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.
First off thank you for the video, I am trying to make mobile solar charging set up for my Ebike. This is the charge controller I would like to use to charge the 48v batteries directly. I see there is multiple models 200-400w, forgive my ignorance but how do I know witch one I should buy? I am using a 200w panel.
I bought the 400w version and use it with a 200w solar panel. You could use the 200w version with a 200w panel, and possibly it would be a little more efficient since these boost converters tend to get maximum efficiency at higher output and that would be close to the maximum for the 200w model. But I doubt it will be a big difference and it's even possible that the guts of the 200w and 400w models are identical.
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.
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.
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 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.
I have both. I'd have to say the MPT-7210A works better because the ELEJOY doesn't work at all right out of the box.....I contacted the company but of course it's in China so let's see if they actually honour the warranty. I've tried it with 2 different solar panels and a charging brick and it just doesn't work. You set the voltage and hit "ok" and after a second or two it just keeps flashing "0" without any output at all. I rechecked all the connections and they are fine. When I connect 24 volts to it, it outputs 25.5v and does nothing.
I figured out why: Ok I think I know what the problem is. When I connect the unit to the battery, I'm using just the standard charging port on my ebike. I used a multi meter to measure the voltage of the charging port and it measures 2.6v. The reason for this is for safety. The BMS will not pump out whatever the battery voltage is as it would be pretty dangerous to plug in a charger into a port that has 48+ volts coming out of the port. The problem is this charger is not pumping enough volts out at idle to start the charging process of the battery. So this charger is basically not compatible with my ebike batteries which is a shame. The only work around is to connect the charger directly to the output terminals which is dangerous and usually there is a diode to prevent this so that the charger unit can read the battery voltage and start the charging process. Most ebike battery BMS's have multiple safeties to prevent people just directly accessing the battery, this defeats this charger unit. If you want to see if this charger unit is compatible with your ebike CAREFULLY measure the voltage of the charging port when it is on. In my case it's a 5.5x2.1mm so the outer ring is negative and the inner pole is positive. If it is not showing current battery voltage then the unit will not work. Use the MPT-7210 instead as it tries to ramp up to set voltage first then starts putting charge into the battery. This unit at idle doesn't have enough voltage to start the charging process at idle on some ebike batteries as the charging port doesn't have access to the internal voltage of the battery unit until the BMS starts the charging process. So unless you can directly attach this unit to the battery it will not work.
Interesting. I am directly charging the EGO batteries so didn't encounter this issue, although the EGO has a BMS the +/- terminals are always "hot." Thanks for the comment!
@@maddmikemu I finally got a message from the company. There is a way to do it for e-bike batteries which have a safety feature which only pulls from the charging port if the voltage is correct. What you do is hit the "enter" button five times until it says "Ope" which is open voltage. Then you can set the voltage and charge the e-bike. I did a whole video on it if you click my name. Would have been nice if it was in the "manual" ie the paper it came with. Fortunately once it's set you don't have to set it again.
@@maddmikemu No worries. It has 2 modes, the default is active or "Act" where it takes a reading off the battery voltage and "Ope" where it pumps out the target voltage without taking a reading off the battery.
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.
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
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.
First off thank you for the video, I am trying to make mobile solar charging set up for my Ebike. This is the charge controller I would like to use to charge the 48v batteries directly. I see there is multiple models 200-400w, forgive my ignorance but how do I know witch one I should buy? I am using a 200w panel.
I bought the 400w version and use it with a 200w solar panel. You could use the 200w version with a 200w panel, and possibly it would be a little more efficient since these boost converters tend to get maximum efficiency at higher output and that would be close to the maximum for the 200w model. But I doubt it will be a big difference and it's even possible that the guts of the 200w and 400w models are identical.
@@maddmikemu Thank you for the reply, I am determined that my bikepacking trips in the future will allow me to be more mobile with better charging.
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.
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.
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 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 have both. I'd have to say the MPT-7210A works better because the ELEJOY doesn't work at all right out of the box.....I contacted the company but of course it's in China so let's see if they actually honour the warranty. I've tried it with 2 different solar panels and a charging brick and it just doesn't work. You set the voltage and hit "ok" and after a second or two it just keeps flashing "0" without any output at all. I rechecked all the connections and they are fine. When I connect 24 volts to it, it outputs 25.5v and does nothing.
I figured out why:
Ok I think I know what the problem is. When I connect the unit to the battery, I'm using just the standard charging port on my ebike. I used a multi meter to measure the voltage of the charging port and it measures 2.6v. The reason for this is for safety. The BMS will not pump out whatever the battery voltage is as it would be pretty dangerous to plug in a charger into a port that has 48+ volts coming out of the port. The problem is this charger is not pumping enough volts out at idle to start the charging process of the battery. So this charger is basically not compatible with my ebike batteries which is a shame. The only work around is to connect the charger directly to the output terminals which is dangerous and usually there is a diode to prevent this so that the charger unit can read the battery voltage and start the charging process. Most ebike battery BMS's have multiple safeties to prevent people just directly accessing the battery, this defeats this charger unit. If you want to see if this charger unit is compatible with your ebike CAREFULLY measure the voltage of the charging port when it is on. In my case it's a 5.5x2.1mm so the outer ring is negative and the inner pole is positive. If it is not showing current battery voltage then the unit will not work. Use the MPT-7210 instead as it tries to ramp up to set voltage first then starts putting charge into the battery. This unit at idle doesn't have enough voltage to start the charging process at idle on some ebike batteries as the charging port doesn't have access to the internal voltage of the battery unit until the BMS starts the charging process. So unless you can directly attach this unit to the battery it will not work.
Interesting. I am directly charging the EGO batteries so didn't encounter this issue, although the EGO has a BMS the +/- terminals are always "hot." Thanks for the comment!
@@maddmikemu I finally got a message from the company. There is a way to do it for e-bike batteries which have a safety feature which only pulls from the charging port if the voltage is correct. What you do is hit the "enter" button five times until it says "Ope" which is open voltage. Then you can set the voltage and charge the e-bike. I did a whole video on it if you click my name. Would have been nice if it was in the "manual" ie the paper it came with. Fortunately once it's set you don't have to set it again.
@chrissinclair8705 this is great to know! Who knows what I'll charge with it in the future. I'll take a look at your channel, thanks.
@@maddmikemu No worries. It has 2 modes, the default is active or "Act" where it takes a reading off the battery voltage and "Ope" where it pumps out the target voltage without taking a reading off the battery.
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