SUNYIMA 30A MPPT Solar Charge Controller with LCD Display Dual USB Multiple Load Control Modes,New Mppt Technical Maximum Charging Current (30A)

A better quality than cheaper versions. The buttons are positive feel, making the programming easier. Keeping my sheep fencing working well, with no change of battery even in the dullest weather.

Replaced a really cheap unit, which had too high a charge voltage and destroyed the AGM battery. This works well, and I can adjust the resting voltage to battery-maker's recommended.

Works as it should at the moment still finding my way around the settings, but everything seems to be working ok, getting charge to Lifepo4 battery, in the winter Sun, but come summer it should be much better, following the instructions manual provided you will be up & running in no time 😁

SO i bought this to charge my LifePo4 battery in my van and little boat. At the time controllers, especially MMPT ones were a lot more expensive. However after nearly 2 years, I htink people need too understand a few things about my experience with this controller.FIrstly the controller is cheap. You can buy these on Alibaba for like £12 now and they are basically a cheap product when compared to Vitron and better makes it is clear.The biggest issue I have had is the lack of "Floating" and "Bulk" charging options. There is only 1 option for "Charging voltage". On any battery you need specific "bulk" charging, which is 14.6 ish on a LifePO4 battery and then the controller needs to know when the battery is full so it can switch to "flaot" charging, which should be about 13.4 to 13.6V. This is important for the longevity of the battery otherwise you will be overcharghing it. On a van or boat with constant solar feeds, this could actually be dangerous.SO i have playted and tweaked with the settings and this unit never switches up or down. After testing myself extensively now, I would also say that the "MMPT" is barely working. It is definitely not working like an MMPT system should. The voltages/amps are barely changing.I would lastly say that my camper battery was leaking charge quickly and it was found to be this controller that was the culprit. I have no idea why but I disconnected it and the battery held charge normally.I think you definitely get what you pay for in this case. NOw that the quality models are cheaper I think its not worth it and i'm going to get a better controller.

Very nice bit of kitSo far so goodWe'll see how long it well lasts?

Sunyima - SCC MPPT, Save your time and money with this one! The device says it supports remote management, which is true, but only if you're in China.The product ships with little useful information and if you need to modify any of the presets, you'll need to delve into the Internet and dig around.

Easy to connect to solar panel and battery. Working perfectly. Hopefully will continue to do so.

I can get this unit to display the voltage of my batteries, but for some reason no matter what I do I can’t get them to charge via my solar panel!Instruction are in broken English and unclear too.