What is the difference between 800 mAH and 700 mAH?
These figures represent capacities of use for batteries. If a
device uses 50 mA an hour on a 800 mAH battery, the device would
operate for 16 hours before depleting the battery. If the same
device was connected to a 700 mAH battery, the device would operate
for 14 hours before depleting the battery.