I have one 30 watt panel and would like to charge two batteries one in a boat and one in a motor home. Do I need two controllers?
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
1332097
If you are moving the panel from boat to motor home, then no you don't a second charge controller. just transfer the entire unit to each battery.
1332098
I don't think you can connect 1 solar panel to multiple controllers effectively at the same time. I would rotate the batteries as needed for charging; only one controller would be needed.
1332099
Depends if you connect the controller to the panel then you could connect it to each battery but not both at the same time.
1332100
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.
1074720
You don't need another 30 amp controller. 2 more panels would only put you at 28 amps, and I've never seen a panel that puts out its advertised amperage anyway.
752588
I have two 275 watt panels hooked to mine. I believe I have room to add another. It is a 30 amp charge controller. B
1513643
No. If you need 2000 watts you will need an inverter that puts out 2000 watts. You could connect two inverters to you batteries but not to each other.
2197000
3 batteries should do it, but to be safe 4.600 watts of panels to be safe. In theory you should need 2, but real world use is what im going by.
1948001
I believe the new 30 watt panels have 2 wires pre attached that go to the battery. It is possible for this low wattage and current model, that you may not need the controller. Ask Renogy 800-330-8678
1784694
Nothing else is required. I had my panels hooked up all winter long to a skidsteer and a tractor. Both fired right up in the spring. My understanding is that a controller is not needed with the 5 watt panels.
575744
Controllers don't care about brand name solar panels. It's just an input. You should consider a 30 amp controller for about the same price. You will expand your system as you find out how much more useful larger systems are. I started with 100 watts and now have 400. Just my humble advise.
1869981
I this panel on my sailboat along with a charge controller to charge a car battery for boat power. It puts out more than enough power to keep the battery charged. I was able to use this electrical setup to power LED lighting, a 400W DC to AC inverter, a GPS, a bilge pump, cell phone chargers, etc. This panel is ideal for boats, campers, and other situations that require portable power.
467337
You've probably checked on line, but this is a good site to reference http://www.chargingchargers.com/tutorials/solar.html 25 milliamps is really small, and may not generate enough watts to bring the controller into play. I connected the controller to a largish solar panel, output approx 20 volts, for keeping my boat battery topped up.. the combination seems to work well at this level. Hope this helps.
467335
You've probably checked on line, but this is a good site to referencehttp://www.chargingchargers.com/tutorials/solar.html25 milliamps is really small, and may not generate enough watts to bring the controller into play.I connected the controller to a largish solar panel, output approx 20 volts, for keeping my boat battery topped up.. the combination seems to work well at this level.Hope this helps.
693461
I've heard that the controller that comes in this kit only handles a max of 60 watts. The excess is bled off. But if you get two kits and connect the two panels together, you could attach a higher wattage controller to the system. Then just use your two kit controllers as portable power sources that can be hooked up to any auto battery.
255366
Thank you for your question.Deltran, the manufacturer of Battery Tender products doesn't recommend using two charge controllers on the same line. There is no need to have one charge controller in line with another. Make sure you use a charge controller rated for the size solar panel you have. NOTE: You can use multiple solar panels to charge a battery or battery bank and each panel can have its own charge controller. Just don't put the charge controllers on the same line.Thanks again for your question
2192939
To add to the previous answer - you will need at least one battery, one charge controller in addition to the solar panel. Once you have 3 components with the requisite wires then yes the solar panel provides the power that the unit needs to give you electricity. This unit with 4 100watt panels, a charge controller and 5 deep cycle marine batteries is the main source of power for my house.
409642
If you are using 4 panels with this kit it only uses a 20 amp controller. You must be using a 24v battery bank to use up to 400 watts. Can you explain your situation a little more? We are a bit confused with what setup you have. Thank you. AW
1014215
One will need MPPT charge controller with this setup 45 Amp should be good enough for three of these solar panels. Morningstar is the brand we sell & support with these panels.
63415
Tisa,I use my 20w panel to keep 2 batteries charged up. The batteries operate my garage door opener.You need to wire the 20w panel to the 7w Ramsond solar controller and the controller connects to the batteries. Its simple and all is explained with controller and solar panel instructions.