I want to run my pocket beagle off an 18650 single cell lipo battery, as a backup power source. There are 3 pins on the pocket beagle that I know I need. GND to the LIPO -ve, Bat + to the LIPO +ve and Batt T (thermistor).
The question is: Can I run it without the thermistor (and its associated 75K resistor)?
The documentation on the power management ic (TPS65217C Single-Chip PMIC for Battery-Powered Systems, pg 32) says that:
“When the battery is removed from the system, the charger also flags a BATTEMP error which indicates that the TS input is not connected to a thermistor.”
Does that stop the charging process though? Figure 15 on pg 32 says that a temp fault will cause a suspend.
(Perhaps the simplest thing to do is jerryrig on of my 3d printer’s spare ntc thermistors to the thing, and affix it to the battery)
P.S. I know the device doesn’t supply 5V when running on battery. However, my wifi adapter seems to be working fine on the 3v3 volt line! Go figure.