EPEVER MPPT Solar Charge Controller 40A 150V PV Solar Panel Controller Negative Ground W/ MT52 Remote Meter for LiFePO4 Battery Tracer4215BN (Li)

Knocked off a star because temperature sensor went bad in a few months. Purchased this controller in April based on reviews and came highly recommended by Will Prowse. Three months in the temperature sensor went bad. At 94° it said my battery temp was -1C (30°) and shut down my solar to protect the battery. I contacted the seller and they were quick to respond which was a plus. The problem though is that apparently they have no replacement parts. They messaged they would send a replacement temperature sensor but that it comes from the manufacturer and would take awhile. I don't know what awhile is in actual time and I'm hoping it's before cold weather but will update on seller follow through. The charge controller itself is solid and does its job well. Update New sensor arrived. We're using this controller with 400watts of solar in series and a 300amp hour battery to keep our 12 volt compressor fridge going in triple digit heat. It does the job and it does it really well. Big thank you to the seller for follow through and getting us a new sensor. Added fifth star even though there was an issue because sometimes things just happen and the seller was on the ball and made it right. Would purchase again.

This is a good MPPT charger. I can set my own battery parameters using the MT50 monitor.Other off grid folks notice the same problem I used to have with my old chargers...a lot of times my old charger would go in float and shut my solar array off and I would be running things off my battery bank during sunlight hours!!! I have a large battery bank and have set absorb to 3 hours and would have set it for more hours because my batteries can be in absorbtion or boost charge for 12 hrs. I set my float charge up to 14.5 volts. I want my batteries charging as long as the panels can gather energy and I definitely do not want to be running off batteries before it is night time. I could not figure out what my earlier chargers were doing in float but they allowed my batteries to drain a little in afternoon and then kick back into charge mode when a preset low volt level was reached in float mode. This usually occurred right about the time the sun was setting so my batteries would not be at the maximum charge and surface charge as I headed to night time. Check your settings on your charger if you are off grid and your battery bank voltage at night. It took me a summer to figure out was going on and made me mad to find the sun was shining and I was running my home off the batteries instead of the panels!!! I love all my free daytime solar power..crank my freezer up full blast and charge up all my tools, phones, computers, run tools etc. After my batteries are full all the surplus electricity is free!! This Solar Epic has a 20 amp load outlet and shows the battery being charged and the load powered by your panels. Love the Solar Epic and have extra current and panels ( not over 130 volts) hooked to it so the charger is always getting max power to it. You can have more than 40 amps going into it but do not go over 130 volts. READ THE OWNERS MANUAL! UPDATE...unit is working great!!! The tracking seems to react quickly to passing clouds etc that some reviewers had complained was slow. I may buy another unit in the future.

Excellent controller. This is now my third Tracer (sold by SolarEpic) MPPT solar controller. This is installed in my RV with 3 100w Renogy in series charging two 6v golf cart batteries in series. Another charging a 4 6v golf cart battery system wired in 24vdc. A third is charging a 12vdc system charged by 2 Renogy 100w solar panels on a solar tracker I built. This one has been charging the batteries for 3 years now without a hitch. The original batteries are still there and are still working. This controller has no fans and is built very rugged. It has been withstanding the jars and jolts of our travels with no problem. We have the output of this controller in parallel with our original RV charger so when needed we still can plug in the AC to our RV. It is absolutely quiet making no noise and produces little heat with our 300w system. The MT50 panel monitors both the input and output status of our system and is momentarily lit for night operation. As someone else mentioned in a review, the information given by the MT50 is more than I expected. One note, I am not sure I would use this controller with Li-ion batteries. It claims compatibility but Li-ion batteries require a complete off condition for the charger when the batteries reach full state. I have seen no indication in the documentation that this controller does this.

