Standard DC power connectors are long overdue. Let me suggest a few: * USB-C (type A and type C) (but simplify the voltage selection and change the spec so it

Standard DC power connectors are long overdue. Let me suggest a few: * USB-C (type A and type C) (but simplify the voltage selection and change the spec so it just supplies as many amps as it can) * 12V 5.5x2.1mm barrel connectors * 12V car accessory outlets * 12V battery terminals * 19V Dell laptop power connectors * 48V Power Poles (originally made by Anderson) in various amperages Lithium, rechargeable batteries should also be standardized: * Nokia 1100 prismatic cell (still used in many wireless peripherals, and could work well in almost all A/V remote controls) * 4AH lithium prismatic cell (for most cell phones) * 18650 (single cell) * 2-cell 18650 pack (pick any power tool battery and use that) * 4-cell devices should use a pair of the 2-cell 18650 packs. Black and Decker made VPX power tools that did that many years ago. * 5-cell lithium pack (maybe 18650 cells) Pick any power tool battery that has a flat top, meaning not my beloved Ryobi and use that. Then everyone can make adapters that add 1/2" to the height of the battery. * 40V lithium battery pack (pick any one of the electric lawnmower types that can handle a lot fo amps and use that) * Car-scale battery packs that are about 1 cubic foot, so that many of them can power your home or automobile