A charging system for charging a lithium battery of a utility vehicle, the charging system comprising: a receptacle configured to couple with an external charger; a lithium battery configured to provide lithium battery power to a set of electrical loads of the utility vehicle; and control circuitry coupled with the receptacle and the lithium battery, the control circuitry including a lithium battery management system, BMS, coupled with the lithium battery and the receptacle, the lithium BMS having a contactor configured to close to provide electrical access to the lithium battery and open to remove electrical access to the lithium battery, the lithium BMS opening the contactor in response to detecting the fully charged state of the lithium battery and being configured to: detect connection between the external charger and the receptacle, in response to detecting connection between the external charger and the receptacle, ascertain a charging state of the lithium battery, and based at least in part on the charging state, provide a control signal to the external charger through the receptacle, the control signal being configured to control charging output from the external charger to charge the lithium battery, and detect a fully charged state of the lithium battery, and in response to detecting the fully charged state of the lithium battery, provide, as the control signal, a command configured to (i) inform the external charger that the lithium battery is fully charged and (ii) direct the external charger to terminate charging, characterized in that the BMS includes an inactivity timer, and control logic coupled with the timer and the contactor, the control logic being configured to (i) start the inactivity timer in response to the lithium BMS reaching the fully charged state and (ii) in response to expiration of the inactivity timer and in the absence of sensed electronic activity by the utility vehicle, open the contactor to remove electrical access to the lithium battery. a receptacle configured to couple with an external charger; a lithium battery configured to provide lithium battery power to a set of electrical loads of the utility vehicle; and control circuitry coupled with the receptacle and the lithium battery, the control circuitry including a lithium battery management system, BMS, coupled with the lithium battery and the receptacle, the lithium BMS having a contactor configured to close to provide electrical access to the lithium battery and open to remove electrical access to the lithium battery, the lithium BMS opening the contactor in response to detecting the fully charged state of the lithium battery and being configured to: detect connection between the external charger and the receptacle, in response to detecting connection between the external charger and the receptacle, ascertain a charging state of the lithium battery, and based at least in part on the charging state, provide a control signal to the external charger through the receptacle, the control signal being configured to control charging output from the external charger to charge the lithium battery, and detect a fully charged state of the lithium battery, and in response to detecting the fully charged state of the lithium battery, provide, as the control signal, a command configured to (i) inform the external charger that the lithium battery is fully charged and (ii) direct the external charger to terminate charging, characterized in that the BMS includes detect connection between the external charger and the receptacle, in response to detecting connection between the external charger and the receptacle, ascertain a charging state of the lithium battery, and based at least in part on the charging state, provide a control signal to the external charger through the receptacle, the control signal being configured to control charging output from the external charger to charge the lithium battery, and detect a fully charged state of the lithium battery, and in response to detecting the fully charged state of the lithium battery, provide, as the control signal, a command configured to (i) inform the external charger that the lithium battery is fully charged and (ii) direct the external charger to terminate charging, characterized in that the BMS includes an inactivity timer, and control logic coupled with the timer and the contactor, the control logic being configured to (i) start the inactivity timer in response to the lithium BMS reaching the fully charged state and (ii) in response to expiration of the inactivity timer and in the absence of sensed electronic activity by the utility vehicle, open the contactor to remove electrical access to the lithium battery. (i) start the inactivity timer in response to the lithium BMS reaching the fully charged state and (ii) in response to expiration of the inactivity timer and in the absence of sensed electronic activity by the utility vehicle, open the contactor to remove electrical access to the lithium battery.