--- title: "BYD NSBK-33-690 690W Solar Panel - Specs & Review | ComparePV" description: "BYD NSBK-33-690 690W solar panel. Specs: 22.22% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/byd-nsbk-33-690" updated: 2026-09-11 --- # BYD NSBK-33-690 Strong in heat, no clear weak spot 249 panels in the segment TOPCon 650-700 W ## Identity - **Manufacturer:** BYD - **Model:** NSBK-33-690 - **Series:** AURO N NSBK-33 - **Rated power:** 690 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 650-700 W (249 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 690 W | 665 W | Strong - top 21% | | | Module efficiency | 22.22% | 22.40% | Typical | 5,753 | | Power density | 222.1 | 223.7 | Typical | 5,734 | | Temperature coefficient | -0.278 | -0.290 | Strong - top 15% | 1,295 | | Weight (kg) | 38.3 kg | 34.6 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.22% | 22.40% | Typical | 5,753 | | Power density | 222.1 | 223.7 | Typical | 5,734 | | Temperature coefficient | -0.278 | -0.290 | Strong - top 15% | 1,295 | | Weight per kWp | 55.5 | 53.2 | Typical | 9,882 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.278 %/°C temperature coefficient** - Top 15% of the TOPCon 650-700 W segment, against a median of -0.290. - **Best for:** Residential, commercial, utility-scale, shaded-installations and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 690 W - **Efficiency:** 22.22 % - **Voltage at Pmax (Vmp):** 40.28 V - **Current at Pmax (Imp):** 17.13 A - **Open-circuit voltage (Voc):** 48.12 V - **Short-circuit current (Isc):** 18.08 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.278 %/degC - **Temperature coefficient of Voc:** -0.239 %/degC - **Temperature coefficient of Isc:** 0.044 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **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:** 222.1 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:** 603 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 5753 of 14005 | | Power density | 5734 of 14005 | | Temperature coefficient | 1295 of 14005 | | Weight | 9882 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon with Zero LID** - N-type cells eliminate Light-Induced Degradation (LID) present in legacy PERC technology, meaning there is no initial power drop during the first weeks of operation. A power temperature coefficient of -0.30%/°C places this series at the top of its segment and translates into measurably higher annual energy yield in Poland's variable-irradiance climate. - **Up to 23.19% Efficiency — on Par with Segment Leaders** - The maximum module efficiency of 23.19% at 720 Wp is virtually identical to direct competitors: Gamko GKA210N132 (23.18%), Renesola RS9-700~720NBG-E1 (23.18%), and DMEGC DMxxxG12T-B66HSW (23.20%). The series matches its peers in power density, which is critical when rooftop area is constrained. - **Bifacial Construction with >80% Bifaciality Factor** - The bifacial module with a declared bifaciality factor above 80% enables additional energy harvest from reflected irradiance. On installations with high-albedo surfaces (white membrane, gravel, snow), this translates into a 5–15% increase in annual energy yield compared to monofacial modules of the same rated power. - **30-Year Linear Warranty with \<0.4%/Year Degradation** - BYD AURO N guarantees annual power loss below 0.4%, whereas standard PERC/P-type modules in this price segment typically specify 0.55–0.70% per year. Over a 30-year operating horizon, this difference amounts to several additional percentage points of retained power output, directly reducing the system's LCOE. - **BYD — Tier 1 Manufacturer with Full Corporate Backing** - BYD (founded 1995) is classified by BloombergNEF as a Tier 1 (bankable) manufacturer, a prerequisite for project financing by lending institutions. Membership in the BYD Group — one of the world's largest industrial conglomerates — minimizes the risk of warranty service unavailability over a 30-year operating horizon, in contrast to smaller Tier 2 and Tier 3 manufacturers. ## Cons - **Product Warranty Limited to 12 Years** - BYD provides a 12-year product warranty against manufacturing defects, whereas Jinko Solar, JA Solar, Trina Solar, and most other Tier 1 manufacturers in the equivalent price segment standardly offer 25 years. Modules with a 30-year service life are therefore covered against factory defects for only the first 40% of their operational period — a tangible risk factor for institutional investors and residential prosumers seeking comprehensive coverage. ## About this series The BYD AURO N NSBK-33 photovoltaic panel series sets new performance standards thanks to the use of advanced **N-type cells in TOPCon technology**. These premium-class modules have been designed to maximize yields in demanding lighting conditions, making them an ideal choice for the often cloudy Polish sky. A key differentiator of the series is the **Pure Black aesthetics**, combining an elegant, uniform look with high power density, allowing for the creation of a modern and prestigious installation on a residential roof or a large commercial facility. Thanks to **zero LID degradation** (Light Induced Degradation) technology, investors can forget about a sudden drop in efficiency in the initial phase of operation, enjoying stable electricity production for decades. The use of SMBB solutions and half-cut construction significantly reduces resistive losses, and the low temperature coefficient of power guarantees higher efficiency even during summer heat. This product is aimed at those looking for the **lowest cost of energy (LCOE)** and uncompromising reliability, backed by a 30-year linear power output warranty. These modules solve the problem of limited installation space, offering record efficiency while maintaining high mechanical resistance to snow and wind. This is a solution that stands out from the competition with a unique combination of technical innovation and