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I havent finished my system yet: I'm testing with a lead acid battery that is being abused but will be upgrading to a LifePO4 battery with built in BMS. I am running an 80W thermostatically controlled fan and about 5A of automatic lighting. On a hot summer day the fan will run down the...

Relatively new to this. Installed a 400W solar system on my shed to power lights and a fan for the summer. Using the renogy rover MPPT controller with a 12V lead acid battery to manage everything. No inverter. Battery is somewhat undersized but (a) probably wouldn't solve the issue if I got a...