Misuse of battery charging?

Hello, I drive the K1200S. I read in the user manual, when charging the battery (not above the power socket) the battery should be completely disconnected. But have the battery now charged 2 days in the built-in and connected condition with the Ctek XS 3600. Can there be any damage to it? The charger turns off after all, or in the charge maintenance when the battery is full. Need urgent tips. Furthermore I have a battery warning when I start the engine. Despite charge How about the other K1200S drivers?