A rechargeable battery system comprising: a battery pack (20, 70, 220) including: • one or more batteries, • one or more sensors for sensing an operational parameter of the battery pack, and • a battery monitor and identifier module (22, 72, 222) coupled to at least one of the sensors; a battery charger (10, 60, 210) that is coupled to the battery pack (20, 70, 220) and operated to deliver power from a power source to the battery pack when an electrical connection is established between the battery charger and the battery pack; and a remote server (45, 100, 250) coupled to the battery charger (10, 60, 210) through a network and including a first communication device configured to receive operational information relating to the one or more batteries, the battery monitor and identifier module (22, 72, 222) being wirelessly connected with the remote server so as to send the operational information and the first communication device being configured to receive the operational information delivered wirelessly by the battery monitor and identifier module; the rechargeable battery system being characterized in that the one or more sensors of the battery pack comprise a sensor configured to provide an indication of ambient temperature in order to provide better control of the charging operation, taking into account the adverse impact of higher ambient temperature on charge rate and capacity. a battery pack (20, 70, 220) including: • one or more batteries, • one or more sensors for sensing an operational parameter of the battery pack, and • a battery monitor and identifier module (22, 72, 222) coupled to at least one of the sensors; • one or more batteries, • one or more sensors for sensing an operational parameter of the battery pack, and • a battery monitor and identifier module (22, 72, 222) coupled to at least one of the sensors; a battery charger (10, 60, 210) that is coupled to the battery pack (20, 70, 220) and operated to deliver power from a power source to the battery pack when an electrical connection is established between the battery charger and the battery pack; and a remote server (45, 100, 250) coupled to the battery charger (10, 60, 210) through a network and including a first communication device configured to receive operational information relating to the one or more batteries, the battery monitor and identifier module (22, 72, 222) being wirelessly connected with the remote server so as to send the operational information and the first communication device being configured to receive the operational information delivered wirelessly by the battery monitor and identifier module; the rechargeable battery system being characterized in that the one or more sensors of the battery pack comprise a sensor configured to provide an indication of ambient temperature in order to provide better control of the charging operation, taking into account the adverse impact of higher ambient temperature on charge rate and capacity. the battery monitor and identifier module (22, 72, 222) being wirelessly connected with the remote server so as to send the operational information and the first communication device being configured to receive the operational information delivered wirelessly by the battery monitor and identifier module; the rechargeable battery system being characterized in that the one or more sensors of the battery pack comprise a sensor configured to provide an indication of ambient temperature in order to provide better control of the charging operation, taking into account the adverse impact of higher ambient temperature on charge rate and capacity.