Moin in the round. I have been having the problem for a long time that my Kia Connect app battery reports “attention” or warning”. I then charged it with a Ctec charger, but the messages come despite charging and driving again and again. Voltage is measured more often, with message about 12.4V. I type that it is already gone after only 3 years. Do you have to register something with a tester like with Audi or BMW, or simply exchange and good?