38 of 40 people found the following review helpful
Mohoo 20 amp,
This review is from: Mohoo 20A 12V 24V Auto Switch LCD Intelligent Solar Panel Battery Regulator Charge Controller Overload Protection Temperature CompensationInstalled this 20 amp controller on an RV with a 100 watt panel on the roof and two 6-volt high capacity batteries in series (for 12 volts). I was using a very basic "yellow light on, charging - green light on, full" controller, but it was barely big enough to handle the 100 watt panel. It came with a 50 watt panel that I replaced when it died. The controller would overheat and shut down for a minute or two when the panel was in full sun, then come back on for a few minutes. I figured I was wasting charging time and looked in to a replacement that was rated for higher capacity. The 20 amp seemed like a good size since I could easily add another 100 watt panel later if I decide to.
I really like the digital readout on the unit. Easy to see exactly what's going on. It is compact, and mounted easily. Very easy to hook up. I have nothing wired to the "load" outlet terminals, but have used the USB outlets to charge phones, and they work perfectly. Nice looking... Read more
11 of 11 people found the following review helpful
Perfect for small applications like portable generators...,
This review is from: Mohoo 20A 12V 24V Auto Switch LCD Intelligent Solar Panel Battery Regulator Charge Controller Overload Protection Temperature Compensation
Great little controller with excellent feedback on crucial data. I use these with small 50 watt and 100 watt panels for portable solar generator builds, small charging stations, small RV applications, etc. The only improvement I would make is slightly larger connection points allowing for better connectors, but I simply solder the wires into a split 'V' to limit fraying and wrap around the connection screw. The USB and extra 12V ports are a huge plus for my applications. If you're adding more than a couple panels, I would go with something rated for higher amps, but for uses they are perfect. They seem to recognize the difference between AGM and GEL style batteries as well...but I'm only basing that on the 'float charge' patterns and cutoff levels.
22 of 24 people found the following review helpful
If you are starting small and want a good quality PWM controller this one should serve you well.,
This review is from: Mohoo 20A 12V 24V Auto Switch LCD Intelligent Solar Panel Battery Regulator Charge Controller Overload Protection Temperature CompensationReally deliberated for weeks about choosing PWM or MPPT and decided to go with a high end well reviewed PWM controller that leaves room for growth. This unit had a nice built in display that tells me what's going on with the panels, the battery, and the draw on the load circuit. I can add devices and watch the changes in draw real time. ( This is being written a few days after installing.) It was more compact than I thought but appears well built. Not much room between the wire terminals so I soldered some solid wire pieces onto the stranded 10 gauge ends that would not fit inside. This has worked well but would recommended keeping bare wire to a minimum. I mounted it to my basement office wall where the cable comes in (20 feet from the panel.) and used faucet washers as spacers so the back would not be flush with the wall. So far it is not getting hot. With one 100 Watt Polycrystalline panel the unit is pushing out up to 5.5 amps in full sun which clears a tree around noon and takes... Read more