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I've got various 250w panels with Voc of 37V. I want to put one on my truck to charge 2 batteries (12V) but I am having trouble finding a MPPT controller that will take the input voltage. Does anyone know of something?
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I am no help with your quest but welcome back! Haven't seen you for a while.[SIGPIC][/SIGPIC] -
Around $200 retail:
Morningstar Corporation
SunSaver MPPT
15A Charge Controller
SS-MPPT-15L
Converts 36V or 24V PV Arrays
Provides a means to use up to a 36V PV array to charge either a 24V or 12V battery.
Less expensive than other MPPT controllers and is affordable in smaller PV systems up to 400WComment
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Little update to this older thread, I realized I have room for 2 of them 250w, 37v jobbies so now I am looking for the same type of controller that can handle a bit more current (18A or there abouts). How about the ProStar PS30? I know it is not MPPT but....Comment
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With a 37V panel and 12V batteries you have no choice but to go MPPT. Otherwise you will be throwing away 2/3 of your panel power and would be better off (in terms of battery charging power) with just one panel and a cheaper MPPT controller than two panels and PWM controller.SunnyBoy 3000 US, 18 BP Solar 175B panels.Comment
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The Tracer 4210N MPPT charge controller sell for around US$250 on Amazon with the display. It will give you 40 amps and 100 volt maximum input. it work with 12 or 24 volt battery system.Comment
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AliExpress has an even better price, including shipping to Toronto. I wouldn't buy it for a customer but for myself, I might. Note that the weight is half of a US built product so what does that tell you. If I buy it I will add heat sinks to it before start up just to make sure.
Update.......The Tracer output is only 20A @12Vdc which is not great with 500w of input. The Tristar is 30A for not that much more money and 40A for a bit more again. Think I'll got with the Morningstar.Comment
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How about a Midnite Solar - "Kid" controller?PaulComment
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The Tracer 4210N is 40 amps MPPT charge controller with 500 watts 12 volt and 1000 watts 24volt capacity. It does not run hot and it have a good size heat sink on the back of the unit.
The price is 1/3 of the US built so I don't know why are you complain about the weight. You get what you pay for. I use it for a few months and it work without any problem. I have change mine to the OUTBACK FM60 because I add another panel to the system and the Tracer has the maximum input 100 volt, my 3 panel VOC is over that.Comment
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I used the tracer 3215rn for over a year with no issues. It worked well for the purpose. Very little programming capability. It goes into bulk and absorb every day whether it is needed or not. There are no voltage adjustments that can be made, but a basic charger you don't have to do anything with, it works. I switched to the midnite classic because I want to step up my array, and probably move up to a 48v bank.Comment
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