A method for quality testing of a battery and a battery formation system

A battery formation system for quality testing of a battery, the battery formation system comprising:

• a monitor/control unit configured to measure electrical characteristics of the battery and further configured to instruct a battery formation process on the battery;
• a processing unit is configured to acquire data of the battery based on the measured electrical characteristics during the battery formation process, wherein the data of the battery temporally relates the measured electrical characteristics of the battery;
• and
• the battery formation system is configured to quality test the battery by phase wise comparing and/or cycle wise comparing the acquired data with reference battery data, and a phase is one of:
• a charge phase, a transitional phase and a discharge phase of the battery formation process, and a cycle comprises consecutive phases of the charge phase, the transitional phase and the discharge phase.