Sony ULT Wear WH-ULT900N Battery 702428 520mAh OEM Replacement Parts

This is the original OEM battery for the Sony ULT Wear WH-ULT900N headphones. A direct replacement for a dead or degraded battery that no longer holds a charge, restoring your headphones to full battery life.

• Brand: Sony (OEM Original)
• Condition: Grade A – Excellent
• Fits Models: Sony ULT Wear WH-ULT900N

Key Features:

• Genuine OEM pulled battery model 702428
• 520mAh capacity, 3.85V nominal voltage, 2.0Wh
• Li-ion cell with original connector and wiring harness intact
• Direct replacement for a dead or degraded battery
• Tested and fully functional

What's Included:

• 1 x OEM Sony WH-ULT900N battery (model 702428, 520mAh)

This repair requires soldering. The battery connector must be desoldered from the headphone circuit board, and the new battery resoldered in place. This is an advanced repair recommended for experienced technicians only.

If you prefer not to repair it yourself, we also offer a mail-in repair service:
https://www.joesge.com/pages/repair-service-sony-headphones