







🔋 Power your premium sound with confidence and style!
This 3.7V 650mAh rechargeable lithium polymer battery is engineered for Sennheiser Momentum 2.0, HD 4.40/4.50, Aerox 9/5, and Urbanite XL wireless headphones. Featuring a compact 40.5×25×6mm form factor and weighing only 12g, it delivers 2.4Wh of power with built-in Japanese Seiko IC protection against overcharge, overdischarge, overcurrent, and short circuits. The battery includes a genuine JST 1.25mm 3-wire connector and heat shrinkable sleeve for easy, safe installation. Ideal for professionals who demand reliable, long-lasting audio performance without compromise.

| Antenna Location | electric tools |
| Battery Weight | 12 Grams |
| Item Dimensions | 1.59 x 0.98 x 0.24 inches |
| Unit Count | 1 Count |
| Battery Cell Type | Lithium Polymer |
| Amperage | 0.65 Amps |
| Battery Capacity | 650 Milliamp Hours |
| Reusability | Rechargeable |
| Voltage | 3.7 Volts (DC) |
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