Can a charge controller be used to charge one battery from another higher voltage battery bank.

JimmyL

Solar Enthusiast
Joined
Jun 14, 2021
Messages
77
As the title states i would like to use a left over fully programable Plasmatronics 60 amp PWM charge controller to charge a 12v battery from a 24v bank? Sure i could hook up solar to the controller and charge it that way but i don't want to mess with a complete system.
Keen to hear reason why it will or will not work.

Thanks

James
 

JimmyL

Solar Enthusiast
Joined
Jun 14, 2021
Messages
77
It should work just fine though i have not heard of anybody doing exactly that.

Make sure you make a video... (just kidding!).
I might have to buy a cheap charge controller and see what happens. These are quite expensive units.
 

pierre

Somewhere down South
Joined
Dec 21, 2019
Messages
841
Just make sure you do not exceed the unit's Vin max.
 

mikefitz

Solar Addict
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May 28, 2020
Messages
886
It will be an interesting experiment, what will limit the current?

Mike
 

JimmyL

Solar Enthusiast
Joined
Jun 14, 2021
Messages
77
It will be an interesting experiment, what will limit the current?

Mike
Nothing and for that reason i now don't think it will work. I need to find another use for these expensive regulators.
 

HRTKD

Boondocker
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Apr 24, 2020
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6,474
Location
Somewhere South of Denver
There are a few threads where forum members have connected power supplies to their solar charge controllers. Is it ideal? Maybe not. But reports are that it works. You just have to make sure the volts coming in are high enough to initiate the charge on the target battery.
 
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