Patent ID: 8055311

Claim:
A mobile communication terminal comprising: a power reception portion to externally receive power; a charge portion to charge at least part of said received power and supply the charged power to a load; a radio communication portion to receive power from said charge portion and allow transmission power to be varied; a transmission power detection portion to detect transmission power of said radio communication portion; and a control portion to switch to any one of a plurality of charge modes having different time periods to charge said charge portion, based on said detected transmission power, wherein said plurality of charge modes include a charge-off mode in which charging is not performed, an intermittent charge mode in which a charge period and a non-charge period are repeated, and a continuous charge mode in which charging is continuously performed, and said control portion includes a charge mode switching portion to switch to the charge-off mode, if said detected transmission power is at a first level, to switch to the intermittent charge mode, if said detected transmission power is at a second level at which transmission power is smaller than the first level, and to switch to the continuous charge mode, if said detected transmission power is at a third level at which transmission power is smaller than said second level.