A system for identifying real time health status rating parameters of an electrical system of a vehicle, the system comprising a telematics hardware device comprising a processor (31,32), a memory, firmware and communications capability, and a remote device (19, 20) comprising a processor, a memory, software and communications capability; said telematics hardware device being configured for monitoring at least one electrical system component from at least one vehicle and for logging operational component data of said at least one electrical component, said telematics hardware device being configured for communicating a log of electrical system component data to the remote device (19, 20); said remote device (19, 20) being configured for receiving a plurality of voltage signals indicating a change in voltage of a vehicle battery at times associated with a plurality of crankings of a starter motor of the vehicle; said remote device (19, 20) being configured for determining for each of the plurality of voltage signals a minimum voltage of the voltage signal and generating a plurality of minimum voltage signals for a time period; characterized in that said remote device (19, 20) being configured for storing a minimum operational threshold voltage value (Vmin) representative of a failing health condition of the electrical system during cranking of the starter motor and a maximum operational threshold voltage value (Vmax) representative of an optimal health condition of the electrical system during cranking of the starter motor, wherein said minimum and maximum operational threshold voltage values (Vmin, Vmax) are derived from historical vehicle battery data stored in the remote device (19, 20) and have a distribution curve associated with life cycle of the vehicle battery spanning from an optimal health condition to a failing health condition; said remote device (19, 20) being configured for generating for each of the plurality of minimum voltage signals normalized real time electrical system health status rating parameters based on normalization of the plurality of minimum voltage signals with the minimum and maximum operational threshold voltage values (Vmin, Vmax) where the normalized real time component electrical system health status parameters are one of a probability and numerical value representative of the probability, wherein each of the normalized real time electrical system health status rating parameters of the vehicle is derived from: H = V − Vmin / Vmax − Vmin, where V represents one of a filtered and a non-filtered minimum voltage of the voltage signal, and when V is non-filtered said each of the normalized real time electrical system health status rating parameters is subsequently filtered; and said remote device (19, 20) being configured for communicating the normalized real time electrical system health status rating parameters to an owner of the vehicle. a telematics hardware device comprising a processor (31,32), a memory, firmware and communications capability, and a remote device (19, 20) comprising a processor, a memory, software and communications capability; said telematics hardware device being configured for monitoring at least one electrical system component from at least one vehicle and for logging operational component data of said at least one electrical component, said telematics hardware device being configured for communicating a log of electrical system component data to the remote device (19, 20); said remote device (19, 20) being configured for receiving a plurality of voltage signals indicating a change in voltage of a vehicle battery at times associated with a plurality of crankings of a starter motor of the vehicle; said remote device (19, 20) being configured for determining for each of the plurality of voltage signals a minimum voltage of the voltage signal and generating a plurality of minimum voltage signals for a time period; characterized in that said remote device (19, 20) being configured for storing a minimum operational threshold voltage value (Vmin) representative of a failing health condition of the electrical system during cranking of the starter motor and a maximum operational threshold voltage value (Vmax) representative of an optimal health condition of the electrical system during cranking of the starter motor, wherein said minimum and maximum operational threshold voltage values (Vmin, Vmax) are derived from historical vehicle battery data stored in the remote device (19, 20) and have a distribution curve associated with life cycle of the vehicle battery spanning from an optimal health condition to a failing health condition; said remote device (19, 20) being configured for generating for each of the plurality of minimum voltage signals normalized real time electrical system health status rating parameters based on normalization of the plurality of minimum voltage signals with the minimum and maximum operational threshold voltage values (Vmin, Vmax) where the normalized real time component electrical system health status parameters are one of a probability and numerical value representative of the probability, wherein each of the normalized real time electrical system health status rating parameters of the vehicle is derived from: H = V − Vmin / Vmax − Vmin, where V represents one of a filtered and a non-filtered minimum voltage of the voltage signal, and when V is non-filtered said each of the normalized real time electrical system health status rating parameters is subsequently filtered; and said remote device (19, 20) being configured for communicating the normalized real time electrical system health status rating parameters to an owner of the vehicle.