Review on 🔆 EPEVER MPPT Solar Charge Controller 40A - High Efficiency PV Solar Panel Controller with Remote Meter and Temperature Sensor by Scott Tompkins

You should know in advance that this device does not contain any controls. Setting battery charging parameters requires either an MT-50 meter or a program (which you can download). You should also be aware that you need the right MT-50 meter as there are two versions, one for this device and one for the Renogy controller (this controller is the same model as the Renogy but there are a few Changes that require more expensive counters, so this version of Solar Epic will save you money). If you wish to use the software, you must order a cable with a USB connector on one end and an Ethernet connector on the other end. This is not the cable that comes with the MT-50 meter. You can also order a temperature sensor cable so that when the temperature rises, the controller reduces the charging voltage to protect the batteries from overheating. The controller automatically detects the battery voltage, but you still need to set the battery type (sealed, flooded, gel) and the capacity in amp hours. The settings are pre-programmed for different battery types so you can get started right away, but you can fine-tune the settings for your specific batteries per the manufacturer's specifications. Here's how to do it. You don't change any settings (because it's pretty vague in the manual): Go to the control options - you have 4 options. Sealed, Gel, Flooded and Custom. If you want to use pre-programmed settings, choose Leakproof, Gel, or Soaked. These settings cannot be changed, except for equalization and gain times. If you want to change the settings, select User. Then check the pages to make your own adjustments. I had to lower the charge voltage limit and disable balancing for my special sealed batteries. You usually don't want to use sealed battery equalization as that can result in gas leaking out and you can't put water back in because it's sealed (well actually there's a tiny pressure relief valve for safety so it's not completely sealed , but you can imagine that.) To set the clock: Go to device options. On the second page you can set the backlight time and the clock. identical control unit. The manual lists the maximum panel wattage it can handle, which depends on your battery voltage. Running two of these in parallel can be handy for using panels with different wattages in your system. In short, you can't just add a bunch of different panels and expect them all to perform at their best. If you connect a high wattage panel and a low wattage panel, the bottom panel will pull the top panel down to its level, so you're wasting your money on a higher wattage panel. - When connecting panels in parallel, the voltage of each must match (or be within about 3% of each other). The output voltage remains the same, but the current in each panel is summed to give the total output power. (P = E x I.) - If you put them in series the current in each should match, but the voltage in each panel adds up to your total power. - If neither voltage nor current match THEN you can use a second charge controller in parallel, each with its own set of panels. I currently have four 12 volt 160 watt panels. If I ever want to add powerful (200-350W) network panels I'll have to buy a second controller for them as they don't work well with my current panels.