... DC5V 1000mA Charge Power: DC 9V5. Back-up Battery: Rechargeable battery Back-up Battery: Rechargeable battery.6. Standby Time: 24h ... research, developing and selling terminal network and communication products. Up until now, our corporation owns more than sixty kinds ... which can be divided into sixteen category, including wireless telephone, GSM terminal, wireless network card, PBX related to GSM, CDMA, ...