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Post by mj52 on Apr 29, 2015 5:59:43 GMT -8
Will a Tracer 40A CC charge a single 12V battery without overcharging it?
I will shortly have a system with 4 100W panels feeding this 40A CC (parts are coming in) this will, for now, feed 2 new Trojan 150Ah flooded batteries.
Suppose the grid goes down and my neighbor needs his car battery charged. Can I charge it using this CC or is it a fire hose trying to fill a water bottle?
Can I adjust the CC output by adjusting the CC input (using 1,2 or 3 panels)?
Will I be damaging the CC even thinking about trying something like this?
Thanks, Mike
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Post by Admin on Apr 29, 2015 8:55:19 GMT -8
Hi Mike,
All charge controllers are built to NOT overcharge batteries.
They will work with just about any 12v battery as long as it is a battery type acceptable for the controller.
For the 40A MPPT Charge Controller can support SLA, Flooded, Gel, and AGM type batteries.
You can definitely reduce that amount of charge by removing panels but the controller won't over charge the battery in the first place so I don't see any reason to disconnect more panels unless the battery can only take so much charge at once.
Let us know if we can help with anything else.
Regards,
AW
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Post by Jorge on May 1, 2015 6:19:48 GMT -8
I have the 40amp MPPT Charge Controller. What is the setting for AGM? The only options i am given are SLD, GEL, FLD. Hi Mike, All charge controllers are built to NOT overcharge batteries. They will work with just about any 12v battery as long as it is a battery type acceptable for the controller. For the 40A MPPT Charge Controller can support SLA, Flooded, Gel, and AGM type batteries. You can definitely reduce that amount of charge by removing panels but the controller won't over charge the battery in the first place so I don't see any reason to disconnect more panels unless the battery can only take so much charge at once. Let us know if we can help with anything else. Regards, AW |
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Post by Admin on May 1, 2015 10:25:44 GMT -8
For AGM, the best match is generally Sealed (SLD). We do always recommend that you check your battery's spec sheet to confirm that the voltages and current that our controller output are in line with what your battery manufacturer recommends for its batteries.
Renogy Tech Support
SR
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Post by Virgil on Nov 24, 2015 9:26:23 GMT -8
I have six Harbour Freight 15 watt 12 volt solar panels, with a ocv of 23.5 each, which would be a total of 141 ocv. Would the renogy 30 amp cc with a maximum of 150 ocv input be acceptable to use on two 12 volt flooded batteries in parallel wihout damaging batteries. And presently have pwm cc and am looking to up input to batteries for cloudy days. Is this cc overkill?
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Post by Admin on Nov 25, 2015 8:04:00 GMT -8
Hello Virgil,
Yes you can use a 30 amp cc with these 6 panels but you will need to wire all six panels in parallel. This will keep your system at 12 volts.
O.C
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Post by spiderbob on Dec 20, 2015 12:16:06 GMT -8
Hello Virgil, Yes you can use a 30 amp cc with these 6 panels but you will need to wire all six panels in parallel. This will keep your system at 12 volts. O.C Will not the controller adjust the imput to 12v for the batteries, without having to run in parallel? I thought all controllers adjusted the output automatically without having to keep a parallel wiring for 12 volts or is it because the total amount of amps will output the 30a controller.
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Post by oldhome7 on Dec 22, 2015 6:49:07 GMT -8
spiderbob, he's using the PWM which from my understand with that one input voltage=output voltage. So 24v battery needs 24v from the panels and 12v needs 12v. A MPPT controller will adjust like you are thinking though.
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Post by spiderbob on Dec 22, 2015 8:05:24 GMT -8
ok, that makes sense, thank you
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