A battery recovery system, comprising: an automatic recovery control circuit and a power conversion system, the ARC circuit and the PCS are configured to be connected in parallel between an AC power line and a DC bus, the ARC circuit including: an AC to DC rectifier configured to be coupled to the DC bus and configured to convert AC power from the AC power line into DC power on the DC bus, characterised in that the ARC circuit further includes: a relay configured to be coupled between the AC power line and the AC to DC rectifier, the relay configured to switch to an open position in response to a control signal from the PCS disconnecting the AC to DC rectifier from the AC power line, and the relay configured to switch to a normally closed position when a low state-of-charge or DC voltage in a battery system is insufficient to operate the PCS, the closed relay configured to connect the AC to DC rectifier to the AC power line so that the DC voltage on the DC bus powers the PCS. an automatic recovery control circuit and a power conversion system, the ARC circuit and the PCS are configured to be connected in parallel between an AC power line and a DC bus, the ARC circuit including: an AC to DC rectifier configured to be coupled to the DC bus and configured to convert AC power from the AC power line into DC power on the DC bus, characterised in that the ARC circuit further includes: a relay configured to be coupled between the AC power line and the AC to DC rectifier, the relay configured to switch to an open position in response to a control signal from the PCS disconnecting the AC to DC rectifier from the AC power line, and the relay configured to switch to a normally closed position when a low state-of-charge or DC voltage in a battery system is insufficient to operate the PCS, the closed relay configured to connect the AC to DC rectifier to the AC power line so that the DC voltage on the DC bus powers the PCS. an AC to DC rectifier configured to be coupled to the DC bus and configured to convert AC power from the AC power line into DC power on the DC bus, characterised in that the ARC circuit further includes: a relay configured to be coupled between the AC power line and the AC to DC rectifier, the relay configured to switch to an open position in response to a control signal from the PCS disconnecting the AC to DC rectifier from the AC power line, and the relay configured to switch to a normally closed position when a low state-of-charge or DC voltage in a battery system is insufficient to operate the PCS, the closed relay configured to connect the AC to DC rectifier to the AC power line so that the DC voltage on the DC bus powers the PCS. a relay configured to be coupled between the AC power line and the AC to DC rectifier, the relay configured to switch to an open position in response to a control signal from the PCS disconnecting the AC to DC rectifier from the AC power line, and the relay configured to switch to a normally closed position when a low state-of-charge or DC voltage in a battery system is insufficient to operate the PCS, the closed relay configured to connect the AC to DC rectifier to the AC power line so that the DC voltage on the DC bus powers the PCS.