FOBO under external power for computer interface.
FOBO under battery power for autonomous operation.
BE CAREFUL to not discharge the battery below 6.8 volts as this may result in permanent damage to the battery (it will no longer hold a charge). FOBO has no internal voltage monitor to warn when the voltage is low ... so you'll need to use a volt meter to test the voltage on the battery before usage.
ALWAYS unplug the battery from the power plug in the back of FOBO after usage. Even when the servo power switch is in the off position the battery will still be powering the Arduino board and will drain the battery past safe levels.
When not being used in FOBO the lipo battery can be safely stored in a special fire safe bag.