--- title: "BYD HSBK-33-725 725W Solar Panel - Specs & Review | ComparePV" description: "BYD HSBK-33-725 725W solar panel. Specs: 23.34% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/byd-hsbk-33-725" updated: 2026-09-11 --- # BYD HSBK-33-725 Space saver, no clear weak spot 222 panels in the segment HJT 700-750 W ## Identity - **Manufacturer:** BYD - **Model:** HSBK-33-725 - **Series:** HALO HSBK-33 - **Rated power:** 725 W - **Cell technology:** HJT - **Bifacial:** yes ## How it compares Compared against segment HJT 700-750 W (222 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 725 W | 715 W | Strong - top 24% | | | Module efficiency | 23.34% | 23.02% | Strong - top 24% | 943 | | Power density | 233.4 | 230.2 | Strong - top 24% | 936 | | Temperature coefficient | -0.240 | -0.240 | Typical | 13 | | Weight (kg) | 38.3 kg | 38.3 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.34% | 23.02% | Strong - top 24% | 943 | | Power density | 233.4 | 230.2 | Strong - top 24% | 936 | | Temperature coefficient | -0.240 | -0.240 | Typical | 13 | | Weight per kWp | 52.8 | 53.6 | Typical | 6,514 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **233.4 watts per square metre** - Top 24% of the HJT 700-750 W segment, against a median of 230.2. - **23.34% module efficiency** - Top 24% of the HJT 700-750 W segment, against a median of 23.02%. - **Best for:** Residential, commercial, utility-scale and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 725 W - **Efficiency:** 23.34 % - **Voltage at Pmax (Vmp):** 42.23 V - **Current at Pmax (Imp):** 17.18 A - **Open-circuit voltage (Voc):** 50.27 V - **Short-circuit current (Isc):** 18.26 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.240 %/degC - **Temperature coefficient of Voc:** -0.220 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** HJT - **Cell count:** 132 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 2384 mm - **Width:** 1303 mm - **Thickness:** 33 mm - **Weight:** 38.3 kg - **Area:** 3.11 m2 - **Power density:** 233.4 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:** 634 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 943 of 14005 | | Power density | 936 of 14005 | | Temperature coefficient | 13 of 14005 | | Weight | 6514 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Lowest Temperature Coefficient in the Segment** - HJT technology delivers a Pmax temperature coefficient of -0.24%/°C, while competing TOPCon modules (Jinko Tiger Neo, Vikram Suryava) range from -0.29 to -0.32%/°C. In practice, this translates to approximately 2–4% higher energy yield on hot summer days compared to TOPCon modules of equivalent power class. - **Zero LID and PID — No Induced Degradation** - The inherent structural symmetry of the HJT cell fully eliminates both Light-Induced Degradation (LID) and Potential-Induced Degradation (PID) — as confirmed by BYD in the official datasheet. TOPCon-based peer comparables offer only limited PID resistance and may require additional protective measures in system design. - **Bifaciality Up to 95% — Best-in-Class Rating** - The HSBK-33 series achieves a bifaciality factor of up to 95%, placing it among the highest values on the market (standard TOPCon modules typically reach 70–80%). With appropriate ground albedo (light-gray gravel, TPO membrane), this yields a real energy bonus of 5–15% above rated front-side power — particularly significant in ground-mount and flat-roof installations. - **Power and Efficiency Among the Best in Class** - The 735 Wp variant at 23.66% efficiency positions the series on par with leading peer comparables (Jinko Tiger Neo 66HL5-BDV: 735 Wp / 23.66%; Yingli PANDA 3.0 Plus 1: 735 Wp / 23.7%). Eight power variants (700–735 Wp) allow precise configuration matching for projects of varying scale. - **BYD — BNEF Tier 1, Manufacturer with a 30-Year Track Record** - BYD is listed as a bankable Tier 1 manufacturer by BNEF (Q1 2026), a prerequisite for third-party project financing. Founded in 1995, the company is a diversified global manufacturer operating across EVs, energy storage, and PV — minimizing bankruptcy risk and underpinning the credibility of its 30-year power warranty. ## Cons - **Product Warranty Limited to 12 Years** - A 12-year product warranty falls below the premium standard for the high-power HJT/TOPCon segment, where leading manufacturers offer 15–25 years (e.g., REC Alpha: 25 years, Panasonic EverVolt: 25 years). In the context of a 30-year power warranty, this gap may raise questions about warranty coverage for mechanical defects during the mid-life period of the installation. - **Higher Upfront Cost vs. TOPCon at Equivalent Efficiency** - HJT technology carries 15–20% higher manufacturing costs than TOPCon (higher CAPEX, greater silver consumption), which is directly reflected in the module price. The peer comparable Jinko Tiger Neo 66HL5-BDV offers identical peak power (735 Wp) and efficiency (23.66%) in TOPCon technology at a lower per-unit cost — a potentially decisive factor in large commercial installations where $/Wp sensitivity is high. ## About this series The BYD HALO HSBK-33 photovoltaic panel series introduces a new quality to the Polish market, based on innovative **N-type TOPCon cell technology**. It solves the key problem of power degradation over time, offering significantly higher resistance to LID and LeTID phenomena compared to traditional P-type modules. As a result, users can count on stable energy yields for decades, which directly translates into a faster return on investment. A unique feature of this series is its **high efficiency in low-light conditions**, which is crucial in the Polish climate during cloudy days. These modules stand out with their aesthetic finish, making them an ideal choice for modern residential and commercial installations. The use of **multi-busbar technology** minimizes the risk of micro-cracks and optimizes current