Review on SUNYIMA 60A MPPT Solar Charge Controller - LCD Display, Dual USB, Multiple Load Control Modes - New Mppt Technology, Max Charging Current 60A by Brent Gurney

1/10/2021 - I bought this and RICH SOLAR 30w 12v monocrystalline PV solar panel ( https://www.amazon.com/gp/product/ B07FN84C9K/) to obtain a charged 12V 7Ah battery and supply power from either of the two USB ports to a Wyze V3 camera to operate, which is mounted in a tree outside the bird feeder; Here's how to make a homemade solar powered bird watching system. My initial system requirements calculations include the following known parameters: The Wyze V3 camera consumes 1,575 watts of power when the camera's Night Vision IR LED and Power LED are off. The MPPT solar charge controller draws 15mA of current in standby mode when connected to a 12V battery with no external loads. The total power consumed by the camera and controller is 1,755 watts. Based on these measurements, the battery consumes just over 42 watt-hours of electricity every 24 hours. . Assuming a new battery is used, there's a total of 84 watt-hours of power available, giving the camera a best two-day run on a single charge from the solar panel. An average of 50 watt hours per day is likely to be required from the solar panel to keep the battery charged due to losses in the battery chemistry during charging and losses in the 50ft 12AWG cable (https://www.amazon.com /gp /product/B077Z28343/) from the solar panel and losses in the SUNYIMA 30A MPPT solar charge controller. This implies the need for an average of at least 1.66 hours of sunlight per day. Since the sun at my solar panel location is probably only visible for 2 hours a day in direct sunlight and possibly another 2 hours a day in partial sunlight due to tree shade, I'm hoping the battery will hold its charge. I noticed SUNYIMA 30A. The MPPT solar charge controller's voltage reading was about two-tenths of a volt higher than what my expensive Fluke battery meter read, but that's better than 2% accuracy. I'll update this review after my system has been up and running for a while. different conditions of solar energy output and time in the environment. UPDATE After two days of operation: We had two days of steady rain and no direct sunlight and the battery voltage dropped to 11.5V, which is still enough to run the Wyze V3. Camera since it was installed two days ago. Hopefully the sun will shine again tomorrow and the battery voltage will rise to 13V again. The good thing is that even with rain and no sun, enough light comes through the overcast rainy sky to raise the battery voltage by about 0.2V during the day and power camera . UPDATE on the third day of operation: Well, two days after heavy rain with no sunlight, the battery voltage dropped below the default threshold of 10.8V programmed in the SUNYIMA 30A MPPT solar charge controller and the camera stopped receiving power. The sun came out today with no cloud cover and around 11:34 am the battery voltage reached the factory programmed 12.6V and power was restored to the camera's USB port. Early in the morning the panel was shaded by the trees to the east, which is why it took so long for the voltage to rise from the cutoff value of 10.8v to the recovery value of 12.6v record the voltage values and weather conditions displayed by the charge controller. So far the charge controller does what it is advertised for! Update 01/16/2021 – Excel table image updated.