Sennheiser MX W1 Instructions for Use - Page 4

Safety instructions for Lithium-Ion rechargeable batteries If abused or misused, rechargeable batteries may leak. In extreme cases, they may even present a • heat hazard • fire hazard • explosion hazard • smoke and gas hazard Please understand that Sennheiser does not accept liability for damage arising from abuse or misuse. Keep away from children. Observe correct polarity. Do not heat above 70°C/158°F, e.g. do not expose to sunlight or throw into a fire. Do not expose to moisture. Do not short-circuit. Do not mutilate or dismantle. Do not get fully charged but unpacked rechargeable batteries mixed up. Do not continue to use defective rechargeable batteries. Only use rechargeable batteries recommended by Sennheiser. Switch rechargeable batterypowered devices off after use. Remove rechargeable batteries when the unit is not used for extended periods of time. Only charge rechargeable batteries with the appropriate Sennheiser chargers. When not using rechargeable batteries for extended periods of time, charge them regularly (about every three months). Only charge rechargeable batteries at ambient temperatures between 10°C and 40°C. Immediately remove rechargeable batteries from obviously defective devices. Dispose of rechargeable batteries at special collection points or return them to your specialist dealer. 3