User’s Manual EN-13• You can also charge the battery by connecting this unit to a USBport on your PC using a USB cable (not provided). However, thecharging speed is slower.• The average lifetime of the built-in Lithium-polymer battery isabout 300 cycles. After 300 recharging cycles, batteryperformance and capacity begins to decline gradually.• Do not disassemble or modify the battery.Using the power switch/lock keyTurning this unit on/off:n To turn on the power, slide the power switch/lock key to theposition.n When the power is on, slide the power switch/lock key to theposition to turn it off.Locking up the touch panel:To lock up the touch panel, slide the power switch/lock key to theposition.Power switch/Lock keyPower on/offScreen lock-up