Ok so it's more acid testing and development than actual deployment. It's great that you are taking the time to get to the bottom of the connection behaviours.
I am also a user of the Particle Photon devices that provide me with low power remote solutions over WiFi. For these device's during test I use a 3.7v LiPo battery that gives me hours and hours of use. I wonder if the Puck's will tolerate the 3.7 to 4v of a LiPo? Perhaps a small voltage regulator is required? I see there is a thread about a making a shield/jacket for the Puck. This includes a secondary battery supply. Sounds a good idea to me especially for long testing periods.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Ok so it's more acid testing and development than actual deployment. It's great that you are taking the time to get to the bottom of the connection behaviours.
I am also a user of the Particle Photon devices that provide me with low power remote solutions over WiFi. For these device's during test I use a 3.7v LiPo battery that gives me hours and hours of use. I wonder if the Puck's will tolerate the 3.7 to 4v of a LiPo? Perhaps a small voltage regulator is required? I see there is a thread about a making a shield/jacket for the Puck. This includes a secondary battery supply. Sounds a good idea to me especially for long testing periods.