Battery resting periods are used for balancing in electromobility. However, balancing can only start once the charging process is finished, which causes considerable delay. The batteries of electric cars that are driven every day may never have a true resting period. This is where battery management systems (BMS) are advantageous, because instead of balancing based on voltage, they level, i.e. carry out efficiency leveling. Leveling only takes a few seconds without the need for resting periods. 

In conventional battery management systems (BMS), every load cycle causes a very small cell drift that can neither be detected nor measured until much later. But what starts small will eventually have dramatic consequences: low useable capacity and fewer remaining load cycles. ETA-Leveling will prevent this.

Operating battery cells connected in series – from different manufacturers, of different ages, and at different nominal capacity: ETA-Leveling makes it possible. It is the only charging process available enabling the simple reuse and repurposing of, for example, cells from power storage modules declared defective.

ETA leveling, a new charging method, extends the service life of batteries quite significantly – and completely independently of hardware, cell chemistry or type of application. The patented algorithm was developed by the team at Benning CMS Technology GmbH. The process has recently become available by license and can be used for battery blocks of all types.