---
title: "Jinko Solar JKM735N-66HL5-BDV-Z6-EU vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant) - Solar Panel Comparison | ComparePV"
description: "Compare Jinko Solar JKM735N-66HL5-BDV-Z6-EU vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant) 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-jkm735n-66hl5-bdv-z6-eu/jinkosolar-jkm615-635n-78hl4-v-f6-en-635w-variant"
updated: 2026-09-11
---

# Jinko Solar JKM735N-66HL5-BDV-Z6-EU vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant)

JKM735N-66HL5-BDV-Z6-EU leads on the differences that matter

The largest is module efficiency: 0.94 pp more efficient. 5 of 19 comparable parameters are identical.


## The two panels


| Attribute | A | B |
| --- | --- | --- |
| Panel | [Jinko Solar JKM735N-66HL5-BDV-Z6-EU](https://comparepv.com/panel/jinko-solar-jkm735n-66hl5-bdv-z6-eu) | [Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant)](https://comparepv.com/panel/jinkosolar-jkm615-635n-78hl4-v-f6-en-635w-variant) |
| Manufacturer | Jinko Solar | Jinko Solar |
| Power | 735 Wp | 635 Wp |
| Efficiency | 23.66 % | 22.72 % |
| Technology | TOPCon | N-type |


## Where they differ

Ranked by how much the difference matters, not by datasheet order.


| Parameter | JKM735N-66HL5-BDV-Z6-EU | JKM615-635N-78HL4-(V)-F6-EN (635W variant) | Difference |
| --- | --- | --- | --- |
| Module efficiency | 23.66 % | 22.72 % | +0.94 pp for JKM735N-66HL5-BDV-Z6-EU |
| Rated power | 735 Wp | 635 Wp | +100 W for JKM735N-66HL5-BDV-Z6-EU |
| Power density | 236.6 Wp/m² | 227.2 Wp/m² | +9.4 Wp/m² for JKM735N-66HL5-BDV-Z6-EU |
| Weight | 37.5 kg | 29.5 kg | -8.0 kg for JKM615-635N-78HL4-(V)-F6-EN (635W variant) |
| Open-circuit voltage | 49.52 V | 56.85 V | 7.33 V apart |
| Short-circuit current | 18.88 A | 14.04 A | 4.84 A apart |
| Module area | 3.106 m² | 2.795 m² | 0.311 m² apart |
| Weight per kWp | 51.0 kg/kWp | 46.5 kg/kWp | -4.6 kg/kWp for JKM615-635N-78HL4-(V)-F6-EN (635W variant) |
| Cell technology | TOPCon | N-type | TOPCon vs N-type |
| Voltage at max power | 41.23 V | 47.46 V | 6.23 V apart |
| Current at max power | 17.83 A | 13.38 A | 4.45 A apart |
| Cell count | 132 | 156 | 24 cells apart |
| Bifacial | Yes | No | Yes vs No |
| Dimensions | 2384x1303x33 mm | 2465x1134x35 mm | 2384x1303x33 mm vs 2465x1134x35 mm |


## Every compared parameter


| Parameter | JKM735N-66HL5-BDV-Z6-EU | JKM615-635N-78HL4-(V)-F6-EN (635W variant) |
| --- | --- | --- |
| Rated power | 735 Wp | 635 Wp |
| Module efficiency | 23.66 % | 22.72 % |
| Power density | 236.6 Wp/m² | 227.2 Wp/m² |
| Open-circuit voltage | 49.52 V | 56.85 V |
| Voltage at max power | 41.23 V | 47.46 V |
| Short-circuit current | 18.88 A | 14.04 A |
| Current at max power | 17.83 A | 13.38 A |
| Temperature coefficient | -0.290 %/°C | -0.290 %/°C |
| Dimensions | 2384x1303x33 mm | 2465x1134x35 mm |
| Module area | 3.106 m² | 2.795 m² |
| Weight | 37.5 kg | 29.5 kg |
| Weight per kWp | 51.0 kg/kWp | 46.5 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 | N-type |
| Cell type | Monocrystalline | Monocrystalline |
| Cell count | 132 | 156 |
| Bifacial | Yes | 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, JKM735N-66HL5-BDV-Z6-EU:** 24,661 kWh
- **Cumulative output, JKM615-635N-78HL4-(V)-F6-EN (635W variant):** 21,306 kWh
- **Gap:** 3,355 kWh


## Output when hot


| Condition | Cell temperature | JKM735N-66HL5-BDV-Z6-EU | JKM615-635N-78HL4-(V)-F6-EN (635W variant) | Retained |
| --- | --- | --- | --- | --- |
| Standard test conditions | 25 °C | 735 W | 635 W | 100.0% of rated power |
| Cool, bright day | 40 °C | 703 W | 607 W | 95.7% of rated power |
| Typical summer roof | 55 °C | 671 W | 580 W | 91.3% of rated power |
| Hot roof | 70 °C | 639 W | 552 W | 87.0% of rated power |


