Update: I just carved into the “latex” seal and the battery is spot welded. On a unit this small, unsealing, breaking the weld, replacement, welding, resealing, etc are all labor intensive. i.e. they are probably just throwing it away.
Which speaks to someone’s comment elsewhere in this forum about the true cost if the unit. If they are replacing the entire instrument for $250, the hardware cost (excluding development) is assuredly less than that.
