Proposing High Voltage Redundant Cells EV Have been thinking about the challenges and potential solutions for imperfect batteries and high reliability and range! I put together some criteria for a electric vehicle like it would like to design or see available (ideally as an open source community project) - Add or remove batteries new and old without having to worry or balance them all into a simple series chain! - Have every battery with its own intelligent charge and discharge monitor that can bridge out that battery if it is too discharged or has reached ful= l charge - Have the motor controller have a large range of voltage that it can switc= h toward the motor - Recuparative breaking charges a capacitor and a switching power supply up= s this to the voltage of the battery chain and its parallel buffer capacitor. - Having a higher voltage chain keeps size of wires and switching FET losse= s smaller - have battery monitor circuits comunicate via a serial link possibly modulated in its current path I might be forgetting some, but I would like to receive comments and suggestions ASAP Thanks Tobias --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .