I ordered this unit in order to repair my e-bike with Bosch battery. It arrived quickly from stock in Germany. I focused on Bosch , the voltage and the power rating.( 36 volts and 400Wh.) The battery I received is indeed composed of 40 x 1680 Li-ion batteries but in a different configuration, than the Bosch battery I wanted to repair. So I can not use the battery that I received. I will have to send it back .I hope to find a replacement that I can use. The pictures make this clear. I hope that the seller is cooperative to solve this problem. I realise that I best had opened the battery case before ordering .