DELTA VOLTAGE HYBRID BATTERY FUEL GAUGE

Example devices and techniques are described herein for determining a relative state-of-charge of a battery. An example device includes memory, a battery, a temperature sensor and processing circuitry coupled to the memory and the temperature sensor. The temperature sensor may be configured to sense a battery temperature. The processing circuitry may be configured to estimate an end-of-discharge state-of-charge of the battery. The processing circuitry may be configured to estimate a remaining capacity of the battery. The processing circuitry may be configured to estimate a full charge capacity of the battery. The processing circuitry may be configured to estimate a relative state-of-charge of the battery and generate a representation of the estimate of the relative state-of-charge of the battery for output.