The APTO technology automatically detects the battery type and activates the appropriate charging program, which displays the remaining charging time until readiness. No buttons, no modes - simply connect the CS One to any 12V battery and charge it. The polarity-free terminals eliminate the need to think about which terminal goes where. No more incorrect connections. The terminals are also spark-proof, so nothing happens if they are accidentally touched. Additional functions can be unlocked via the Ctek app using Bluetooth. Select "Recond" to restore and recondition the battery. Choose "Wake Up" for lithium-ion batteries with under-voltage protection or to revive deeply discharged lead-acid batteries. Select "Supply" to turn the CS One into a convenient 12V power source. You can also monitor the voltage and current supplied by the charger. CS One: Charging batteries has never been easier. The Ctek CS One is a world innovation for the care and maintenance of vehicle batteries with Aptotm, the technology for adaptive charging. Equipped with Aptotm technology, the CS One is Ctek's most innovative battery charger: you don't have to worry about which terminal goes where. The CS One stands for thoughtful simplicity and enables innovative polarity-free charging. Just connect the CS One to any 12V battery and enjoy consistently optimal charging performance. Thanks to the polarity-safe terminals, you no longer have to worry about which terminal belongs where, ensuring you never make an incorrect connection again. Stress-free, safe charging and conditioning of batteries. Your daily companion for a healthy and ready-to-use battery.