10A MPPT Solar Charge Controller, ATEM POWER 12/24 Volt Intelligent Portable Solar Panel Controller for Solar Panels, Solar Regulator with LED Indicate for Gel AGM Lead-Acid, LiFePO4, Lithium Battery

Basically plug and play. Charges my AGM lead acid starter battery successfully. I will leave it plugged in to maintain the battery.

I ought a couple, use on some 100 watt panels on my roof to keep two 100Ah battery fully charged. I use to keep my home Ham Radio systems powered 24/7, as well as my Vpap machine. Have had several power failires in this community the last few years, a great benefit to me for several things. Wish they also had a similar 20 Amp version with the 12v/24v operation modes. Nice.

I bought this to recharge my lifepo4 batteries as i was using them to power an inverter. I have been in electronics for 50 years and followed the instructions. What happened is none of the lights ever came on. I pushed the battery selection button as instructed and nothing came on. I discharged the batteries for 2 hours with high drainage and redid the MPPT controller connection process again. No light came on. The ad for this item looked wonderful and would have suited my needs perfectly and the reviews were really encouraging. I have 2 solar panels in series with a total of 36 volts output which is within specifications. Everything is good to go...but still not light. Nothing. Perhaps I caught the occasional manufacturing defect, however I cannot recommend this device.

Haven't had time to test the durability but build quality seems fine and it is a true mppt

This unit is keeping my 100ah lifepo4 battery fully charged. I like the product and it’s working great for me. I will update my review if anything changes.

Great controller for lifepo battery

First thing you’ll notice is that this is a heavy duty and durable controller. It’s solid. Comes with clear instructions. Simple to connect and control. Notes on the controller too, so you won’t forget what the different led colors mean. Three led indicators let you monitor the current and charge status of your batteries. Has settings for various batteries. I only used it for a large lithium battery and it worked flawlessly. Definitely recommended for an easy and reliable set up.

Did not work. I tested it with a meter, and it is getting about 20V from the panel but 0 output.I purchased it a couple months ago but did not install it until now, so I can't return it.