Patent ID: 9252607
Filing Date: 2016-02-02
CPC Classification: H02J

Claim Text:
1. A communication terminal having a secondary battery and configured to control charge of the secondary battery, the communication terminal comprising: a first detection unit configured to detect a temperature; a second detection unit configured to detect a transmission power of an electric wave; a charge unit configured to perform intermittent charge to the secondary battery; a change unit configured to change a duty ratio of the intermittent charge by the charge unit based on the temperature detected by the first detection unit and the transmission power detected by the second detection unit; a temperature determination unit configured to determine one of a plurality of temperature ranges based on the temperature detected by the first detection unit; and a transmission power determination unit configured to determine one of a plurality of transmission power ranges based on the transmission power detected by the second detection unit, wherein the change unit is configured to set different duty ratios according to the transmission power, for each of the temperature ranges, wherein the change unit is configured to set different duty ratios for the respective transmission power ranges, for each of the temperature ranges, wherein each of the different duty ratios is not 0%, wherein the secondary battery comprises the first detection unit, and wherein the first detection unit is provided at a position spaced from the second detection unit or charge unit.