High Capacity 2600mAh Li Ion Battery Replacement NNTN7335 NNTN7554 NNTN7335B Battery for XTS1500 XTS2500 Radio 7.4V 2600mAh Li-ion Portable Ham Two Way Radio Replacement Battery For Motorola Radios Compatible With Motorola Ham Hand Held Radio Models: XTS1500, XTS2500, MT1500, PR1500 Walkie Talkie Compatible Battery Model: NNTN7335 NNTN7554 NNTN7335B FIRST USING BATTERY: BATTERY STATUS IS FULLY DISCHARGED AND THERE IS ONLY A LITTLE POWER IN THE BATTERY. Please recharger battery when you first using ,the charging time at least 6 hours, Otherwise it will affect the battery using time. Never attempt to disassemble the battery pack .You have any comments and Suggestions for replace battery , you can leave a message via Amzon