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Second solar panel

A project log for Mini solar with AC backup & monitoring

A petite solar installation to achieve grid independence for a segment of your dwelling. Last log about a voltage hysteresis on Nov 7th '23.

guidoGuido 11/04/2023 at 21:150 Comments

After adding a second solar panel 😎 (170W, just like the first), I observed that when connected in parallel, the total power generated, as measured by the EPEVER 1210AN, was approximately 130W. This was the same as the power generated by a single panel under similar lighting conditions.

Initially, I ruled out a malfunctioning panel and turned my attention to the MPPT battery charger, the EPEVER 1210AN. To my surprise, I discovered that its maximum power input from the panels for battery charging was limited to 130W 😂😂😂.

To address this limitation, I purchased and installed a larger model, the EPEVER 3210AN, which can handle a maximum power of 390W 😀. I'm eagerly awaiting tomorrow morning (if not raining ⛈) to see the results!

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