Replacement rechargeable 3.7V LI-ION walkie talkie battery pack for Motorola NNTN8023AC 2500/2900mAh MTP3100 MTP3150 MTP3250 MTP3200 MTP3500 MTP3550 MTP6550 MTP6750. Advanced alternatives to old batteries, let your walkie talkie take on a whole new life.