Replacement Cordless Phone Battery for LUCENT E5943 (Ni-MH, 3.6V, 700mAh). This high-quality, long-lasting rechargeable battery is 100% compatible with the original AT&T / LUCENT 80-5848-00-00 part, restoring power and talk time to your device. Exact fit dimensions are 45.90 x 31.20 x 10.70mm.