minimalist design. ## Notable figures - At 22.2% efficiency, this panel is on par with typical \*\*TOPCon 650-700W\*\* modules - Power density of 222.1 W/m² matches the \*\*TOPCon 650-700W\*\* median - Temperature coefficient of -0.28%/°C matches the \*\*TOPCon 650-700W\*\* median - At 38.3 kg, this panel is 3.7 kg heavier than the \*\*TOPCon 650-700W\*\* median (34.6 kg) - more demanding for installation crews - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof ## Questions ### What warranty does the BYD AURO N NSBK-33 series carry, and what exactly does it cover? The BYD AURO N NSBK-33 series comes with a 12-year product warranty covering defects in workmanship and materials, along with a 30-year linear power output warranty. This means the manufacturer guarantees a defined performance level throughout three full decades of operation, with an annual degradation rate below 0.7%. As a Tier 1 manufacturer with a global service network, BYD provides genuine assurance that warranty claims can be enforced effectively. ### What is TOPCon technology, and why should it be chosen for the AURO N NSBK-33 series over a less expensive PERC module? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell architecture featuring an additional silicon oxide passivation layer that minimizes charge-carrier recombination. In practice, this translates to module efficiency of approximately 23.2%, compared to roughly 21–22% for PERC, zero light-induced degradation (LID) at the start of operation, and a lower temperature coefficient of around −0.30%/°C. Over a 30-year service life, the cumulative energy yield difference between TOPCon and PERC is substantial, which justifies the higher upfront purchase cost. ### Do bifacial BYD AURO N NSBK-33 panels make sense on a residential pitched roof? Yes, although the bifacial gain is greatest in ground-mount or flat-roof installations with a highly reflective surface beneath. On a pitched roof, the rear side of the NSBK-33 still captures diffuse irradiance reflected from roof tiles or underlayment membranes, which can contribute an additional 3–8% energy yield. With a bifaciality factor above 80%, even where rear-side irradiance is limited, the investment remains cost-effective compared to monofacial panels at the same price point. ### Do the 720 Wp BYD AURO N NSBK-33 panels perform well under Polish conditions, where overcast skies are common? Yes. N-type TOPCon cells exhibit superior spectral response under low-irradiance conditions compared to conventional P-type cells. The half-cut cell design combined with SMBB (Super Multi-Busbar) technology reduces mismatch losses under partial shading, which is typical on Polish rooftops. The high nominal power of 720 Wp, paired with a low temperature coefficient, also means the NSBK-33 performs particularly well in winter, when cell temperature is close to STC conditions, rather than suffering output losses from overheating during summer. ### How does the Pure Black version of the BYD AURO N NSBK-33 series differ from the standard white-frame version? The Pure Black variant (denoted by the BK suffix in the model designation NSBK-33) features a black anodized aluminum frame and a black backsheet or dark glass, giving the entire module a uniform, aesthetically refined appearance. This option is especially popular on single-family residential rooftops and in architectural projects where the visual integration of the PV system is a priority. The electrical specifications and warranty terms are identical to those of the standard version, so the choice is purely aesthetic with no compromise in performance. ### Will the 720 W BYD AURO N NSBK-33 panel be compatible with a typical residential inverter, and what are its physical dimensions? A 720 Wp module requires an inverter capable of handling higher input voltages and currents than those designed for 400–450 Wp panels, so the inverter's maximum MPP input current must be verified before purchase. According to available data, the NSBK-33 series uses G12 (210 mm) wafer-format cells and has typical physical dimensions of approximately 2,384 × 1,303 mm. The higher per-panel power output reduces the total number of modules needed to reach a given system size, which simplifies DC wiring and lowers balance-of-system (BoS) installation costs compared to lower-wattage panels. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/NSBK-33EN-4e02ab6beb2b.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | -40 W, lighter, +3.0 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | Cooler, lighter, +3.0 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | Cooler, lighter, +2.8 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | -45 W, lighter, +2.8 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | Cooler, lighter, +2.8 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | Cooler, lighter, +2.7 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | -20 W, lighter, +2.6 pp | | [BYD MSBK-33 645](https://comparepv.com/panel/byd-msbk-33-645) | 645 W | -45 W, hotter, -1.5 pp | | [BYD MSBK-33 650](https://comparepv.com/panel/byd-msbk-33-650) | 650 W | -40 W, hotter, -1.3 pp | | [BYD MSTK-33 655](https://comparepv.com/panel/byd-mstk-33-655) | 655 W | Hotter, -1.1 pp, -5 yr warranty | | [BYD MSTK-33 660](https://comparepv.com/panel/byd-mstk-33-660) | 660 W | Hotter, -1.0 pp, -5 yr warranty | | [BYD MSBK-33 665](https://comparepv.com/panel/byd-msbk-33-665) | 665 W | -25 W, hotter, -0.8 pp | | [BYD MSBK-33 670](https://comparepv.com/panel/byd-msbk-33-670) | 670 W | -20 W, hotter, -0.6 pp | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +115 W, cooler, +2.9 pp | | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 W | +110 W, cooler, +2.7 pp | | [AIKO AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 W | +105 W, cooler, +2.6 pp | --- Source: https://comparepv.com/panel/byd-nsbk-33-690 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.