Replacement battery for SONY 6821 cordless phones and compatible models. This high-quality Ni-MH battery provides 3.6 Volts and 700mAh / 2.52Wh capacity for reliable, long-lasting performance. With dimensions of 45.90 x 31.20 x 10.70mm, it's an exact fit for your original unit. Restore your device's talk time with this dependable power source.
