FIELD: electronic equipment with storage batteries, for example, cordless phones. SUBSTANCE: circuits of electronic device outputs control signals to control power supply for selection of power level which is output by power supply with alternating output level. When electronic device has cordless phone with mobile storage battery power supply unit, recharge power supply provides recharge of storage battery of mobile power supply when circuits of cordless phone transmitter do not operate. When circuits of cordless phone transmitter, operate, storage batteries of mobile power supply do not recharge, so that signal power which is output by recharge power supply is equal to power required for power supply of circuits of cordless phone transmitter. EFFECT: increased functional capabilities. 10 cl, 6 dwg
