | Typical summer roof | 55 °C | 566 W | 571 W | 91.3% of rated power | | Hot roof | 70 °C | 539 W | 543 W | 87.0% of rated power | ## Against the whole database | Measure | (620W variant) | (625W variant) | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #5,930 | #5,007 | 14,005 | (625W variant) leads by 923 places | | Power density | #5,869 | #4,955 | 14,005 | (625W variant) leads by 914 places | | Heat behaviour | #2,165 | #2,165 | 14,005 | Tied - the same position in the database | | Weight | #1,761 | #1,578 | 14,005 | (625W variant) leads by 183 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #3,366 | #2,981 | 14,005 | (625W variant) leads by 385 places | ## Questions ### Which panel is better: Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) or Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (625W variant)? According to our database: **Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (**625 W** variant)** has higher module efficiency (**22.36%** vs **22.18%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) and Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (625W variant)? **Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (**620 W** variant)** has a module efficiency of **22.18%**, while **Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (**625 W** variant)** is **22.36%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) use vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (625W variant)? **Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (**620 W** variant)** uses **N-type** cells; **Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (**625 W** variant)** uses **N-type**. 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 JKM615-635N-78HL4-(V)-F6-EN (620W variant) and Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (625W variant)? **Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (**620 W** variant)** has a **30 years** power warranty; **Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (**625 W** variant)** 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. ## Related comparisons - [Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant)](https://comparepv.com/compare/jinkosolar-jkm615-635n-78hl4-v-f6-en-620w-variant/jinkosolar-jkm615-635n-78hl4-v-f6-en-635w-variant) - 3 differences, the largest is module efficiency - [Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (630W variant)](https://comparepv.com/compare/jinkosolar-jkm615-635n-78hl4-v-f6-en-620w-variant/jinkosolar-jkm615-635n-78hl4-v-f6-en-630w-variant) - 3 differences, the largest is module efficiency - [Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (615W variant)](https://comparepv.com/compare/jinkosolar-jkm615-635n-78hl4-v-f6-en-620w-variant/jinkosolar-jkm615-635n-78hl4-v-f6-en-615w-variant) - The same specification on paper - [Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735W bin)](https://comparepv.com/compare/jinkosolar-jkm615-635n-78hl4-v-f6-en-620w-variant/jinkosolar-jkm710-735n-66hl5-bdv-z3-eu-735w-bin) - 14 differences, the largest is module efficiency - [Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM735N-66HL5-BDV-Z3-EU](https://comparepv.com/compare/jinkosolar-jkm615-635n-78hl4-v-f6-en-620w-variant/jinko-solar-jkm735n-66hl5-bdv-z3-eu) - 14 differences, the largest is module efficiency - [Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM735N-66HL5-BDV-Z6-EU](https://comparepv.com/compare/jinkosolar-jkm615-635n-78hl4-v-f6-en-620w-variant/jinko-solar-jkm735n-66hl5-bdv-z6-eu) - 14 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/jinkosolar-jkm615-635n-78hl4-v-f6-en-620w-variant/jinkosolar-jkm615-635n-78hl4-v-f6-en-625w-variant 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.