Name: 620W TOPCON Bifacial Solar Panel With MBB Half-Cell Tech – Wholesale
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TOPCON 620W Bifacial Solar Panel with MBB Half-Cell for Wholesale

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Temperature Characteristics				Operating Characteristics
NMOT (Nominal Module Operating Temperature)		44°C(±2°C)		Operating Module Temperature			-40°C ~ +85°C
Temperature Coefficient of Voc		-0.250%/°C		Maximun System Voltage			DC 1500 (IEC)
Temperature Coefficient of Isc		+0.046%/°C		Maximun Series Fuse Rating			35A
Temperature Coefficient of Pmax		-0.300%/°C		Power Tolerance			0~+5W
				Bifaciality			85%±5%
*Electrical Parameters (STC)**
Module Type: SP650M-60H	620		625	630	635	640		645	650
Maximum Power (Pmax/W)	620		625	630	635	640		645	650
Module Effciency(%)	21.90		22.10	22.30	22.40	22.60		22.78	22.95
Optimum Operating Voltage (Vmp/V)	35.70		35.90	36.10	36.30	36.50		36.70	36.90
Optimum Operating Current (lmp/A)	17.37		17.41	17.46	17.50	17.54		17.58	17.62
Open Circuit Voltage (Voc/V)	42.90		43.10	43.30	43.50	43.70		43.90	44.10
Short Circuit Current (lsc/A)	18.31		18.36	18.41	18.46	18.50		18.54	18.58
BSTC*
Maximum Power (Pmax/W)	469		473	476	480	484		488	492
Optimum Operating Voltage (Vmp/V)	33.80		33.90	34.10	34.30	34.50		34.70	34.90
Optimum Operating Current (Imp/A)	13.89		13.93	13.96	13.99	14.03		14.07	14.11
Open Circuit Voltage (Voc/V)	40.60		40.80	41.00	41.20	41.40		41.60	41.80
Short Circuit Current (lsc/A)	14.77		14.81	14.85	14.89	14.03		14.97	15.01
*STC: Irradiance 1000 W/m² , cell temperature 25°C, AM=1.5. Tolerance of Pmax is within +/- 3%.
*BSTC: Front side irradiation 1000W/m² , back side reﬂection irradiation 135W/m2, AM=1.5, ambient temperature 25°C.

Q : 1. What is the advantage of bifacial solar panels? A : Bifacial panels can generate electricity from both the front and back sides, increasing total power output—especially when installed over reflective surfaces.
Q : 2. How efficient is this 620W TOPCon panel? A : It uses advanced TOPCon cell technology with high conversion efficiency (typically over 22%), delivering more energy in less space.
Q : 3. Can it work well in hot or cloudy weather? A : Yes. It has a low temperature coefficient and excellent low-light performance, ensuring stable power in various conditions.
Q : 4. Is it compatible with my current system? A : The panel uses standard connectors and dimensions, making it easy to integrate with most inverters and mounting systems.
Q : 5. How durable is this panel? A : It’s made with tough glass and strong materials, designed to resist wind, snow, and harsh environments for over 25 years.
Q : 6. What kind of warranty do you offer? A : Typically, 12-year product warranty and 30-year performance warranty. Exact terms may vary—please check with your supplier.

620W TOPCON Bifacial Solar Panel With MBB Half-Cell Tech – Wholesale