4w polycrystalline solar cell, multi solar wafer high efficiency

Product Description 4w polycrystalline solar cell, multi solar wafer high efficiency        Specification:   1. High efficiency, Excellent performance and High power. 2. Long-term electrical stability.
3. Lowest price and Fastest delivery.
4. Good quality and good service. 5. Bulk supply 6. Good Warranty 7. Big Sale   Physical characteristics  

Dimension	156mm X 156 mm ±0.5mm
Wafer Thickness	200um ±30um
Front(-)	Four 1.1mm wide bus bars(silver) with distance 39mm, Acid texturized surface with blue silicon nitride AR coating.
Back(+)	2.4mm wide silver/aluminum soldering pads, aluminum back surface field.

    Typical electrical characteristics  

Efficiency code		1720	1740	1760	1780	1820	1840
Efficiency (min)	(%)	17.2	17.4	17.6	17.8	18.2	18.4
Pmax	(W)	4.186	4.234	4.283	4.332	4.429	4.478
Voc	(V)	0.631	0.632	0.634	0.636	0.640	0.642
Isc	(A)	8.446	8.485	8.523	8.573	8.660	8.700
Vmp	(V)	0.525	0.527	0.529	0.531	0.535	0.537
Imp	(A)	7.973	8.035	8.097	8.160	8.280	8.340

  Data under standard testing conditions(STC): 1,000W/m2, AM1.5, 25℃, Pmax: Positive power tolerance.          Pictures                              Company Information   SOPRAY SOLAR GROUP LIMITED( SR-SOLAR brand) is a vertically integrated manufacturer of solar panel ,solar power station and solar street light . Almost 90% products are being exported to Southeast Asia, the Middle East, north and South America, parts of Europe and Africa. In order to keep our high quality and competitive advantages on the international market, we have a strict quality control system, which complies with the ISO, CE, MCS, UL, IEC and TUV international standards for every step of the production process.   Our Services   Our principle: To the same product, better price provided; To the same price, better quality provided; To the same quality, then better service provided.   Please contact us, we will guide you step-by-step about choosing the product according to your needs to deliver you the best quality product on very affordable installment rates.   Welcome to visit our factory at any time.   Skype: srsolarsales01
TradeManager: cn1000640016