Battery compatible with Sennheiser OfficeRunner (not original), 3.7 V, Li-Polymer

The battery in detail: voltage: 3.7 V, high capacity with 180 mAh/0.67 Wh, quality cells from the latest production, cell type: Li-polymer, dimensions: 33.1 mm x 16.4 mm x 4.8 mm, weight: 10 g. Colour: black. 100% compatible LONG LASTING BATTERY PERFORMANCE FOR UNINTERRUPTED LISTING ENJOYMENT: The battery ensures long-lasting performance to enable uninterrupted listening. These extended operating times for a continuous listening experience without frequent charging interruptions. COMPATIBILITY AND MODEL MATCHING:High compatibility,Before purchasing, it is recommended to check the model number and size carefully to ensure smooth battery replacement. SAFETY AND RELIABILITY: Built-in safety mechanisms protect against overcharging, overheating and other potential risks. Reliable performance and long life for lasting listening pleasure. EASY CHARGING & HANDLING: Easily charge directly from the headphones or by using a separate charger. User-friendly handling for smooth battery replacement.