Sony BT50 Operating Instructions - Page 7

Charging the unit The unit contains a rechargeable Lithium-Ion battery, which should be charged before using for the first time. 1 Connect the supplied AC power adaptor to the DC IN 3 V jack on the unit. Wireless Stereo Headset To an AC outlet 2 Make sure that indicator (red) lights up while charging. RIGHT RIGHT To DC IN 3 V jack AC power adaptor (supplied) When the AC power adaptor is connected to an AC outlet, charging starts. Tip If the AC power adaptor is connected to an AC outlet while the unit is turned on, the unit will be turned off automatically. Charging is completed in about 3 hours* and the indicator (red) goes off automatically. * Time required for empty battery to recharge. Caution If this unit detects a problem while charging, the indicator (red) may turn off, although charging is not complete. Check for the following causes: - Ambient temperature exceeds the range of 0 °C - 40 °C (32 °F - 104 °F). - There is a problem with the battery. In this case, charge again within the above-mentioned temperature range. If the problem persists, consult your nearest Sony dealer. 7 Continued