NOVELTY - The method involves determining current throughputs of multiple rechargeable energy storage systems (101). One of multiple rechargeable energy storage systems is charged at current throughput until a predetermined condition is met if a current throughput of one of multiple rechargeable energy storage systems is greater than one or more current throughputs corresponding to other multiple rechargeable energy storage systems, where the predetermined condition comprises at a predetermined interval of time elapses.    USE - Method for charging multiple rechargeable energy storage systems such as lead-acid batteries and lithium-ion battery that is used to provide electricity to an electric vehicle such as passenger vehicle, commercial vehicle, industrial vehicle, full electric vehicle and/or any other grid-connected vehicle e.g. car, truck, motorcycle, bicycle, scooter, boat, train, aircraft, airport ground support equipment, and/or material handling equipment such as a fork-lift and mobile electronic device such as a digital music player, a digital video player, a digital music and video player, a cellular phone such as smartphone, a personal digital assistant, a handheld digital computer, iPod (RTM: portable media player), iPhone (RTM: internet-connected multimedia smartphone), iTouch (RTM: potable media player), iPad (RTM: tablet computer) and Blackberry (RTM: handheld wireless electronic-mail device). Can also be used for batteries such as batteries such as rechargeable e.g. traction battery and/or non-rechargeable batteries, a valve regulated lead acid battery such as gel battery and/or an absorbed glass mat battery, a nickel-cadmium battery, a nickel-zinc battery, a nickel metal hydride battery, a zebra such as molten chloroaluminate battery, fuel cells, capacitive energy storage systems such as super capacitors e.g. electric double-layer capacitors, and/or inertial such as flywheel energy storage systems.    ADVANTAGE - The method enables charging multiple rechargeable energy storage systems according to the current throughput charge protocol so as to increase efficiency by maximizing total current throughput and by minimizing the electric power required to provide the electricity for the charge with which multiple rechargeable energy storage systems are charged, thus maximizing throughput with a charge system such that current throughput for multiple rechargeable energy storage systems can be maximized.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following:    (1) a control system for charging multiple rechargeable energy storage systems, comprising a communication module configured to determine current    (2) a method for providing a control system for charging multiple rechargeable energy storage systems.    DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram of a control system for charging multiple rechargeable energy storage systems.    Control system (100)    Rechargeable energy storage systems (101)    Communication module (102)    Control module (103)    Charge system (104)