Method of Repairing Accumulators of Portable Electronics Under Limited Resources

Laptop batteries contain up to four cascades of Li-ion cells connected in series. During the use of batteries the process of unbalanced degradation of the cells is happening. The dedicated protection circuit controls the voltage at each cascade of the battery and controls the discharge or charge control keys. Overdischarge or other causes can block the controller of the battery and it appears on the secondary good market. But the remaining resource of the cells allows the continue of normal operation of the accumulator. The unlocking of the controller of the laptop battery is not trivial task. But combining of the practical experience of the recovering of different batteries allows to summarize the theoretical and practical knowledge in form of the formalized models, sequences, classifications and the practical examples of repairing of batteries. The elements of method of repairing accumulators of portable electronics are proposed. The comparison of the results of theoretical research and practical attempts of the recovering the normal operation of batteries is provided in form of classification of controller models and the result of attempts.