Flexzion Solar Charger Controller 20A MPPT Tracer - Solar Panel Battery Regulator Tracer 2210A 12V 24V Smart Overloading, Short-circuit Safe Protection, LCD Display
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- Advanced Maximum Power Point Tracking (MPPT) technology, with efficiency no less than 99.5%, maximum conversion efficiency of 98%, the MPPT control algorithm can fast and accurately track out the best maximum power point (MPP) of photovoltaic array in order to obtain maximum solar energy in time, which remarkably improves energy efficiency
- 20 amp 12V/24VDC automatically identifying system voltage recognition; load control modes including manual control, light ON/OFF, light On+Timer and time control
- Full-Scale Safety Measures: Over charging, load overload/short circuit, short circuit, battery reverse polarity protection and controller overheating protection to ensure complete protection for you and your system
- With RS-485 communication bus interface and Modbus communication protocol, it is available to meet various communication requirements in different situations
- Features an LCD screen for displaying system operation information and data, allows for full control of parameter settings, and available for PC monitoring and external display realizing real-time data checking and parameters setting
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|Item Dimensions||7 x 10 x 3 in||5.91 x 9.84 x 6.3 in||1.73 x 6.77 x 5.47 in||8.27 x 5.94 x 2.34 in||2.5 x 11.91 x 7.19 in||5.5 x 6.8 x 1.7 in|
Solar Charge Controllers are positioned between the solar panel and the battery. They control or regulate the power that is given to the battery. Amongst all of the functions, they perform its main value to stop overcharging and ensure the battery is charged efficiently.|MPPT circuit solar charge controllers are considerably more elaborate than standard PWM solar power controllers. The voltage of the solar panel changes with time of day and temperature. The optimum voltage for battery charging changes as the state of charge of the battery changes. The MPPT photovoltaic charge controller matches these voltages and can result in 30% more efficient transfer of power. This means that quality MPPT solar charge controller can reduce the number of solar panels needed by up to 30%, a tremendous benefit. While only a small part of system price, an MPPT solar panel charge controller can leverage the rest of the system to better performance.
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I will update tomorrow after the sun is shining - I installed this in the evening. A 150w solar panel is connected to this and there are 4 sealed batteries attached - this is really meant to maintain the batteries rather than charge for regular use. I will attach a DC motion sensor 12v light to it tomorrow and see how it works.
From a 150w panel I get in the range of 24 - 56 w. I suppose it's because I don't have enough of a load on to deplete the batteries. I bought the external temperature sensor and pc usb cable. The temperature sensor seems to work, and at first I couldn't get the pc usb cable to work with the Epever software downloaded from their site. However, I had a try again today, and discovered that contrary to the website's instructions, you have to check RS 485 in the PC's Device Manager settings, and change baud rate to 115000. Then to test I went into the software (not the most responsive) and made it read the device info and it did. The charge controller seems to have pre-set values which you can have the software read from the device. It's actually easier to set the parameters on the meter itself than to try with the software. One thing though, the software shows State of Charge (SOC) and is showing mine as 28% but the voltage shown is actually around the 70%+ range so I wonder if they really mean depth of discharge? I have some DC LED bulbs installed on the load and have it set to run for 6 hours, so I will see if it works. The device runs cool so far, but I have a little PC USB fan in case it doesn't.
The other peculiarity is that I have four sealed deep cycle batteries - two 12v 100 AH batteries, and two 12v 70 AH batteries connected in parallel (shouldn't have different AHs together but I need to keep the batteries charged). According to the manual, sealed batteries are supposed to get a max charge of 16v but I've never seen these batteries reach anywhere near those values.