The fan will be running so any heat buildup at 350MA will easily be dissipated and will not be an issue. A timer will likely be part of the system.
I did not discover the voltage drop at full charge, this is specified in all NIMH data sheets, and is used by the smart chargers to terminate charge.
http://www.panasonic.com/industrial/...MH_HHR650D.pdf
A standard AC plug would work, but the charger end with the prongs sticking out could be dangerous? Worth considering for sure.
