I used 42 cells and made one panel, the panel voltage is about 22 volts , when i connect the system with the controller to charge the battery the system works OK , but the diode becomes very hot that is so difficult to touch.... any explanation or...
1000762
Maybe too much current. measure it and compare it to diode specks check to make sure the diode isn't shorted.
1771956
This controller will handle up to 30amps. So for example, I have 3 panels at ~145w each (~7.5 amps) that are connected to each other and run to this controller. Since I'm only bringing in max around 22 amps, then this one controller is plenty. I could actually add one more panel to it of the same size as my current and it should continue to work fine. To answer your question though, yes, if your panels are large enough to put you over 30a with two panels, then run them side by side and connect the two controllers to the same battery bank without issue.
124993
Did you verify the correct terminals for battery and solar panel were corect?Sounds like charge controller might be bad.You could bypass the charge controller and connect the panel to the battery. Just remember as it can severally overcharge and damage battery.This would confirm operation of the panel and battery. Charge controllers are cheep to replace and can be purchased seperatly.
2215879
You would be looking at around 37V to charge a 24V battery bank at minimum. You can get 3 of these 37V panels and wire these in series and pump 111V under load into the battery bank with this controller. As long as the Voc voltage doesnt exceed 150V. The Voc voltage for these 37V panels is around 45V. You will get the 37V once its connected to the controller and in use but the panels will 45V just sitting there and measured with a voltmeter.
165915
You need a charge controller, otherwise you will fry your batteries...This also a 24 volt panel, so you will need solar charge controller tha can handle up to 45 volts.
1960807
Mine gets pretty hot, I charge 5 battery power packs. Not sure if it is too much or not, I just hope the circuitry shuts it off incase it gets too hot...
1332096
The charge control can handle up to 7A. Your 30 watt panel puts out ~1.68A at high noon. You should be fine with one charge controller charging two or more batteries and it would require more charge time. Just make sure you hook up your batteries correctly. Personally and for convenience I would much prefer to get two charge controller with two solar panels for the two batteries so that I could avoid having to move and or reconnect the batteries. A larger solar panel can would benefit you quite a bit if you need to drawn power from the battery each night. Hope you are using deep cycle batteries. The charge control can handle up to 7A. Your 30 watt panel puts out ~1.68A at high noon. You should be fine with one charge controller charging two or more batteries and it would require more charge time. Just make sure you hook up your batteries correctly. Personally and for convenience I would much prefer to get two charge controller with two solar panels for the two batteries so that I could avoid having to move and or reconnect the batteries. A larger solar panel can would benefit you quite a bit if you need to drawn power from the battery each night. Hope you are using deep cycle... » Read More The charge control can handle up to 7A. Your 30 watt panel puts out ~1.68A at high noon. You should be fine with one charge controller charging two or more batteries and it would require more charge time. Just make sure you hook up your batteries correctly. Personally and for convenience I would much prefer to get two charge controller with two solar panels for the two batteries so that I could avoid having to move and or reconnect the batteries. A larger solar panel can would benefit you quite a bit if you need to drawn power from the battery each night. Hope you are using deep cycle batteries. « Show Less
1912624
I do not know if the the circuit has a diode, but is not difficult do put a simple diode in the connection of the many solar panels do you want, put it so no power go to the panel, just out of the panel, put it close to the battery you are charging, use one for each panel you connect, the printed band of the diode, goes to panel side, the umprinted side goes to the battery, put it on the possitive wire, use this ones: http://www.amazon.com/Amico-Molded-Plastic-Rectifier-Diodes/dp/B009IN1KB8/ref=sr_1_1?ie=UTF8&qid=1387465887&sr=8-1&keywords=solar+diode
1643629
I run 14.8v all day long and never worry about it. I have even ran 22.2v and didn't phase it. But 4 cell is no problem for it.
1447152
I would not design a system with parallel battery charge controllers. I would combine the panels (or strings) using a combiner box and then wire it to a single battery charge controller. If the 40 MPPT is not big enough, go to a larger charge controllers, they come in all sizes. Very large systems may need multiple charge controllers, but then they have to be sophisticated enough to not fight each other. The Tracer is a good controller, but not a sophisticated charge controller.
148161
Of course friend, the panel is high efficiency, full sun generates 22 volts, you need a charge controller 12 Volt so you do not overload the system, it will keep you charged and when the battery is charged, disconnect, which prevents damage to your batteries!
218561
I fried a couple experimenting with voltages above 12V. The circuitry got very hot and failed. The lower voltages can be accommodated with the calibration pod. I have successfully powered it with a small solar panel with power ranges all over the board on cloudy days.
1865536
I don't have any problems with mine when the solar charge controller is on, and it peaks at 28.5v. Same with my 24v backup charger (which puts out 27+ volts). It should be fine.
1080569
You need to keep your voltage all the same, you can use this controller with a 24 volt panel but you need to have your batteries wired at 24 volts and if your using an inverter it needs to support 24 volts.
73389
If you ran 4 panels rated at 43 volts each in series (positive of one into negative of the next all the way thru) you would be putting over 160V into it. (43x4=172) It is rated for up to 60V input. Hopefully Chris C is right and there is a fuse. Otherwise yes, you fried it.
933679
you will need a 10 amp charge controller for one of these or a 20 amp charge controller for two.The charge controller will have adjustable settings "you set"I suggest a renogy 30 amp pwm controller for three reasons it will give you room to add more panels its cheap under $35 and its all you would need to accomplish battery charging in 12 or 24 volt mode,I hope this helps
1786605
This is a good solar panel. I have 2 batteries connected parallel, + to +, and - to -. This gives me the same voltage- 12 volts. I run my garage door opener and some accessories in my garage off a power inverter. The Ramsond solar charge regulator shuts off when batteries are full. Like T.J. said, make sure you aim the panel for best results, and hopefully its not foggy where you keep your boat!