I have 4 x 100W solar panels to charge two 60Ah 12v LiFePO4 batteries connected in parallel, for my off-the-grid ham radio station. The EPEVER MPPT Solar Charge Controller, 40A + MT50 meter & remote control was fairly straight forward to install. I liked the extra large terminals that could accept AWG 6 wiring. After I got the default password (000000) entry right on the MT50 (you have to actually press the arrow button on all 6 digits to successfully enter the control parameter setup, even though the 000000 password already appears on the line) I set my user parameters for the LiFePO4 batteries; then connected the PV panels, and started charging. The MPPT really does what it says, and maximizes the charge current depending cloud/sun. Today started with heavy fog coverage, but I was still getting 6 to 9 amps charge. One really important point is that this charge controller does not produce any significant RF noise like others do on the HF bands. However I have wrapped a couple of turns of the pair of wires connecting the charge controller to the PV panels around a ferrite toroid choke ring (mix 31 from Palomar Engineers) to snuff out any RF interference from getting up to the PV panels. This charge controller looks to be well designed and made, and its MPPT software actually works. Overall I'm pleased with the way this charge controller performs and think its worth the money compared to other cheap Chinese made ones I've tried but rejected.

I have three of these. A total of 8 years of operation. They are robust and as efficient as any including a blue popular one that has "up to 98% efficiency" that in reality only occurs at one operating point and then only with 24 volt batteries and is rounded up in any event. The Epever manual provides efficiency curves for 12V and 24V battery charging. This is far more information than any other solar controller manual that I've looked at. They have more robust terminals, larger heat sinks (which never get more than slightly warm to the touch). Heavier than most but that's part of being robust. These are sold in 120 countries and are built for inhospitable environments. Yes, I'm very fussy about my solar controllers. There are ONLY two downsides to this Epever solar controller; both occur if you are using LiFePo4 "lithium" batteries. One is that you must enter your own LiFePo4 charging settings. The other is one LiFePo4 setting that is a critical one and is not identified or discussed in the otherwise extensive manual. This is the voltage the battery must drop to for the solar controller to enter its three stage charging regime each morning instead of going directly into float mode (wherein any needed charging is very slow). Since LiFePo4 batteries rest at 13.3V fully charged and don't let the voltage drop much, this setting has to be 13.4V or higher to ensure proper solar charging occurs each morning when the sun comes up. In RV use, one wants a full charge each day so as to be best prepared for inclement weather.

Doing its job!

I'd bought A40M MP T range had one of the connecting bolts strip for the wiring for the positive power. It was really poorly made so I replaced it with this one. This thing is a Beast built the last all aluminum frame. And body.No plastic heavy duty bolts plug in play outstandy eight thumbs up

I bought this to replace a ZAMP 30 amp charger. I wanted a MPPT charger for better battery health. Looked very well manufactured. Installed with 2PVs in parallel charging 4 12vdc deep cycle batts in parallel. Also has an MT50 interface. Error codes not well documented. Illustrations not fully labeled. Some sentence structure hard to understand. Not sure how to contact tech support of vendor from Amazon Store front. Contacted support at manufacturer in Bejing, China. They anwered basic questions but lanquage barrier tended to interfer with detailed tech questions. The inverter I used kept posting an error not documented. 12vdc load current switched of, as well as, posting an overload current error. Apparently my 1500 w inverter went bad. Hooked it directly to batts. It blew batt fuses. Murphy at work. The inverter worked with old setup but went south with new install. I disassembled the inverter and checked for shorts and burnt components and reassembled unit to test in circuit. There was some debris cleaned out. I will update review with outcome of test. I also removed the mtal backplate of the 4215bn. The component side of the plate had some discoloration over the heat producing components. I put some heavy dugy electrical tape over exposed terminals and solder joints thT seemed close enough to back plate, just as a precaution. The PV and batteries did recharge fine and the MT50 are great for monitoring the system. The reason I didn't give it many stars was I don't like poor documentation on this type of equipment and don't like to spent alot of time finding tech support contact information. I want to talk to vendor or manufacture's techs without dialing a bunch of "help desk" ISO9001 checkoff chart readers.