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Rodney D.
Reviewed in the United States on March 23, 2025
It works, but not with 40v panels at 12v. I needed a portable charge controller for a big panel that is shattered but still works (i tested it). It would be a pretty convenient remote battery charger for my shipping container. I use a 20v panel and a small MPPT charge controller to keep my motorcycles, rarely used equipment, generator, spare cars and my enclosed trailer charged up. Easier than dragging a cord and ESPECIALLY no accompanying electric bill. This controller did not work for me. It can use a 40v panel, but only on 24v charging.
Thomas Kitz
Reviewed in the United States on March 11, 2025
This charge controller appears to be working well. I am using this on a smaller system for a shed and there are two panels charging a lifepo4 battery. This came with the correct wiring for my panels. I have had this up and running for about one month and have had good results. I can recommend this charge controller for smaller systems.
John S.
Reviewed in the United States on March 10, 2025
Decent little inline charge controller. Have a bit skepticism believing it's MPPT for that price and size. I have some dokio panels and the have the sae connectors like this and I have connectors that use the mc4 to extend my panels. So far no issues for the basic charging I needed to do in a pinch. As I mostly am charging my battery bank I don't really need to use it, but did want it for if I need to solar charge another battery and as it takes up little space it's fine so far
Megs- Knee Wall Reads
Reviewed in the United States on February 20, 2025
Pretty basic charge controller with a cheap feeling case. No mounting holes is unfortunate. No way to change charging voltages. Limited input, so make sure you look at the specs. Had hoped to use this for a solar powered bilge pump system but without a clean way to mount it I probably wont.
Woeful Zeus
Reviewed in the United States on February 19, 2025
I ordered this to use as a solar battery maintainer. I attached three 100W panels in parallel to this MPPT (each panel's peak amps are below 5A) and three 12.8V 100Ah LiFiPO4 batteries that are also wired in parallel.This unit works GREAT to keep my battery bank topped off when the batteries are only being lightly used.I keep this small unit attached 24/7 to my battery bank, I have been using this for several weeks with 0 issues. I love how simple this unit is and that it can be easily detached if I need to hook my battery bank up to a bigger controller.This unit is simple to use, is portable, isn't overly complicated with features that I don't need, and is inexpensive.If you are just looking to run a small system or need a small MPPT to keep your larger system topped of, this is the "Go-To" controller.Why you would want a smaller MPPT as a "maintainer" is larger units will pull more wattage during down time but a small unit like this uses hardly any extra wattage during times of low or minimal power use.
Erin Barnett
Reviewed in the United States on January 21, 2025
This thing is fantastic for micro systems. I love how much information you can get from the units display without having to wire in another monitor. If your looking to put together a bare minimum system this thing is great. I appreciate the quick connects at each end of the unit making it a snap to move to a new location especially if you have multiple low draw satellite setups, for instance we have several 12v batteries scattered around the property powering different devices and we can swap this around from battery to battery every day or so to keep them all topped off until each has it's own permanent setup and being able to quickly disconnect and reconnect somewhere else without ever having any exposed wires is nice. You should be able to wire up to two 100watt panels in series or parallel depending on the panels voltage to max out output for a 12v setup or 4 x 100watt panels an a parallel and series configuration to max out output for 24v setup, but given this unit has no active cooling capabilities I would suggest to not push this unit to its limits for any extended period. PowMr is more of a budget brand but they are decent quality products, and this stands true with this item. Build quality, ease of use and clear instructions for setup as well as clear and honest claims of the units capabilities keeping expectations in check get a serious nod from me. I've had really good luck with their products including a 5000watt 48v/110v inverter for our primary system as well as their 80A solar mppt charger going strong for over 3 years now.
BJ
Reviewed in the United States on January 1, 2025
On the bench today, I’ve got the PowMr 15A MPPT Charge Controller 12V/24V, Intelligent Portable 15A Solar Controller Regulator, Max PV 180W/360W with LCD Display Compatible with 12/24V Gel AGM Lead-Acid, Lithium LiFePO4 Battery.I’ll just start off by saying, make sure you know what you’re getting when you see the IP32 rating and don’t think for a second that it is any sort of real weather resistance worth mentioning. The 3 means it can prevent ingress of particles larger than 2.5mm. The 2 means it can withstand drops of water(no more than equivalent to 1mm of rainfall per minute) at up to a 15 degree angle from perfectly right side up. I’m not sure which part of this MPPT is considered the normal positions face up but I assume it’ll be either the solid front or back because I don’t know if the seams would stop any. Having said that, I’m not sure if the sticker over the buttons would either so maybe they’re considering the solid plastic back.TLDR: don’t expose this to any sort of moisture or dusty environments.After opening it up, it looks like it would be fairly easy to actually make it much more water resistant.Overall, the internals don’t have anything that raises any red flags to me. The soldering doesn’t look sloppy and it has a user replaceable 30A low profile mini blade fuse. It looks like there is a very thin plate on the inside of the back with a couple of thermal pads to help with heat dissipation but I don’t know how much that will actually help anything since the case is all plastic.Overall, this isn’t too bad of an option if you need a very small MPPT controller but I feel that it’s not the best value at the current $36 price with as chintzy as the plastic feels and as little voltage that it can handle from a panel. Out of the panels I have, it can only handle 1 of either a 100w or a 190w panel and stay within allowed voltage for a 12v system.
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