possibility to use charger and battery at the same time

[dorg]

hi everyone
i want to make a robot using the frc battery:
http://www.andymark.com/battery-p/am-3062.htm
and this charger:
http://www.andymark.com/Battery-Char...-p/am-2555.htm

the thing is, i want the battery to power the robot, and from time to time connect the charger to the battery in order for it to charge (while it is powering the robot)

is that possible?
if not, are there better solutions? battery charger and such?

thank you,
dor