3 ms·

While I don’t doubt the behavior, I have a hard time believing that a product manager would let an expensive part like a battery get added to the BOM if it’s on

While I don’t doubt the behavior, I have a hard time believing that a product manager would let an expensive part like a battery get added to the BOM if it’s only purpose was to fail after ten years. Which suggests it performs some sort of function, which means this could be a bug rather than a malicious act. We will likely never know but I’m always willing to assign stupidity rather than malice

hulitu 2y ago
> While I don’t doubt the behavior, I have a hard time believing that a product manager would let an expensive part like a battery get added to the BOM if it’s only purpose was to fail after ten years. It depends how much of the BOM price was the battery.
K0balt 2y ago
When the battery is removed and the pin pulled up to the 3v bus, the thermostat works flawlessly. I traced the circuit, it goes between ground and the uC pin, through a 1 Mohm resistor, no other connection. It’s about right for killing a 300mah battery over 10 years. The pin is held low when the unit is energized by the thermostat signal lines.