TECHNOLOGY FOCUS - POLYMERS - Preferred Conductive Block: The ionically conductive block comprises a polymer backbone having polyalkylene glycol side chains. It is methoxypolyethylene glycol methacrylate, methoxypolyethylene glycol acrylate and other acrylate and methacrylate polymers modified to include polyethylene oxide and polyethylene side chains, polybutadiene or polyisoprene modified so as to include polyethylene oxide or polyethylene glycol side chains, polystyrene similarly modified through the phenyl group to include polyethylene oxide or polyethylene glycol side groups or their random or block copolymer derivatives.The ionically conductive block comprises a random copolymer comprised of a first ionically conductive monomer and a second monomer comprising an anion or their neutral precursors. The molecular weight of the ionically conductive polymer is at least 50,000 Daltons, preferably at least 75,000 Daltons, more preferably at least 100,000 Daltons, most preferably at least 200,000 Daltons.Preferred Components: The ionically conductive block and the second block are non-glassy and amorphous in a temperature range of 20-100 degreesC. The anion is immobilized in the second block and/or on the ionic conductive block. The mobile cationic species is confined in the ionically conductive block. The anion exhibits delocalized charge density. The polyalkylene oxide or polyalkylene glycol side chains are of length less than 20 oxide units. The continuous ionically pathway of the ionically conductive polymers is due to the morphology of microphase separation. The continuous ionically conductive pathway of the ionically conductive block is due to defects in microphase separation. The volume fraction of the ionically conductive block is 0.5-0.85.The polymer electrolyte further comprises a conductive liquid. It further comprises an electrolyte salt separate from the polymer electrolyte. The polymer electrolyte has a lithium ion transport value of greater than 0.5, preferably 0.8-1.0. It further comprises a lithium cationic species, and the ration of alkylene oxide moiety to lithium ion is 9:1-16:1.Preferred Second Polymer Block: The second polymer block comprises a random copolymer comprised of a first monomer selected for its ability to microphase separate from the ionically conductive block and a second monomer comprising an anion or their neutral precursor. The second block is polydecyl methacrylate, polylauryl methacrylate, polyalkylacrylates and methacrylates, polydimethyl siloxane, polybutadiene, polyisoprene, polyethylene and polyethylene propylene and their copolymers, or modified polystyrenes with flexible side chains of alkyl fluorocarbons and siloxane side chains attached through the phenyl groups and random or their block copolymer derivatives. The second anion-containing polymer comprises a hydrocarbon backbone having anionic side chains or their neutral precursor.Preferred Conductive Liquid: The conductive liquid is oligomeric polyethylene oxide or polyethylene glycol dimethyl ether.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Anion: The anion is carboxylates and carboxylic acid and their ester derivatives, sulfonates, imides, phosphates or iodinates. SPECIFIC MATERIALS - The cationic species are lithium (preferred), sodium, potassium, magnesium, or calcium.    EXAMPLE - Methacrylate monomers were stirred and vacuum distilled over calcium hydride (CaH2), then degassed and distilled again over 25% trioctylaluminum/hexane solution. The block polymer was polymerized at -78 degreesC by the addition of lauryl methacrylate and tert-butyl methacrylate, followed by oligooxyethylene methacrylate, to diphenylmethyl potassium initiator in 350 tetrahydrofuran. Upon termination with degassed methanol, the solution was concentrated on a rotary evaporator, precipitated and centrifuged. The polymer was Self-doped block copolymer electrolyte (SDBCE).    An excess of p-toluenesulfonic acid was added to a 2 vol% block copolymer solution in toluene. SDBCE preparation involved lithiation of the methacrylic acid groups by neutralization with a lithium methoxide.    The electrical conductivity of this polymer was measured by impedance spectroscopy, over the temperature interval spanning -20-90 degreesC. This established that lithium cations were localized in the ionically conductive domains, even though the anions were microphase into the second block domains.