40A MPPT Solar Charge Controller +MT50 Monitor+Temp.Sensor Package Tracer 4210AN 100V Solar Panels Power Input Support Lithium Battery Charger Regulator Negative Ground

1 1/2 years ago, I purchased this charge controller for a mobile power station, combined w/alternator charging. Several months later, while assembling all of my parts, I noticed that the 4210A is positive grounded. But, the vehicle and inverter are negative ground. Today, upon further investigation, I discovered that I was sold the wrong charge controller to begin with. Argh!!Within one day of posting the above, I received an email from a ZHCsolar representative, who offered to replace the 4210A with a new negative ground model. Happy camper! Thanks ZHCsolar!

I received the controller and installed it today. It looks very nice and appears to be made well. I bought it with the MT50 controller and it all seems to work well together. I have a total of 500W so I'll be interested to see how it works in full sun. I was getting a few amps in the shade today. My old PWM never did that. I'll come back later and update when I have some time with it, but 5 stars for now for the quality appearance, ease of setup and it worked as expected out of the box!

I got the Tracer 4210an kit back in July 2019. Everthing was perfect until today when the voltage/amps overall charging went haywire. Check all connections and did a full disconnect.I put one 100w HQST Panel on the controller and it read 160+ watts,then fall to 40w. Read 17 Amps on the same panel. I'm trying to reach Epever for help with Warranty. Will follow up soon.

I am still learning how to use this product. I will say that the ok button on the MT50 sticks and causes screens to save this gets aggravating as you are trying to go to the next screen and it thinks you want to save information 2 screens later. update. This machine only lasted 3 months. Everything was installed properly. The company can not be reached for repairs. I had to buy a second unit. This one was supplied by epic solar. They we're more helpful and responsive. Watch the sellers.

This is a good product, I've had no problems learning how to use it. The data cable was to short but a standard network cable works just fine.

I love it no problem with over heating got a fan under it so if I feel any heat I can turn it on but when I mounted it I put it out about 2 inches off the wall

Unit works out of the box and lives up to product specifications for solar panel conversion and charge controller efficiency.

Failed on 3rd day. Not worth the money.Full story:I purchased EPEVER 40A MPPT for 2S2P PV system, rated 260x4=1040W and 38x2=76V open circuit (2pairs in 2 series).Controller was programmed for User defined 28V Charge limit, 28.2V Over voltage disconnect and 28V Equalize,Boost, Float. 27.5V Over Voltage reconnect.It worked fine for 2 days and charged ~7kWh (system consumption is ~ 400W in business daytime schedule only).In the morning of 3rd day, all electrical system where shot down at opening hour 8.30AM.Inverter and batteries where in protection mode. Inverter, charge controller and MT50 monitor screen off. Battery side at 68V.After disconnecting panels from charge controller, Inverter and Batteries went on-line with 29.5V and work normally again, thanks to LiFePO4 BMS (batteries management system) and sophisticated protection on the inverter.In some way, the controller managed to overcharge the battery over 30V, where BMS shuts off the battery for OVC (over voltage protection).I contacted the seller and only mode to exchange the controller will cost me additional 80USD. (I do not live in USA).After opening up the controller I was really disappointed, most of the components are just on their specified survival limit on 24V LA battery system and 100V open circuit PV input, not suitable for system with payback terms measured in years. Definitively not even worth 80USD for replacement shipping.BTW failed components: 5V regulator for IC, 2 capacitors and at least 3 MosFets. No failure protection for output side found, which means if something happens you will see full PV array voltage on your DC/Battery side and loose all your unprotected equipment (up to 100V in certain PV configuration), which is unacceptable to me.My tip:Do not spend extra money on this controller, better spend it on additional PV panels.A cheap 50-60A 15USD PWM controller has components with same tolerances and with one additional 260W panel (to cover lower efficiency of PWM) it is still cheaper, more productive, secure and robust in 5P1S (38OCV) configuration. Panels do not brake and controller replacement only trows you back 15 bucks.