Sony BP-T28 Cordless Phone Battery

The 300 mAh rating is exactly what I needed to revive my handset, and the charge holds for days even with heavy use. It fit snugly and powered up the display instantly.

Put this in my handset and the battery fit perfectly, no wiggling. It holds a charge for about a week of normal use, which is just as long as the original. My phone is finally back to working order.

Exactly what I needed to revive my old cordless handset—popped this in and it paired instantly. Voltage is spot-on at 2.4 V, and it's been holding a charge for a full week of light use so far.