Quick Charge QPXU User Manual
Page 6

 Illustration of series and parallel battery connections. 
 
Parallel
Series
 
 
 
 
 
 
REPROGRAMMING: 
Disconnect the charger from the batteries, and unplug the power 
cord. Remove the sheet metal screws holding the cover on. 
 
 
Select the switch configuration that most closely matches your 
application. Whether choosing maintenance mode, or shut off is a 
personal preference, however the maintenance mode assures 
batteries will remain charged and won’t self discharge. 
IMPORTANT: Use switch numbers as a guide, as some boards 
may be upside down, and reversed. 
When batteries are connected in 
Parallel the battery amp hour 
capacity is additive and the 
voltage remains the same. 
Example: two 180 amp hour 
12 volt batteries would equal 
12 volts and 360 amp hour capacity 
When batteries are connected in 
Series the voltage is additive and 
the battery amp hour 
capacity remains the same. 
Example: two 180 amp hour 
12 volt batteries would equal 
24 volts and 180 amp hour capacity 
