Patent ID: 7524393

Claim:
A method for preparation of a gel electrolyte battery in which a battery device is accommodated in an exterior material, said exterior material comprising a laminated film and sealed therein by heat fusion, said method comprising: (a) a battery device preparation step comprising layering a positive electrode, a negative electrode, and a gel electrolyte to form said battery device; (b) an accommodating step of accommodating the battery device from said battery device preparation step (a) within said laminated film; (c) a first heating step of heating said battery device, accommodated in said laminated film in said accommodating step (b), under a uniformly pressured state; (d) a charging step of charging the battery device following the first heating step (c); (e) a discharging step of discharging the battery device following said charging step (d); and (f) a second heating step of heating the battery device under a uniformly pressured state, said step (f) occurring after step (e), wherein, at least one of steps (c) and (f) is performed by heating and pressuring said battery device using a block of heat-resistant rubber.