• Plug the power adapter into the wall outlet and into the power connector at the back of i7910 terminal. Use the power adapter supplied with i7910. Many adapters can appear similar and will plug into i7910 but will not work properly causing erratic behavior, poor charging or damage to the unit. The i7910 with a fully charged battery can perform up to 200 transactions ( depending of the ticket size, transaction duration, time between transactions and backlight usage). The battery status is updat