--- title: "Canadian Solar CS3K-335MB-AG 335W Solar Panel - Specs & Review | ComparePV" description: "Canadian Solar CS3K-335MB-AG 335W solar panel. Specs: 19.90% efficiency, Polycrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/canadian-solar-cs3k-335mb-ag" updated: 2026-09-11 --- # Canadian Solar CS3K-335MB-AG Space saver, no clear weak spot 286 panels in the segment PERC 300-350 W ## Identity - **Manufacturer:** Canadian Solar - **Model:** CS3K-335MB-AG - **Series:** BiKu CS3K-MB-AG - **Rated power:** 335 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 300-350 W (286 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 335 W | 325 W | Strong - top 22% | | | Module efficiency | 19.90% | 19.00% | Strong - top 15% | 12,331 | | Power density | 199.1 | 190.0 | Strong - top 13% | 12,324 | | Temperature coefficient | -0.360 | -0.360 | Typical | 12,345 | | Weight (kg) | 22.3 kg | 19.0 kg | Typical | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 15% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 19.90% | 19.00% | Strong - top 15% | 12,331 | | Power density | 199.1 | 190.0 | Strong - top 13% | 12,324 | | Temperature coefficient | -0.360 | -0.360 | Typical | 12,345 | | Weight per kWp | 66.6 | 60.0 | Typical | 13,169 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 15% | 21 | ### Strengths - **199.1 watts per square metre** - Top 13% of the PERC 300-350 W segment, against a median of 190.0. - **19.90% module efficiency** - Top 15% of the PERC 300-350 W segment, against a median of 19.00%. - **30 year performance warranty** - Top 15% of the PERC 300-350 W segment, against a median of 25 yrs. - **Best for:** Residential and commercial. ## Specification ### Electrical - **Rated power (Pmax):** 335 W - **Efficiency:** 19.90 % - **Voltage at Pmax (Vmp):** 33.90 V - **Current at Pmax (Imp):** 9.89 A - **Open-circuit voltage (Voc):** 41.20 V - **Short-circuit current (Isc):** 10.39 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.360 %/degC - **Temperature coefficient of Voc:** -0.290 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 41 degC ### Cell and construction - **Cell type:** Polycrystalline - **Cell technology:** PERC - **Cell count:** 120 - **Bifacial:** yes - **Bifacial gain:** 30.00 ### Physical - **Length:** 1696 mm - **Width:** 992 mm - **Thickness:** 30 mm - **Weight:** 22.3 kg - **Area:** 1.68 m2 - **Power density:** 199.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12331 of 14005 | | Power density | 12324 of 14005 | | Temperature coefficient | 12345 of 14005 | | Weight | 13169 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Bifacial technology with dual glass** - The BiKu's dual-glass design eliminates the rear backsheet and allows the module to capture energy reflected off the ground – the manufacturer claims up to 30% additional rear-side yield over bright surfaces, a clear advantage over conventional mono-PERC panels with a rear backsheet. - **30-year linear power warranty** - A 12-year product warranty combined with a 30-year power warranty represents premium-tier terms – longer than the typical 25-year power warranty many tier-1 manufacturers offered at the time of this series' launch (2018). - **120 half-cut PERC cells with MBB** - The 120 half-cut cell layout with MBB/5BB busbar technology reduces current losses and improves partial shading tolerance, translating into higher real-world productivity in rooftop installations with intermittent shading (chimneys, antennas). - **Tier-1, bankable manufacturer** - Canadian Solar is a Tier-1 (bankable) manufacturer founded in Canada in 2001 – this status simplifies project financing through banks and leasing institutions, which matters for larger commercial investments. - **Mechanical durability of the dual-glass frame** - The frameless dual-glass construction avoids frame corrosion/degradation and adds rigidity, increasing resistance to heavy snow and wind loads, which extends system lifetime and lowers lifecycle LCOE. ## Cons - **Discontinued in 2021** - The BiKu CS3K-MB-AG series has been discontinued (released 2018, end of production 2021), meaning limited availability of spare parts, difficult warranty replacements, and no manufacturer service support for new installations. - **Lower efficiency than newer competing modules** - The maximum efficiency of 19.9% is comparable to Selfa SV120M.5(3) (19.8% at 335 Wp) but falls short of SunLink LUXMAX (20.16% at the same 335 Wp), meaning a competitor achieves higher efficiency at the same peak power — i.e., a smaller module footprint for equal output. ## About this series The BiKu CS3K-MB-AG series is a bifacial photovoltaic module lineup from Canadian Solar engineered to squeeze extra output from every ray of sunlight. These panels use **bifacial technology** with a dual tempered glass construction instead of a rear backsheet, allowing the module to generate power from both sides and capture additional energy reflected off the ground. The **monocrystalline PERC half-cut cells**, arranged in a 120-cell layout and connected with MBB or 5BB busbar technology, reduce resistive losses and improve **partial shading tolerance**. The dual-glass design removes the frame's exposure to degradation, boosts mechanical resistance to heavy snow and wind loads, and extends system lifespan, contributing to a **lower levelized cost of energy (LCOE)**. A low power temperature coefficient means the module retains more