flow, placing this series ahead of standard competitor solutions in terms of mechanical durability. This equipment is dedicated to investors looking for **maximum power density** from limited roof space while maintaining full operational safety. BYD HALO HSBK-33 is a solid combination of advanced cell physics and elegant design, eliminating typical compromises between aesthetics and the energy efficiency of the entire system. ## Notable figures - At 23.3% efficiency, this panel is on par with typical \*\*HJT 700-750W\*\* modules - 233.4 W/m² power density - 3.2 W/m² more than \*\*HJT 700-750W\*\* median (230.2 W/m²), more power per roof area - At -0.24%/°C, hot weather performance is typical for \*\*HJT 700-750W\*\* panels - 90% bifaciality enables rear-side power generation, boosting yield by 4-14% on reflective surfaces - In the top 7% for efficiency among all HJT panels ## Questions ### What is the HJT technology used in the BYD HALO HSBK-33 series and how does it differ from conventional panels? HJT (Heterojunction Technology) combines crystalline silicon cells with a thin amorphous silicon layer, enabling the BYD HALO HSBK-33 panels to achieve zero LID and PID losses along with an exceptionally low temperature coefficient of -0.30%/°C. This means that during summer heat, these modules lose significantly less power than lower-cost P-type modules, and over the entire 30-year product lifetime their output degrades at well under 0.7% per year. ### What warranty coverage applies to the BYD HALO HSBK-33 panels and what does it include? The HALO HSBK-33 series is backed by a 12-year product warranty covering material and workmanship defects, as well as a 30-year linear power output warranty. The linear power warranty means the manufacturer commits to maintaining a defined performance level for three decades — one of the longest power guarantees available on the market — which significantly reduces long-term investment risk. ### Are the BYD HALO HSBK-33 panels bifacial, and how much additional energy do they generate from the rear side? Yes, the HSBK-33 series are bifacial modules with a bifaciality factor of up to 95%. In practice, with good ground albedo — such as light-colored gravel, a white roofing membrane, or snow cover — the rear side can generate between 5% and up to 30% additional energy compared to front-side-only output. The greatest bifacial gains are realized in ground-mount and carport installations, though a measurable benefit is also observed on flat rooftop systems. ### Is 735 Wp too large for a residential rooftop, and how should the number of BYD HALO HSBK-33 panels be sized? At 735 Wp, this is a large-format module designed primarily for commercial installations and larger prosumer systems. For a typical 10 kWp residential system, only 14 modules would be required, resulting in fewer string connections and lower balance-of-system (BoS) installation costs. Before purchasing, it is important to verify the load-bearing capacity of the roof structure, as modules in this power class have larger dimensions and greater weight than standard 400–450 Wp panels. ### How do the BYD HALO HSBK-33 panels perform on overcast days typical of the Polish climate? HJT technology exhibits excellent responsiveness under diffuse light conditions, making these modules particularly well-suited to Poland's climate, where clear-sky days are limited in number. The low temperature coefficient (-0.30%/°C) also means that cool, sunny days in spring and autumn yield higher energy output compared to older P-type BSF modules. Users can expect consistent energy production throughout the entire year. ### Is BYD a reliable solar panel manufacturer, and what does Tier 1 status mean? BYD is a Chinese technology conglomerate with a leading position in the battery storage and electric mobility markets, classified as a Tier 1 manufacturer by Bloomberg NEF. Tier 1 status confirms the company's financial stability, consistent production quality, and ability to honor long-term warranties. For investors in Poland, this provides genuine assurance that the manufacturer will remain in business throughout the entire 30-year power output warranty period. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/hsbk-33-058be5f703c8.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | -45 W, lighter, +1.9 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | -50 W, lighter, +1.7 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | -25 W, lighter, +1.7 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | -30 W, lighter, +1.6 pp | | [AIKO AIKO-A690-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a690-mae78dw) | 690 W | -35 W, lighter, +1.4 pp | | [AIKO AIKO-A685-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a685-mae78dw) | 685 W | -40 W, lighter, +1.2 pp | | [Trina Solar TSM-NEG21C.20Q-760](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-760) | 760 W | +35 W, hotter, +1.2 pp | | [AIKO AIKO-A680-MAH78Dw](https://comparepv.com/panel/aiko-aiko-a680-mah78dw) | 680 W | -45 W, lighter, +1.0 pp | | [BYD MSBK-33 645](https://comparepv.com/panel/byd-msbk-33-645) | 645 W | -80 W, hotter, -2.6 pp | | [BYD MSBK-33 650](https://comparepv.com/panel/byd-msbk-33-650) | 650 W | -75 W, hotter, -2.4 pp | | [BYD MSTK-33 655](https://comparepv.com/panel/byd-mstk-33-655) | 655 W | -70 W, hotter, -2.2 pp | | [BYD MSTK-33 660](https://comparepv.com/panel/byd-mstk-33-660) | 660 W | -65 W, hotter, -2.1 pp | | [BYD MSBK-33 665](https://comparepv.com/panel/byd-msbk-33-665) | 665 W | -60 W, hotter, -1.9 pp | | [BYD MSBK-33 670](https://comparepv.com/panel/byd-msbk-33-670) | 670 W | -55 W, hotter, -1.8 pp | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +80 W, hotter, +1.8 pp | | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 W | +75 W, hotter, +1.6 pp | --- Source: https://comparepv.com/panel/byd-hsbk-33-725 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.