In circuit charging of NIMH pack
March 6, 2012
I'll be putting together a 14.4v 5ah battery pack out of 12 solder tabbed C cells. The raw voltage will be fed into a 100w step up DC-DC converter to supply 18v to a single board computer, and also to two 80w step down DC-DC converters to provide 5v to an Arduino sensor shield, primarily for 5v servos, and 7.2 volts for the motors of a 4wd Rover 5.
It's my intention to charge the pack with an "intelligent 2.4v-14.4v NIMH charger." What I'm not sure about is whether it would be safe to plug in the charger while the robot electronics are connected. I THINK that the DC-DC converters would keep the output voltages where they belong, but I'm not sure if the voltage converters would interfere somehow with the charging voltage/current.
Can anyone explain how that would work?