Sennheiser HDI 830 Instructions for Use - Page 5

Safety instructions Safety instructions for the lithium polymer rechargeable battery The BA 300 battery is a lithium polymer rechargeable battery. If abused or misused, this rechargeable battery may be damaged. Please understand that Sennheiser does not accept liability for damage arising from abuse or misuse. WARNING! In extreme cases, the rechargeable battery may even present a • heat hazard • fire hazard • explosion hazard • smoke or gas hazard 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. ! Store the devices/ rechargeable batteries in a cool and dry place at room temperature. Charge rechargeable batteries only with the appropriate Sennheiser charger. When not using the rechargeable battery for extended periods of time, charge it regularly (every six months for about one hour). Charge rechargeable batteries only at ambient temperatures between 10°C/50°F and 40°C/104°F. Do not charge the rechargeable battery if the device is obviously defective. Return defective devices or devices with defective batteries to your specialist dealer. 3