Our products have stable performance, long cycle life, high energy density and stable discharge voltage. - Compatible Model: ET-300-LReceiver ET-302-LReceiver EZ-900Receiver PE-903Receiver - Battery Part Number: BP-504 PL-711828N PL-711828 BP37TR BL-100 Purchase Instructions 1. Please carefully check the compatible model of the battery and the part number of the original battery to determine whether it is compatible with the device. 2. The size is consistent, and the installation is simple and convenient. 3. This product provides one-year after-sales service. If you have any questions, please let us know by email. Instructions for use 1. Do not use a low-quality third-party adapter charger to charge the device. 2. Do not use in high temperature environment. 3. It is strictly prohibited to disassemble, heat, prick and squeeze the battery. 4. Please use the battery reasonably to eliminate potential safety hazards.