60A MPPT Solar Charge Controller, 12V/24V Auto Tracking Solar Panel Regulator with LCD Display Dual USB Port Multiple Load Control Modes Timer Setting, Fit for Gel Sealed Flooded and Li Battery(Green)

For the cost these seem to do well. I've bought 4 so far

This is no high end MTTP. It comes with no bells and whistles. However, I like it because it is so simple. I hooked it up to a battery and it does the job. This is perfect for a small application like supplying lights to a small shed that is leak proof. My use has been to test batteries with it. I put in two leads, hook up to + and - and I get a nice reading. My plan is to mount it on a piece of plywood, hook leads up to a battery, then hook up lights. This gives a nice voltage reading. For the money this is more than worth it. Sure beats a permanent connection of my volt meter. Hooking up a solar panel or two is very very simple because it has a single standard 5.?? lead input. I ordered a lead with + and - connections to my solar panel.I have no idea how top-of-the-line the parts are, but for the price I don't need to know.

I bought this as a replacement for a charge controller that broke because I moved the solar cell and the wire became loose. I tried to tighten the screw holding it in the. Controller but it stripped. The screw slots are made of very thin metal and strip easily. The controller works great, it's just the connection slots that are of poor quality.

If you are experimenting with solar power this might be ok. If you need this to do real work you probably need to get a better unit. I have this unit hooked up to a 100 watt panel and a lipo battery. It dose not charge the battery up to the full voltage of 14.5 like it is suppose to and the "adjustable" charging voltage dose not work. It resets to 12v automatically. There are NO usable instructions with this unit. The paper that comes with it shows some pictures and English writing but the unit dose not do what the paperwork says in any way. The unit is rated for 30 amps but it turns most of the solar power in to heat instead of usable charging power. I get about 2 amps at 12v out of the controller to the battery from charge controller while the 100 watt panel is making about 6 amps at 14 volts. The controller gets really hot in operation and has terrible efficiency while making a lot of electrical noise. I ordered a charge controller from DIYsolarforu.com and it produces about 3 times the charging current at the correct voltage with the same solar panel. If you are serious about working with solar power get a better charge controller from a reputable company and you will see much better results.

Nothing fancy. Simple, nice features and very affordable. Works great for me.

I like the versatility of battery types and flexibility of solar input offered by this controller, it's nice that it has USB outputs as well. The terminal strip has a definite "project" air about it, but I'm OK with that. The additional option of connecting panels via 5.5mm plug, and some load via 5.5mm plug as well, is nice, though those are not very high power rated plugs, so should be used only for low load items.I'm a bit disappointed with the throughput efficiency; with two "100W" (in quotes because they're not really, they tested at 75W each) panels connected, the peak power throughput I could get with this controller was 90W (13.6v at 6.6a). That's with two separately-tested 75W-each panels, parallelled for 150W of total input, on a scorching cloudless 100+ degree day, at 5k feet elevation, without a cloud to be seen, between noon and 1pm, panels on a flat vehicle roof pointed right at the sun. Net, roughly 60% efficient.So this does get a positive review in that it works, it will charge a battery, and will support a load, but if you're planning on extended use, sharpen up that pencil, crank some math, and assume this charge controller will siphon off roughly 40% of your available solar input somewhere, not to be usable by you.

Like the color of the unit. It looks to have all the bells and whistles on it. Will work good for my small stand-alone system. Looks well-made and don't see any issues with it.

This machine works great for when there's no power and the display is great.