Implementations described herein relate to a power hold-off circuit and power hold-off circuit operation. In some implementations, a system may include a battery, and a power hold-off circuit. The power hold-off circuit may include a step-up regulator, an abrupt power-loss (APL) switch, and one or more power hold-off capacitors. The APL switch may be connected to the battery when a voltage from the battery satisfies a voltage threshold. The APL switch may be connected to a step-down regulator or one or more power hold-off capacitors when the voltage from the battery does not satisfy the voltage threshold.