PORTABLE POWER SUPPLY WITH BIDIRECTIONAL CHARGING AND PASSTHROUGH

A portable power supply including an alternating current (“AC) power input interface, an AC power output interface, and a battery core. The power supply further includes at least one switch. The at least one switch is electrically connected between the AC power input interface and the battery core. The power supply also includes a controller configured to control the at least one switch to selectively provide an AC power output to the AC power output interface based on power received from either the AC power input interface or the battery core.