In this video, we cover why buying used panels is not always the best option over new solar panels. We bought 2 pallets of used Trina Solar panels, not thinking about recalled panels being re-introduced to the used solar panel market. The Trina Solar Panels we bought had been recalled for model years 2011-2014 for quality issues
Along with many other large manufacturers, Trina solar had a number of quality issues over the years. These have been mostly the result of backsheet degradation and failure leading to water ingress or PID issues. Fortunately this appears to be limited mostly to panels sold between 2011 and 2014, and related to an alternative backsheet or EVA material being used during manufacture. Recent panels do not seem to have any recorded issues, but this does not mean there will not be faults in the future. As with all large volume manufacturers, there is bound to be an occasional batch or small number of panels with issues.
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Two articles cover this well:
https://www.solarpowerworldonline.com/2020/01/solars-silent-killer-backsheets-are-shortening-project-lifespans/
https://www.cleanenergyreviews.info/blog/trina-solar-panel-battery-review (Read approximately 3/4 of the way down the page, “past quality issues”
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