EPEVERMPPT Solar Charge Controller 30A 12V 24V Auto, Solar Charge Controller Max 100V Input Negative Grounded Solar Regulator, for Lead-Acid and Lithium Batteries

I own 3 EPEver Charge Controllers. A 20, 30 and 40 amp version. I've used this 30 amp version to build a portable charge controller in a box. I take it out in the field with me camping or star gazing and together with my extra solar panels I can charge up any of my batteries to prepare for the night time fun.Just like the other 2 units this thing is a solid performer. I have the 20 amp which is in my 4-Runner and has been running non-stop now for over 2 years without issue. It charges a 100AH 12v Wieze LiFiPo4 battery powering an AI Astro freezer.The 30 amp unit performed perfectly on our last trip providing supplemental charge to our camper system which has 2 12v 200AH batteries. Using this unit and 3 100watt panels which I could move around to follow the sun through the breaks in the trees we were able to keep everything charged without the need of the generator.EPEver keeps all my gear up and running. Solid unit, well built and durable. Consider it's little brother the 20amp is on the 4-runner being subjected to all the vibrations and bouncing of an off and on road vehicle.When I need more power in a small package I will always look to EPEver.

load connection not for inverter what is it good for.

I just purchased a new RV and needed to add solar charging as I had installed on my old RV.I was a little skeptical when I purchased this Solar Charge controller since I usually try to stay with US built products. I most always get better service and quality from US companies and a better warranty. After looking at the cost differences between the China built product and what I paid for my first solar controller "US product" I figured what the heck! I'll give it a try. And I gotta tell ya, I am impressed with this MPPT 30 amp charger! I roof installed the exact same two 7 year old 140 watt solar panels. I actually moved the same (3) 105 amp hour deep cycle batteries I had just purchase for the old RV about 6 months ago to the new RV.(Cheap sob's) only put 1 small deep cycle in the new RV. So I am pretty much comparing apples to apples except for new wiring with the same size 8awg wiring I had in the old rig. The only major component changed was the Solar charge controller as the old one was not designed to be located with a separate monitoring panel and I could not find an ideal location for it. Long story short this EP Ever 30 amp MPPT charge controller charges better than the old one with the same solar panels. The old controller was also and MPPT controller but the best I had ever seen was about 8.5 amps on very low batteries. I have seen as much as 12 amps charging with this new controller with the same (7 year old panels). It steps down through the charge process just as it should and if left on it maintains the batteries properly and also sleeps and wakes up properly once the sun rises just as it should. I do a ton of off grid backwoods or desert camping and as long as it holds up? I will be a happy camper watching the nightly news or a movie without firing up the genny... :-) Only suggestion is make sure you get the NEGATIVE Ground model if you are in the US...

June 2, 2020 Purchase date:Item did what it was supposed to do.Easy to install.Recommend attaching a small maintenance battery (12ah) with battery switch so the main battery bank can be disconnected for maintenance or relocation.This way the system can remain fully connected (as require) and avoids the need to disconnect solar panel wires at charge controller point.May 2021: weak and unimpressive wire terminal connecting points on unit.Problem occurred just before one year mark:One of the terminals, specifically the negative connector from the solar panels, failed.The inner screw mechanism/clamp mechanism failed.It is unknown how this occurred.Discovered when power zeroed out from panels. During a maintenance inspection the wire was observed still inside, but not fully connected to the terminal. Given the impression that it was still connected from a distance official inspection.Generally, terminal connecting points On charge controllers have not been very robust on a number of units, including this one. Renogy, had very cheap plasticky look and feel, which also failed. Returned that one got the Epever Tracer 3210 AN here.Other complaints on the solar charger connecting points having three holes are too small, and are not easily work with other wiring going down stream away from the controller.This connecting point is no different. It appears that the inner clamping mechanism failed.This is complicated even more because you cannot see this connection embedded inside of the device. So you have to blindly shove a strict end of your wire into a hole hoping that the clamp in mechanism Titans around it for you over tighten the mechanism because it past the end of the wire. Giving you false sense of security.Abetter design would be to allow the user to see the entire terminal mechanism area. Which can then be covered with a separate cover as part of the unit.This weekend is your can observe the terminal connecting point watching the small clamping force rules lol come together while connecting wire.At this point the vendor will be contacted, or the manufacturer, requesting a replacement for a proposed workaround for this problem.He posted photographs here show an improvised solution for now, using a small alligator clamps to reach inside the small holes to complete the connection while I work around or replacement is sought.if vendor or the manufacturer does not recognize this repair or replace a request. A particular workaround would be to open up the unit and solder in an extension piece of wire bring the connection and the wire outside of the box for connecting to the rest of the wiring to the system.

Been running for about a month. Works as advertised. Wired panels for 24v with 12v batteries. Charges much better than my old PWM unit. The remote cable is too short. I just replaced with a 25' CAT5 and works great. Only complaint is it is difficult to see the display on the main unit at any sort of an angle (not a big deal). MPPT gives much more flexibility than PWM. Just buy it, for the price you can't do much better.