The CTEK cigar plus shows the charge status of a battery at rest on the LED display. The cable is 40cm long and has 3 levels: green, yellow, and red.

• Green: battery is full (battery voltage >12.65V)
• Yellow: battery is partially discharged (battery voltage between 12.4V and 12.65V)
• Red: battery is empty (battery voltage <12.4V)

Note: this product only fits 12V chargers with a charging current of 0.8-10A and may ONLY be used on these devices.