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Old 11-11-2019, 06:56 PM
jdemaris jdemaris is offline
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Originally Posted by Grizzly Guy View Post
I have decided to go with a 100 watt panel with a cheap controller, using my 1000 watt inverter to run a small icemaker.
In many cases, the cheap controllers work just as efficiently as the higher priced controllers. Sometimes, there is little difference in overall output between a PWM and a MPPT controller.

As far as inverters go - I am not sure what you are calling a "1000 watt" inverter. Some sellers do a great job at misrepresenting them. A true 1000 watt unit rated so for continuous duty ought to handle surges of 2000 to 3000 watts. Because of that, to get full potential - a true 1000 watt inverter needs to be wired to handle at least 2000 watts. Wiring a 12 volt inverter for 2000 watts can be done fine with just #2 copper cable as long as the leads are no longer then 2 feet. Same could be done with #4 copper cable if only actually running 1000 watts max. I have a 3000 watt inverter in my motorhome that can handle 6000 watts of surge and it is a 12 volt unit. That is hooked to a pair of large batteries with 2/0 cable with a 2 foot run. Voltage drop at full 6000 watts is only 1.5%. It is not just a matter of cable size. Just as much about distance.

I will warn you that the battery is often an unpredicted problem. That because so-called "12 volt" batteries used to crank over engines are designed to work well at 9 to 10 volts. Most inverters shut off at 11 volts. So with some batteries, even a moderate load causes working voltage to dip below 11 volts and the inverter trips off.
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Old 11-18-2019, 04:41 AM
jack daniel jack daniel is offline
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Quote:
Originally Posted by jdemaris View Post
In many cases, the cheap controllers work just as efficiently as the higher priced controllers. Sometimes, there is little difference in overall output between a PWM and a MPPT controller.

As far as inverters go - I am not sure what you are calling a "1000 watt" inverter. Some sellers do a great job at misrepresenting them. A true 1000 watt unit rated so for continuous duty ought to handle surges of 2000 to 3000 watts. Because of that, to get full potential - a true 1000 watt inverter needs to be wired to handle at least 2000 watts. Wiring a 12 volt inverter for 2000 watts can be done fine with just #2 copper cable as long as the leads are no longer then 2 feet. Same could be done with #4 copper cable if only actually running 1000 watts max. I have a 3000 watt inverter in my motorhome that can handle 6000 watts of surge and it is a 12 volt unit. That is hooked to a pair of large batteries with 2/0 cable with a 2 foot run. Voltage drop at full 6000 watts is only 1.5%. It is not just a matter of cable size. Just as much about distance.

I will warn you that the battery is often an unpredicted problem. That because so-called "12 volt" batteries used to crank over engines are designed to work well at 9 to 10 volts. Most inverters shut off at 11 volts. So with some batteries, even a moderate load causes working voltage to dip below 11 volts and the inverter trips off.
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Old 11-18-2019, 09:31 PM
fordtrucksforever fordtrucksforever is offline
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Originally Posted by lasers View Post
I went with Makeskyblue for my charge controller. I have only had a for a month or so so I can't say how good it is long term but so far I am impressed by it. I got the 30 amp and intend to order a 60 amp to be able to connect my other two panels. I stuck with 12 volt because it is very easy to find 12 volt items to run of the batteries(anything designed to run in a car will work on my batteries)
I would like to hear how that charge controller works out. They have been good at offering information and fast followups. Also the technician is located in Oklahoma. From the information I gave them, they recommended a 30 amp controller. My setup is using 4, 12 in series for a 48 volt bank. So I can add up to a total of about 6, 300 watt panels in series/parallel and keep under the max amps of controller. If I was running a 12 or 24 volt setup, then would need a bigger controller.

The guy that tests control chargers on Youtube had good things to say about the Makeskyblue products. They are inexpensive for an MPPT charger. Just curious if you have any problems after a year of service.
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Old 11-18-2019, 09:48 PM
lasers lasers is offline
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I'm not sure if the makeskyblue can do 48 volts. In the manual it says 12,24 or 36 volts. Later on it mentions 48 in passing but doesnt explicitly say it will work on 48 volts.

It's only been running fo a month or so so I cant say anything to its longevity. The panel is designed for a 36 volt system and I an using it for a 12 volt system. It continues charging until just before dark when the sunset is actually shining on the back of the panel. I intend to buy another one so I can hook up my other panels. My system is 12 volts so gets expensive when it comes to controllers.
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Old 11-18-2019, 10:12 PM
lasers lasers is offline
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I bought my controller directly from makeskyblue.com but I think it is a fake or a revision because there is an indicator light cut into the panel but covered by the orange sticker as well as words under the orange sticker. I dont intend to pull it apart to find out though. There are several companies that make identical products that makeskyblue claims are knock offs. Power jr, powMr. And makeworldgreen are their competitors. The interesting thing is , makeworldgreen claims they are the original and skyblue is the knock off. I assume they are all the same, made by the same factory with the same parts but given a different name.
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Old Yesterday, 09:38 PM
fordtrucksforever fordtrucksforever is offline
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Below is information relating to the control chargers that was emailed to me from Makeskyblue.



You can see it covers 12 to 48 volts.
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Old Yesterday, 09:54 PM
lasers lasers is offline
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Quote:
Originally Posted by fordtrucksforever View Post
Below is information relating to the control chargers that was emailed to me from Makeskyblue.



You can see it covers 12 to 48 volts.
Is that chart specific to the controller you are looking at? Mine is the 30 amp and from reading the information that came with it I was left questioning if it would work on 48 volts. I'll see if I can find the paperwork again and reread it and see if I can make more sense of it.


I will admit I a lot of the manual either want over my head or some of it was a direct translation from Chinese to English and doesn't make sense at all, I am not sure which though.

Also when I ordered mine I thought it had wifi but that is a different model that has it. I am not sure if the mistake was on my end or a generic description they put on all their controller that isn't specific to any one model.
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Old Today, 05:22 AM
fordtrucksforever fordtrucksforever is offline
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This is for the V118 30-60 amp control chargers sent to me from Makeskyblue. The wifi model is a V119. It should be the same as you have if purchased from the real Makesyblue online store. I see the V113 is an older model that is being sold around. It is supposed to be the fake one.
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