Solar MPPT Boost Charger Showdown: MPT-7210A vs. elejoy EL-MU400SP
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- Опубликовано: 20 апр 2023
- Real world back to back comparison of the Hwaung Junce MPT-7210A and elejoy EL-MU400SP Solar MPPT Boost Chargers while charging EGO 58v 5ah lawn tool battery in variable overcast sun in Denver Colorado at 4:20pm on 4/20/2023.
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Thank you for the comparison video
I compared the two models and purchased the elejoy EL-MU400SP.
I chose it because it is quiet because there is no fan and it is completely waterproof.
I chose it because I plan to keep installing it outside. 😁😁
I have now tested both of these on my solar powered golf cart and can say with certainty the Elejoy just works better so far.... It pulls in my amps of power and it is far less effected by passing clouds or birds.. The green controller would reset to 0 and take time to build up current with every cloud or momentary obstruction. and I did setup the correct panel voltage. I charged my 51v lifepo4 battery with over 7 amps the other day off my 355w roof panel and it wasnt even a clear sun day.
thats a real test, to have the solar panel moving and therefore sometimes shaded. Even if you have fixed panels on a roof you don't want to be going to zero half the day because an animal is walking around up there.
I just got back from my first camping trip using the Elejoy MPPT and Allpowers panel to charge EGO tool batteries for tent power and they worked wonderfully. I set the Elejoy to 58.8v full charge voltage and it charged it to that voltage without going over and decreased current as it reached full.
The panels only gained 2% power when I cleaned off the dust, so good performance when dirty and also when partially shaded.
I use the ELEJOY MPPT boost controller to charge my 67.2V Sur Ron ebike battery direct. It works very, very well..but for safety set your output volts one or two volts lower so you charge to 80 % or so. I built a ebike charging station on my channel.
If your solar panel max output current isn't too high for the battery being charged (once it has been boosted) it seems to work correctly and ramps down current as the voltage set point is approached. It looks like this charger only does the constant voltage phase of charging, limited by the solar panel current output during the typical constant current phase of charging.
@@maddmikemu yes it doesn't balance the cells at the end, so I only charge to 80% to 90% for my Sur Ron battery longevity and once a month use the OEM charger on the grid to balance the cells correctly.
That's kinda useless any BMS will cut voltage when it's full.
Adam Welch, a ytuber and engineer about 5 years ago, reviewed the green controller you are using in the test and concluded it was not true MPPT since you have to set the max power point voltage of panels into the controller. Seems co has not changed design. Another boost MPPT controller he tested was true MPPT.
I had full sun at mid day today to test and was able to get just over 8 amps output from the panel at 19v so that works out to 152w. The sun intensity was right at 1000w per m² so the panel should have been capable of full rated power during the test. I don't think my test output was limited by anything but the panel so at this point I conclude that my panel cannot generate its rated power.
This is consistent with my testing. I tried an EPEver Tracer 2210 MPPT controller and the Elejoy on a newer "200W" folding panel like yours, also made by Allpowers. The best i ever got was 180W in scorching full sun with a light gust of wind. So yeah, they do not deliver the rated power, but still more than other "200W" rated panels i had tested. And for the price the Output of 180W is still very reasonable. Both controllers performed very well and provided about the same power output under similar conditions. I need both because the Elejoy can not charge 12V batteries(there is also a step down version available though) and the EPEver can not boost charge 24V, 36V or 48V batteries from a 20V panel.
I only checked that the elejoy EL-MU400SP turned on for a moment.
Is it possible to adjust the output amperage? Is there no such function?
The MPT-7210A model seems to be able to adjust the output amperage.
No adjustment for current. In my application the max current is limited by the 200w solar panel and is always less than the max charging rate of my battery. The output current does drop as the battery reaches the voltage setting.
I'm about to go camping for 6 days and will be using this to charge my EGO batteries for tent and Onewheel power.
@@maddmikemu Ah, thank you for your reply. Have a nice camping!😁😁😆
I wish I could find one that utilises 600w (12v) solar panels . liking the elejoy . Thank you
You can overpanel it and get the maximum 400W more of the time the sun is shining. For example on my channel I charge my Bluetti AC200 Max Solar Generator with the maximum 900W PV Input basically from 0900 to 1600 every day using 1.2KW of panels (3×400W in series). So as soon as the sun is up I am harvesting photons at maximum rate of the onboard MPPT.
There is elejoy 600w
Out in the market now
You could use two in parallel. There are other products on the market that handle 800W, but they are, as far as my research goes more expensive and less compact than two of those
Green one is trash