Plus the standard advice of ensuring that all connection, the batteries, charger slots and both ends of the adapters are completely clean. Also a good idea to keep track of what fails to charge, ie if its a specific charger slot, try it with a different adapter, if the fault moves then it's the adapter - I recently had one of my charger adapters go bad on me after well over a year of faithful service, it was probably salvagable, but they are so cheap, and I still have a pack of 5 spares.
no adapter needed on the titan for charging only the tornado

I am going to track them after they finish the charge see what they are like and if any dead drop them into another hole see what happen