--- title: "Jinko Solar JKM645N-78HL4-BDV-F9-EU 645W Solar Panel - Specs & Review | ComparePV" description: "Jinko Solar JKM645N-78HL4-BDV-F9-EU 645W solar panel. Specs: 23.07% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/jinko-solar-co-ltd-jkm645n-78hl4-bdv-f9-eu" updated: 2026-09-11 --- # Jinko Solar JKM645N-78HL4-BDV-F9-EU Solid all-round for its segment 1,086 panels in the segment TOPCon 600-650 W ## Identity - **Manufacturer:** Jinko Solar - **Model:** JKM645N-78HL4-BDV-F9-EU - **Series:** Tiger Neo 78HL4-BDV (Dual glass bifacial) - **Rated power:** 645 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 600-650 W (1086 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 645 W | 620 W | Strong - top 3% | | | Module efficiency | 23.07% | 22.80% | Typical | 1,683 | | Power density | 230.7 | 227.7 | Typical | 1,654 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 34.0 kg | 32.7 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.07% | 22.80% | Typical | 1,683 | | Power density | 230.7 | 227.7 | Typical | 1,654 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 52.7 | 53.1 | Typical | 6,362 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | - **Best for:** Commercial, utility-scale and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 645 W - **Efficiency:** 23.07 % - **Voltage at Pmax (Vmp):** 48.17 V - **Current at Pmax (Imp):** 13.39 A - **Open-circuit voltage (Voc):** 57.47 V - **Short-circuit current (Isc):** 14.04 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 156 - **Bifacial:** yes ### Physical - **Length:** 2465 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 34.0 kg - **Area:** 2.80 m2 - **Power density:** 230.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 564 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 1683 of 14005 | | Power density | 1654 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 6362 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon cells – near-zero LID** - TOPCon technology virtually eliminates light-induced degradation (LID), with a temperature coefficient of Pmax at -0.29 %/°C – more favorable than typical PERC cells (-0.35 %/°C). Under Central European summer conditions (30–35 °C), this translates to roughly 1.5–2% higher daily energy yield compared to older cell technologies. - **Up to 23.25% efficiency – top-of-segment** - Peak efficiency of 23.25% places the series on par with leading peer comparables: BYD AURO N NLBK-39 (23.25%) and Einnova TOPCon 630–650 W (23.25%). Only Astronergy ASTRO N5 edges ahead at 23.3% — a 0.05 pp gap that is negligible in real-world project design. - **30-year linear power warranty, 87.4% retention** - Jinko Solar guarantees at least 87.4% of rated power after 30 years, with annual degradation capped at 0.4% after year one. This is 5 years longer than the 25-year warranty standard offered by many competitors and directly reduces the calculated LCOE for utility-scale projects with long financing horizons. - **Dual glass construction – durability and PID resistance** - Replacing the rear backsheet with a second 2 mm glass pane eliminates moisture ingress, reduces thermally induced microcracking, and effectively suppresses PID. The datasheet confirms a snow load rating of 5400 Pa — relevant for Central European climate conditions. - **Jinko Solar – BNEF #1 bankable (10th consecutive year)** - Jinko Solar achieved 100% bankability in the BloombergNEF PV Module Bankability Survey for 2024, making it the only manufacturer to hold that distinction for 10 straight years. In Q2 2026, it holds the top position in the BNEF Tier 1 ranking (120 GW/year production capacity), minimizing counterparty risk in externally financed projects. ## Cons - **Weight 34.6 kg – limitation for lightweight rooftops** - The dual glass build raises module weight to 34.6 kg — approximately 15–20% heavier than comparable monofacial glass-backsheet modules of similar wattage (~29–31 kg). For rooftop installations on older buildings, this may require a structural engineering assessment or additional reinforcement, generating extra BoS costs. ## About this series Jinko Solar's Tiger Neo 78HL4-BDV (Dual-glass Bifacial) is designed for maximum energy yield where every square meter counts and for stable performance over years. The use of **dual-glass construction** reduces the module's sensitivity to environmental conditions, improves resistance to micro-cracking, and enhances predictability in the long term. The key advantage is **bifacial technology** - the panel utilizes reflected light from the ground, significantly boosting energy production in ground-mounted installations, flat roofs, and on light surfaces. This series relies on **N-type cells**, valued for their slower degradation and good performance at higher temperatures - ideal for Polish summer conditions and industrial projects. The modules are also designed for demanding environments thanks to their **high mechanical durability** and