Replacement Cordless Phone Battery for LUCENT E5944 (Ni-MH, 3.6V, 700mAh). This high-quality rechargeable battery is an ideal substitute for your original AT&T/LUCENT 80-5848-00-00 model, ensuring reliable and long-lasting power for your cordless telephone. Dimensions: 45.90 x 31.20 x 10.70mm. Compatible with several models including AT&T/LUCENT E5943, E5944, E5947, and E5971.