## Against the whole database


| Measure | JKM735N-66HL5-BDV-Z6-EU | JKM615-635N-78HL4-(V)-F6-EN (635W variant) | Out of | Note |
| --- | --- | --- | --- | --- |
| Efficiency | #602 | #3,245 | 14,005 | JKM735N-66HL5-BDV-Z6-EU leads by 2,643 places |
| Power density | #582 | #3,252 | 14,005 | JKM735N-66HL5-BDV-Z6-EU leads by 2,670 places |
| Heat behaviour | #2,165 | #2,165 | 14,005 | Tied - the same position in the database |
| Weight | #4,360 | #1,173 | 14,005 | JKM615-635N-78HL4-(V)-F6-EN (635W variant) leads by 3,187 places |
| Warranty | #21 | #21 | 14,005 | Tied - the same position in the database |
| Overall | #239 | #2,249 | 14,005 | JKM735N-66HL5-BDV-Z6-EU leads by 2,010 places |


## Questions


### Which panel is better: Jinko Solar JKM735N-66HL5-BDV-Z6-EU or Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant)?

According to our database: **Jinko Solar JKM735N-66HL5-BDV-Z6-EU** has higher module efficiency (**23.66%** vs **22.72%**). See the full spec comparison and 30-year energy simulation above for a complete picture.


### What is the efficiency of Jinko Solar JKM735N-66HL5-BDV-Z6-EU and Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant)?

**Jinko Solar JKM735N-66HL5-BDV-Z6-EU** has a module efficiency of **23.66%**, while **Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (**635 W** variant)** is **22.72%**. Higher efficiency means more electricity from the same roof area - useful when space is limited.


### What cell technology does Jinko Solar JKM735N-66HL5-BDV-Z6-EU use vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant)?

**Jinko Solar JKM735N-66HL5-BDV-Z6-EU** uses **TOPCon** cells; **Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (**635 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 JKM735N-66HL5-BDV-Z6-EU and Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant)?

**Jinko Solar JKM735N-66HL5-BDV-Z6-EU** has a **30 years** power warranty; **Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (**635 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.


### Are Jinko Solar JKM735N-66HL5-BDV-Z6-EU and Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant) bifacial panels?

**Jinko Solar JKM735N-66HL5-BDV-Z6-EU** is bifacial (captures light from both faces); **Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (**635 W** variant)** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.


## Related comparisons

- [Jinko Solar JKM735N-66HL5-BDV-Z6-EU vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735W bin)](https://comparepv.com/compare/jinko-solar-jkm735n-66hl5-bdv-z6-eu/jinkosolar-jkm710-735n-66hl5-bdv-z3-eu-735w-bin) - The same specification on paper
- [Jinko Solar JKM735N-66HL5-BDV-Z6-EU vs Jinko Solar JKM735N-66HL5-BDV-Z3-EU](https://comparepv.com/compare/jinko-solar-jkm735n-66hl5-bdv-z6-eu/jinko-solar-jkm735n-66hl5-bdv-z3-eu) - The same specification on paper
- [Jinko Solar JKM735N-66HL5-BDV-Z6-EU vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin)](https://comparepv.com/compare/jinko-solar-jkm735n-66hl5-bdv-z6-eu/jinkosolar-jkm710-735n-66hl5-bdv-z3-eu-730w-bin) - The same specification on paper
- [Jinko Solar JKM735N-66HL5-BDV-Z6-EU vs Jinko Solar JKM730N-66HL5-BDV-Z3-EU](https://comparepv.com/compare/jinko-solar-jkm735n-66hl5-bdv-z6-eu/jinko-solar-jkm730n-66hl5-bdv-z3-eu) - The same specification on paper
- [Jinko Solar JKM735N-66HL5-BDV-Z6-EU vs Jinko Solar JKM730N-66HL5-BDV-Z6-EU](https://comparepv.com/compare/jinko-solar-jkm735n-66hl5-bdv-z6-eu/jinko-solar-jkm730n-66hl5-bdv-z6-eu) - The same specification on paper
- [Jinko Solar JKM735N-66HL5-BDV-Z6-EU vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (725W bin)](https://comparepv.com/compare/jinko-solar-jkm735n-66hl5-bdv-z6-eu/jinkosolar-jkm710-735n-66hl5-bdv-z3-eu-725w-bin) - 3 differences, the largest is module efficiency


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Source: https://comparepv.com/compare/jinko-solar-jkm735n-66hl5-bdv-z6-eu/jinkosolar-jkm615-635n-78hl4-v-f6-en-635w-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.