refined connection structure. The Tiger Neo 78HL4-BDV is an excellent choice for utility-scale PV farms, large commercial rooftops, and investors seeking durability and additional yield from the rear side of the module. ## Notable figures - At 23.1% efficiency, this panel is on par with typical \*\*TOPCon 600-650W\*\* modules - At 230.7 W/m² power density, this panel generates 3.0 W/m² more per unit area than \*\*TOPCon 600-650W\*\* median (227.7 W/m²) - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 600-650W\*\* median - Weight of 34.0 kg is 1.3 kg above \*\*TOPCon 600-650W\*\* median (32.7 kg) - verify structural support - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof ## Questions ### What warranty comes with the Jinko Solar Tiger Neo 78HL4-BDV panels? Jinko Solar provides a 12-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty. At year 30, the module is guaranteed to retain at least 87.4% of its rated power. As a Tier 1 manufacturer, Jinko Solar offers solid warranty claim support, making this series a reliable choice for long-term investment projects. ### How much extra energy does the bifacial design of the Tiger Neo 78HL4-BDV actually produce? The rear side generates additional power by capturing light reflected from the ground surface. The real-world bifacial gain depends on albedo: a light gravel bed or white roofing membrane can boost output by 5–15% compared to a monofacial module. The effect is most pronounced in ground-mounted systems with grass or light-colored surfaces and on flat roofs with adequate clearance from the surface. ### Does the TOPCon technology in the Tiger Neo 78HL4-BDV handle high summer temperatures better than older PERC modules? Yes. The N-type TOPCon cells carry a temperature coefficient of -0.29%/°C, while standard PERC modules typically reach -0.34 to -0.36%/°C. On hot days when a module can heat up to 70°C, this translates into measurably lower power losses. N-type cells also exhibit significantly reduced LID and LeTID degradation, meaning first-year power loss is kept to a minimum. ### Are the Jinko Tiger Neo 78HL4-BDV panels a good fit for a utility-scale ground-mounted PV plant? Yes, this series is designed primarily for utility-scale and large C&I applications. At up to 650 Wp, fewer modules are needed per megawatt, reducing BoS costs. The dual glass construction withstands snow loads up to 5400 Pa and wind loads up to 2400 Pa. Compatibility with 1500 V DC systems minimizes resistive losses over long string cable runs. ### What are the dimensions and weight of the Tiger Neo 78HL4-BDV, and will standard racking systems support it? The module measures 2465 × 1134 × 30 mm and weighs approximately 34 kg. This is a large-format module intended for utility and C&I segments. Before installation, verify that the racking structure is rated for the static load and dynamic wind/snow forces. Major racking manufacturers such as K2, Schletter, and Renusol offer rail systems compatible with modules of this width. ### How does the Tiger Neo 78HL4-BDV differ from older Jinko modules based on PERC technology? The key differences are the shift to N-type TOPCon cells instead of P-type PERC, higher efficiency up to 23.25% versus typical 20–21% for PERC, and lower temperature and LID degradation. Dual glass replaces the rear backsheet, extending service life and reducing the risk of microcracks. The power warranty extends to 30 years, and the bifacial design enables energy harvesting from both sides of the module. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/jkm625-650n-78hl4-bdv-f9-eu-e6c3e4e38b15.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +2.1 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +35 W, lighter, +2.1 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +30 W, lighter, +1.9 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +1.9 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +50 W, cooler, +1.8 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | Cooler, lighter, +1.7 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | Cooler, lighter, +1.7 pp | | [Jinko Solar JKM605N-78HL4-BDV](https://comparepv.com/panel/jinko-solar-jkm605n-78hl4-bdv) | 605 W | -40 W, hotter, -1.4 pp | | [Jinko Solar JKM610N-78HL4-BDV](https://comparepv.com/panel/jinko-solar-jkm610n-78hl4-bdv) | 610 W | -35 W, hotter, -1.2 pp | | [Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (615W)](https://comparepv.com/panel/jinkosolar-jkm615-635n-78hl4-v-f6-en-615w) | 615 W | -30 W, lighter, -1.1 pp | | [Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W)](https://comparepv.com/panel/jinkosolar-jkm615-635n-78hl4-v-f6-en-620w) | 620 W | -25 W, lighter, -0.9 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +55 W, cooler, +1.9 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | +25 W, cooler, +1.7 pp | --- Source: https://comparepv.com/panel/jinko-solar-co-ltd-jkm645n-78hl4-bdv-f9-eu Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.