Abstract: Aspects relate to transmission control. In some examples, a first apparatus (e.g., a wireless communication device) may output a first packet for transmission to a second apparatus. Subsequently, the first apparatus may suspend a second packet from being output for transmission to the second apparatus. In some examples, the suspension of the second packet may be based on a first voltage level of a power source being less than or equal to a first threshold (e.g., due to the transmission of the first packet).

Abstract: Techniques and apparatus for determining intrinsic resistance and/or battery life of a coin cell battery based on the recovery time of the battery voltage after a significant current draw event. Once the intrinsic resistance and/or battery life is known, a device powered by the coin cell battery can take action to lengthen the battery's useful lifetime. One example technique of operating a device powered by a battery generally includes performing an operation with a relatively high current draw from the battery compared to other operations of the device, determining a recovery time of a voltage of the battery after the operation, and estimating a position of the battery in a lifetime of the battery based on the recovery time.