Devices and methods are disclosed for controlling content within a device environment through interaction among electronic devices of the environment. The BMS uses an array of synchronized voltage monitors to detect underperforming cells in the battery pack, and employs high speed parallel energy transfers to actively balance the voltages and capacities of cells which exceeds a preset threshold limit against the average voltage and capacity of the remaining cells in the battery pack as an integrated unit. 0\xd71014cm2 to grow an indium-containing layer on the surface portion of the high-concentration N-type diffusion layer at the bottom of the contact hole.