Sennheiser BA90 NiMH 80mAh Replacement Battery

Keep your vintage Sennheiser wireless listening system powered and performing like new with this high-quality BA90 rechargeable replacement battery. Designed for dependable performance and long service life, this 2.4V NiMH battery is the ideal solution for restoring runtime to aging wireless headphones, assistive listening devices, and infrared audio receivers.

Perfect for replacing weak, worn-out, or non-charging original batteries.

Key Features

✅ Premium NiMH rechargeable battery technology
✅ Reliable 2.4V output for consistent performance
✅ 80mAh capacity designed to meet or exceed OEM specifications
✅ No memory effect — recharge anytime
✅ Precision-fit replacement for Sennheiser BA90 battery packs
✅ Ideal for restoring battery life in older Sennheiser wireless systems
✅ Factory fresh and fully tested for quality assurance

Technical Specifications

• Battery Type: NiMH (Nickel-Metal Hydride)
• Voltage: 2.4V
• Capacity: 80mAh
• Rechargeable: Yes
• Condition: Brand New
• Chemistry: Ni-MH
• Color: Black

The BA90 battery is engineered for stable charging performance and dependable runtime in compatible Sennheiser audio systems.

Compatible Models

This replacement battery is compatible with the following Sennheiser devices:

• Sennheiser BA90
• Sennheiser H200
• Sennheiser HDE1030
• Sennheiser HDI452-P
• Sennheiser HDI91
• Sennheiser HDI92-P
• Sennheiser IS450
• Sennheiser RI100
• Sennheiser SET100
• Sennheiser SET100-J

Also compatible with additional Sennheiser infrared and assistive listening systems using the BA90 battery platform.

Restore Your Listening Experience

Over time, rechargeable batteries naturally lose capacity, causing shorter listening times, charging issues, or complete power failure. Replacing your old BA90 battery can significantly improve performance and extend the life of your Sennheiser headset or receiver system.

NiMH batteries provide:

• Longer shelf life
• Better recharge durability
• Reduced memory effect compared to older NiCd batteries
• Reliable daily performance

Installation Notes

• Fully charge the battery before first use
• Compatible with original Sennheiser charging systems
• Easy drop-in replacement design
• Dispose of old batteries responsibly through certified recycling centers