Abstract: A battery charge management method and device operable to perform that method. The battery charge management method comprises the steps of determining charge delivered to or from a battery based on Coulomb counting and updating an estimated battery state of charge based on the amount of delivered charge and measuring the battery current. Then comparing the updated estimated battery state of charge with a predetermined state of charge value of less than 100%, such that each predetermined state of charge value being associated with an expected battery current for that predetermined state of charge value. The method also includes modifying the updated estimated battery state of charge when the updated estimated state of charge is greater than the predetermined state of charge value and the measured battery current is greater than the expected battery current associated with the predetermined state of charge.

Abstract: A hybrid battery controller controls charging of a hybrid battery comprising at least two types of rechargeable cell and includes battery characteristic logic operable to determine at least two optimized charge profiles corresponding to the at least two types of rechargeable cell; power source characteristic logic that assesses operational characteristics of a charging power source; and adaptation circuitry that adapts the operational characteristics of said charging power source to perform optimized charging of the at least two types of rechargeable cell according to said at least two determined optimized charge profiles.

Abstract: Power management methods are provided for projecting the likelihood of forthcoming power outage at one or more mobile radio base sites and for mitigating the effects of such a projected power outage.

Abstract: A method and system for controlling charging of a rechargeable battery to obtain a desired state of battery charge. In one embodiment the method comprises assessing an indicator of state of battery charge to determine current battery charge and determining the desired state of battery charge at a predetermined point in an expected battery load pattern. Then receiving an indication of an operational characteristic of an available charge source per time slot to charge the rechargeable battery until the predetermined point and calculating in which of the time slots to charge the battery in order to charge the rechargeable battery to the desired state of battery charge by the predetermined point in the expected battery load pattern to optimise a charging characteristic to the predetermined point. A device and computer program produce is also disclosed, to run continuously, subject to configured parameters, to optimise charging characteristics.