The new battery could be causing the communication issue. First, check if the ***battery connector*** is properly seated, as a loose or damaged connection can disrupt communication between the battery and the device's internal components. Additionally, the device might need ***battery calibration*** to properly recognize the new battery, which can take some time or require a reset. In some cases, a third-party or incompatible battery might cause ***internal interference***, affecting other components like the logic board or charging system. Ensure that your device’s ***software/firmware*** is up to date, as a firmware update might be needed to properly support the new battery. Finally, if the new battery is ***defective***, it could lead to communication issues beyond just power problems. To troubleshoot, try reseating the battery, performing a hard reset, or testing with the original battery to rule out the new one as the cause.