360w chipped b grade sun power solar panels vs 340w A grade ones. Price is same
rollandelliott
Solar Expert Posts: 834 ✭✭
suntan solar, reputable company, is offering 340w a grade OR 360W b grade solar panels for same price of $110 no warranty made by sunpower. These are commercial solar panels with 6 rows of cells wired so each row is separate. So a chipped cell would only lower output in that specific row I think. company sent me sample photo of what a chipped cell might look like (just example, not actual panel)
I am leaning toward the B grade 360w cells unless someone suggests otherwise. San Tan claims no drop in power output, but they really dont' back up the panels with a warranty either.
I am leaning toward the B grade 360w cells unless someone suggests otherwise. San Tan claims no drop in power output, but they really dont' back up the panels with a warranty either.
Comments
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Chipped cells as you show, develop micro cracks along the edge and those invisibly spread into the body of the cell over time, causing degradation. Think of it as a 5 year panel.
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well it would only save $220 going with the B grade panels, so I'm getting the A grade, thanks.
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rollandelliott said:well it would only save $220 going with the B grade panels, so I'm getting the A grade, thanks.1500W, 6× Schutten 250W Poly panels , Schneider MPPT 60 150 CC, Schneider SW 2524 inverter, 400Ah LFP 24V nominal battery with Battery Bodyguard BMS
Second system 1890W 3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah LFP 24V nominal battery with Daly BMS, used for water pumping and day time air conditioning.
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