--- title: "Jetion JT745SLk(B) vs Jetion JT750SLk(B) - Solar Panel Comparison | ComparePV" description: "Compare Jetion JT745SLk(B) vs Jetion JT750SLk(B) side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/jetion-jt745slk-b/jetion-jt750slk-b" updated: 2026-09-11 --- # Jetion JT745SLk(B) vs Jetion JT750SLk(B) 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 | [Jetion JT745SLk(B)](https://comparepv.com/panel/jetion-jt745slk-b) | [Jetion JT750SLk(B)](https://comparepv.com/panel/jetion-jt750slk-b) | | Manufacturer | Jetion | Jetion | | Power | 745 Wp | 750 Wp | | Efficiency | 24.00 % | 24.10 % | | Technology | HJT | HJT | ## Every compared parameter | Parameter | JT745SLk(B) | JT750SLk(B) | | --- | --- | --- | | Rated power | 745 Wp | 750 Wp | | Module efficiency | 24.00 % | 24.10 % | | Power density | 239.8 Wp/m² | 241.4 Wp/m² | | Open-circuit voltage | 50.65 V | 50.70 V | | Voltage at max power | 42.68 V | 42.72 V | | Short-circuit current | 18.62 A | 18.71 A | | Current at max power | 17.46 A | 17.56 A | | Temperature coefficient | -0.240 %/°C | -0.240 %/°C | | Dimensions | 2384x1303x33 mm | 2384x1303x33 mm | | Module area | 3.106 m² | 3.106 m² | | Weight | 36.4 kg | 36.4 kg | | Weight per kWp | 48.9 kg/kWp | 48.5 kg/kWp | | Product warranty | 15 yrs | 15 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.30 %/yr | 0.30 %/yr | | Cell technology | HJT | HJT | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 132 | 132 | | 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 (-0.240 %/°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, JT745SLk(B):** 25,385 kWh - **Cumulative output, JT750SLk(B):** 25,556 kWh - **Gap:** 171 kWh ## Output when hot | Condition | Cell temperature | JT745SLk(B) | JT750SLk(B) | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 745 W | 750 W | 100.0% of rated power | | Cool, bright day | 40 °C | 718 W | 723 W | 96.4% of rated power | | Typical summer roof | 55 °C | 691 W | 696 W | 92.8% of rated power | | Hot roof | 70 °C | 665 W | 669 W | 89.2% of rated power | ## Against the whole database | Measure | JT745SLk(B) | JT750SLk(B) | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #303 | #219 | 14,005 | JT750SLk(B) leads by 84 places | | Power density | #339 | #219 | 14,005 | JT750SLk(B) leads by 120 places | | Heat behaviour | #13 | #13 | 14,005 | Tied - the same position in the database | | Weight | #2,534 | #2,337 | 14,005 | JT750SLk(B) leads by 197 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #97 | #72 | 14,005 | JT750SLk(B) leads by 25 places | ## Questions ### Which panel is better: Jetion JT745SLk(B) or Jetion JT750SLk(B)? According to our database: **Jetion JT750SLk(B)** has higher module efficiency (**24.10%** vs **24.00%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Jetion JT745SLk(B) and Jetion JT750SLk(B)? **Jetion JT745SLk(B)** has a module efficiency of **24.00%**, while **Jetion JT750SLk(B)** is **24.10%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Jetion JT745SLk(B) use vs Jetion JT750SLk(B)? **Jetion JT745SLk(B)** uses **HJT** cells; **Jetion JT750SLk(B)** uses **HJT**. 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 Jetion JT745SLk(B) and Jetion JT750SLk(B)? **Jetion JT745SLk(B)** has a **30 years** power warranty; **Jetion JT750SLk(B)** 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 Jetion JT745SLk(B) and Jetion JT750SLk(B) bifacial panels? Both **Jetion JT745SLk(B)** and **Jetion JT750SLk(B)** 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 - [Jetion JT745SLk(B) vs Jetion JT755SLk(B)](https://comparepv.com/compare/jetion-jt745slk-b/jetion-jt755slk-b) - 3 differences, the largest is module efficiency - [Jetion JT745SLk(B) vs Jetion JT740SLk(B)](https://comparepv.com/compare/jetion-jt745slk-b/jetion-jt740slk-b) - One difference: module efficiency - [Jetion JT745SLk(B) vs Jetion JT735SLk(B)](https://comparepv.com/compare/jetion-jt745slk-b/jetion-jt735slk-b) - 3 differences, the largest is module efficiency - [Jetion JT745SLk(B) vs Jetion JT730SLk(B)](https://comparepv.com/compare/jetion-jt745slk-b/jetion-jt730slk-b) - 3 differences, the largest is module efficiency - [Jetion JT745SLk(B) vs Jetion JT725SLk(B)](https://comparepv.com/compare/jetion-jt745slk-b/jetion-jt725slk-b) - 3 differences, the largest is module efficiency - [Jetion JT745SLk(B) vs Jetion JT720SLk(B)](https://comparepv.com/compare/jetion-jt745slk-b/jetion-jt720slk-b) - 4 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/jetion-jt745slk-b/jetion-jt750slk-b 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.