Bosch Kl 1206 Manual -

Because this is an older "W" characteristic charger, the charging current will naturally drop as the battery voltage rises. You should monitor the battery temperature and charge status manually.

Connect the clamp to the positive (+) terminal of the battery. Bosch Kl 1206 Manual

Suitable for batteries ranging from 20 Ah to 90 Ah . Power Consumption: 85 W. Input Voltage: 230V / 50-60 Hz. Because this is an older "W" characteristic charger,