A trade-in battery system for purchasing used secondary batteries and selling the charged used secondary batteries, wherein the trade-in battery system comprises a purchasing step, a pre-storage deterioration inspection step, a charging step, a storage step, a packaging step, and a selling step.

 
Web www.patentalert.com

< Rotary electric machine for vehicle and control device thereof

< Enabling circuit for avoiding negative voltage transients

> Battery charge indicator such as for an implantable medical device

> Battery state monitoring circuit and battery device
~ 00205