Will this controller deal well charging a 12V battery from a 24V 136W solar panel, given the large voltage difference?
1258373
this controller doesn't care if it is 12 or 24 volts,, not very many watts though,, it will take a while to much charge in that battery
1258374
I thought it was junk and returned it and bought a much more expensive, but much better controller from Blue Sky.
1258375
I'm using this controller to charge a bank of 4 12 volt batteries and my solar panel is rated at 30 watts and 17.5 volts. It seems to be working fine but I don't know if the controller lists any maximum input voltage or not. One would think it would be capable of handling a wide range of voltage just because of the nature of most solar panels but that is simple logic and simple logic doesn't always apply.
1258376
Yes, James, it should do just fine, as the 1210RN is rated for 100V of panel voltage. The switching regulator is essentially an "energy converter" where watts-in less conversion loss equals watts-out at a nominal charge voltage. I use two paralleled sets of three 12vdc panels in series which produces about 60vdc open circuit and 36vdc under load (90W). The 100AH 12vdc AGM battery is happy as can be with an approximate charge of 13.8-14.0vdc charge. Best luck - Bill N4LG
1258377
Yes, James, it should do just fine, as the 1210RN is rated for 100V of panel voltage. The switching regulator is essentially an "energy converter" where watts-in less conversion loss equals watts-out at a nominal charge voltage. I use two paralleled sets of three 12vdc panels in series which produces about 60vdc open circuit and 36vdc under load (90W). The 100AH 12vdc AGM battery is happy as can be with an approximate charge of 13.8-14.0vdc charge.Best luck - Bill N4LG
1734619
Zach, go to the website: Remember to calculate the maximum voltage you will receive. For example, I use a 24 volt system for five solar panels of 270 watts each. When the sun shines at high noon, I get about 35v going to the batteries. So I figure my watts limitation for the C60 Charge controller is 2100, but I am coming in at 1350 watts for five panels.
1842768
My panel is 50W, and this controller could handle more. It would make sense to me to wire them in parallel to keep the voltage around 12-14V and double the wattage.
1004018
Yes, that's what it is made for. The controller will charge the battery until it gets to around 13.7vdc and then rest until the battery voltage falls to less than 12.7vdc and the charger will again start to charge the battery and so on. The fully charged voltage of most 12vdc batteries is 12.7vdc.
341463
This unit will definitely provide 24 VDC from a 12 VDC input. I have used several in an application where we needed a 24 VDC supply off of a 12 VDC heavy equipment battery pack. However, charging a battery is typically a more complicated issue - amperage load and not over-charging etc. So you should be good for 24 VDC but I do not know enough in regard to battery charging to say yes or no
232357
I am using the panel connected directly to a large, deep-charge battery, and it works OK. You can go through a controller if you are worried about overcharging your battery.
728421
From the description:This charge controller offers protection for your 12 Volts lead-acid batteries and solar panels. It protects your battery from overcharge and discharge. For use with 12 Volts solar panels and batteries only, it handles up to 7 ampere of array current and up to 100 watts of solar power.
888202
Val this charge controller can only handle a maximum of 500w of solar for a 12v battery system, or up to 1000w for a 24v battery system. Since you are planning to use 3 x 250w, you will need to wire those batteries in series for 24v, and get a 24v inverter. If you don't want to go for a 24v battery configuration, and want to stick with 12v, then you will need to drop a panel and just go with 500w, or you will need to use an additional controller (controller 1: 2x250w, controller 2: 1x250w or 2x250w).
1233768
Dont know if i understand your question. But it doesn't sound like it would work because one 12v panel wont charge 24v battery unless you connect two 12v panels in series.
972671
I'm new to solar charging but it sounds as though your choice of controller may make a bigger difference than the type of solar panel. Research MPPT controllers here on Amazon.
1123837
A test you can make is to directly connect the panel to the battery, correct polarity important or you will fry things. If the voltage is 17 volts or under you are good to go. If it is still over 18 volts you will be over current and ruin the battery. You cannot have the controller set to 24 volts for your 12volt battery!
93567
Yes, it's for the 12v system. I used it with the Bluesky 25amp controller. Grape Solar tech support is excellent, they helped me to pick everything for the local RV shop to install
49231
You can use this controller for 12v but there will be power clipping. The best controller would be the Outback FM-80 for 1KW solar panels charging a 12v battery bank. Thanks, ML SOLAR
1031235
The whole point of this type of controller is to take your solar power of any voltage up to 48 volts (in this case) and output the proper voltage 12 or 24 volts to your batteries. Your panels do not need to be 12 volts, they simply need to fit in the specs of the controller which is a 48volt maximum input voltage. It will then regulate your output voltage to 12 or 24 volts, whichever you choose.
1233767
The solar panel voltage must be higher than the battery voltage you are charging. A 12Volt (open-circuit about 18 Volts) solar panel will not charge a 24 volt battery.
453603
Since the Controller os automatic Voltage sensing on the Battery Side, the answer is NO. The Controller will sense a 12v battery system and will shut down, as in overloaded. The Controller will allow you to hook up to a 24 volt solar panel but the max input into a 12v battery system is 390 watts (30 amps nominal throughput to the batteries).
31482
I have had four one hundred watt panels hooked up to this same charge controller for nearly a year and it works fine. At first, I had them hooked up with the panels at 12v and the battery bank at 12v, then I switched the hookup to two sets of two panels in series to put the panels at 24v with the battery bank remaining at 12v. I get a little more power out of the panels this way because a lower amperage means a smaller voltage drop between the panels and charge controller, even though the wattage from the panels is the same. It works fine. With an MPPT controller, the voltage of the panels is not dumped directly into the batteries so you can hook it up either way. If you hook the panels in sets to reach 24v, then your only limit is the 30 amps to the battery bank. Anything above that is simply lost.