[Upgraded] 30A Solar Charge Controller, Black Solar Panel Battery Intelligent Regulator with Dual USB Port 12V/24V PWM Auto Paremeter Adjustable LCD Display (30a)

5 stars! It does the job for the rock bottom price of $10. Be amazed!Ok, here is reality. I have used this unit for 7 months to experiment with a 100W system.It regulates the charging of my very nice no maintenance lead acid batteries. It knows how to do this and most of the time it also knows that I am setup in 12v mode.1. Do not use the 12v extension or the 5v USB connections. They really are not functional for any reasonable current output. The board will stress, a resistor heats up on the board and the LCD will blink out temporarily.I have not fried the board but I would advise connecting all power draw, USB or otherwise through a fuse block directly from your batteries.Sometimes the controller decides for no good reason that you are in 24 volt mode. This isn't good because it seems to happen when my battery is almost fully charged over 13V. That means it will try to overdrive well over 14V and possibly 6 or more amps into a full battery. This is no good.If you catch this your first easy sign is the battery charge picture will say barely charged... Disconnect the solar, then the battery... Wait 15 seconds then plug the battery back in... Carefully connect your solar panel. Pray it stays in 12V modeAt the moment I unplug the solar panel when the battery is mostly charged and the system decides that it's 24V. I am only using this as a test bed drawing small energy for 5V USB networks at the moment.When I get serious and add more power and a proper converter I will pay good money for a real controller.So, great for the low price of $10 , great learning tool but pay real money if you want a reliable system you can count on.

Installed a small solar panel on my greenhouse, this was easy to install and worked on the solar panel to charge the 12v battery for lights and water pump to spray the plants and fill pots, now I don't have to run a water hose from the main house to the greenhouse every time I need to water the plants.

I personally depend very heavily on reviews that are posted on Amazon, as do many other consumers. I not only read what reviewers say, but look to see what their pictures reveal about a products true quality and description. I aim to not only feature the products I review in many different aspects, analyzing many qualities, I also provide my own opinions on ALL the good AND bad experiences I have with the product I review. I take time to learn and use a product as it was intended before I review it, and I have used this specific product thoroughly.My rating system:5 - Met all my expectations. Was described and pictured perfectly. Exactly what I wanted and needed. Extremely useful product and a great value. Would recommend to family and friends.4 - Very good product. Exactly as described. May have a minor flaw, mentioned in the review, that does not detract from the products perceived value. Would recommend to family and friends.3 - Average product. Not exactly as described, or misleading advertising or product pictures. Possibly substandard build quality, or something else explained in the review. Would mention as an option to family and friends, but not recommend.2 - Wouldn't recommend this product. Poor build quality, not close to being as described. Flimsy and fragile. Difficult to use due to product flaws.1 - Do not purchase whatsoever. Usually only given if product lasts only a few hours/days/etc. I do not leave 1 star reviews without contacting the seller. I will be returning the product.I did NOT receive ANY discount for this product. I simply enjoy reviewing every one of my purchases.

Super easy to use and very handy. Installed on panel for our chicken coop and works great!

I bought this item for use on a small boat with 2x 100 watt panels in parallel. On a great day I get about 12amps, so usually much less. The RENOGY panels came with a 20 amp RENOGY charge controller that was damaged by a faulty voltage regulator on my alternator. I thought buying a 30amp regulator would mean longevity since I would be barely using 50% of it's capacity. I also fused the circuit to the battery at 20amps, so 66% capacity.The charge controller failed internally. Being in a remote location on a boat, I chose to disassemble to attempt a component fix. The MOSFET transistors are NOT thermally bonded to a heat sink. The transistor simply over heated and died a smokey death. The MOSFET for the load circuit is the same as the battery circuit, and I don't use the load circuit. Even after moving the MOSFET over, it would still not turn on - so I would assume some other component died as well. The back cover is aluminum, so manually bonding the MOSFETs could likely make this unit last longer.The controller would not keep a precise float voltage, causing havoc with my charge warning system for the alternator. With very bright sun, it would over-run the float voltage sporadically.

Great price, arrived fast and works great.

Works ok but setup is hard to understand when programing for different battery styles or setting the auxiliary light output to come on/off at a set time. Probably best used for small off grid projects like a pond pump/light etc. I would not rely on this to run an RV or other larger system.

Works very well. No problem!