output on hot days, which matters for rooftop installations with limited ventilation. The BiKu series fits both rooftop and ground-mount projects, especially where light-colored surfaces or gravel maximize rear-side energy gain. It's a strong choice for investors looking to boost yield per square meter of roof space without adding more modules, all while relying on the proven, field-tested reliability of standard mono-PERC silicon technology. ## Notable figures - At 19.9% efficiency, this panel is on par with typical \*\*PERC 0-400W\*\* modules - Power density of 199.1 W/m² packs 4.7 W/m² more into the same footprint vs \*\*PERC 0-400W\*\* median (194.4 W/m²) - Temperature coefficient of -0.36%/°C matches the \*\*PERC 0-400W\*\* median - At 22.3 kg (1.8 kg above \*\*PERC 0-400W\*\* median of 20.5 kg), requires checking roof load capacity - Bifaciality factor of 70% can add 4-10% extra yield with reflective mounting surface ## Questions ### How does the BiKu CS3K-MB-AG panel differ from a standard mono-PERC module? The main difference is the bifacial glass-glass construction with tempered glass on both sides instead of a rear backsheet. This lets the module generate extra energy from light reflected off the ground, which can add a few percent more yield versus a standard mono-PERC panel of the same 335 Wp rating over a light-colored surface. ### Is the BiKu CS3K-MB-AG series still available for purchase? No, the BiKu CS3K-MB-AG series has been discontinued by Canadian Solar. Units may still be found through distributor stock or salvage from decommissioned systems, but new purchases should look at the manufacturer's current bifacial lineup, including newer TOPCon-based series. ### What warranty does Canadian Solar offer on the BiKu CS3K-MB-AG panels? The manufacturer provided a 12-year product warranty and a 30-year linear power output warranty. As a Tier 1 producer headquartered in Canada, Canadian Solar offered global warranty support, though buyers of discontinued stock should confirm current warranty servicing with their local distributor. ### Does the bifacial BiKu panel need special mounting to work efficiently? Yes, to capture the bifacial gain the module should be mounted on an elevated racking system with clearance above the roof or ground, ideally over a light-colored surface such as a white roof, gravel, or reflective sheeting. Mounting directly on a dark roof surface limits the extra rear-side energy gain. ### How many cells does the BiKu CS3K-MB-AG panel have and why does it matter? The module uses 120 monocrystalline PERC half-cut cells connected with MBB or 5BB technology. Splitting cells in half reduces current losses and improves shading tolerance, for example from a chimney or antenna, so the panel loses less power output than a conventional full-cell design under partial shade. ### Do BiKu CS3K-MB-AG panels perform well in high summer temperatures? Yes, the series has a low power temperature coefficient, meaning it loses less output during hot weather. This matters especially on poorly ventilated roof installations, where module temperatures tend to run higher than in ground-mount systems with better airflow. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Canadian_Solar-Datasheet-BiKu_CS3K-MB-AG_EN-b9610f91e466.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [SunLink LNSK-340M](https://comparepv.com/panel/sunlink-lnsk-340m) | 340 W | Lighter, -5 yr warranty | | [Canadian Solar CS3K-330P](https://comparepv.com/panel/canadian-solar-cs3k-330p) | 330 W | Lighter, -5 yr warranty | | [SunLink LNSK-335M](https://comparepv.com/panel/sunlink-lnsk-335m) | 335 W | Lighter, -5 yr warranty | | [Canadian Solar CS3L-365P](https://comparepv.com/panel/canadian-solar-cs3l-365p) | 365 W | +30 W, lighter, -5 yr warranty | | [Canadian Solar CS3K-325P](https://comparepv.com/panel/canadian-solar-cs3k-325p) | 325 W | Lighter, -0.3 pp, -5 yr warranty | | [Canadian Solar CS3L-360P](https://comparepv.com/panel/canadian-solar-cs3l-360p) | 360 W | +25 W, -0.4 pp, -5 yr warranty | | [SunLink LNSK-330M](https://comparepv.com/panel/sunlink-lnsk-330m) | 330 W | Lighter, -0.4 pp, -5 yr warranty | | [Canadian Solar CS3K-290PB-AG](https://comparepv.com/panel/canadian-solar-cs3k-290pb-ag) | 290 W | -45 W, -2.7 pp | | [Canadian Solar CS3K-295PB-AG](https://comparepv.com/panel/canadian-solar-cs3k-295pb-ag) | 295 W | -40 W, -2.4 pp | | [Canadian Solar CS3K-300PB-AG](https://comparepv.com/panel/canadian-solar-cs3k-300pb-ag) | 300 W | -35 W, -2.1 pp | | [Canadian Solar CS3K-305PB-AG](https://comparepv.com/panel/canadian-solar-cs3k-305pb-ag) | 305 W | -30 W, -1.8 pp | | [Canadian Solar CS3K-310MB-AG](https://comparepv.com/panel/canadian-solar-cs3k-310mb-ag) | 310 W | -25 W, -1.5 pp | | [Canadian Solar CS3K-315MB-AG](https://comparepv.com/panel/canadian-solar-cs3k-315mb-ag) | 315 W | -20 W, -1.2 pp | | [Canadian Solar CS3K-320MB-AG](https://comparepv.com/panel/canadian-solar-cs3k-320mb-ag) | 320 W | -15 W, -0.9 pp | | [Canadian Solar CS1H-320MS](https://comparepv.com/panel/canadian-solar-cs1h-320ms) | 320 W | Lighter, -0.9 pp, -5 yr warranty | | [Canadian Solar CS3K-325MB-AG](https://comparepv.com/panel/canadian-solar-cs3k-325mb-ag) | 325 W | -10 W, -0.6 pp | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | Cooler, +2.7 pp, +10 yr warranty | --- Source: https://comparepv.com/panel/canadian-solar-cs3k-335mb-ag 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.