Originally Posted by strykerakamack

On a parallel board there are balance ports for each battery used.
The only thing that might mess you up is that the 235 being just plug a play unit has a Battery capacity range: 50-9900mAh , Not sure what happens If you try and charge a larger capacity battery since it is all electronically controlled . When you parallel charge you are adding the capacity together So you would be limited to 2 4500 mAh batteries being charged with a parallel board with your charger . You might want to just get the onyx 245 model So that you can charge 2 batteries at once and not be worried about using the charger outside of its operating parameters