While the DS2438 datasheet lists an operating temperature of -40C to +85C, on page 4 of the same datasheet there is a statement that indicates that the measurable temperature range is from -55C to +125C…
FuelGauge to measure 2 x NiMH batteries (Type: Eneloop)
Voltage to measure is 1.6 - 2.8V, capacity around 750mAh
The DS2438 can be used, please make sure you have followed these steps
In the Data…