M, Tronics
Hope your hol went well.
LiPo batteries are intolerant of overcharge and under charge. Both events cause irreversible chemical changes internally and in extreme cases can lead to failure, often quite spectacular. Ignoring the advice will result in loss of capacity so it's best to follow the advice.
The technology is advancing rapidly and the newer high capacity batteries advise a minimum discharge voltage of 3.3 volts per cell and some even higher. All the batteries I have purchased recently have this information printed on the sleeve together with the max charging current and voltage plus advice in max temperatures when charging.
I would not advise using other than a proper LiPo charger with a balance lead connected to prevent individual cells exceeding their specifications. Some of tghe cheaper imports on E-bay are copies but they can charge above the recommended levels. Some can be calibrated if you have the equipment but there are suppliers in the UK who sell the genuine articles nad they will not damage your batteries (or you!)
The Mtronic Tio charger was introduced to cater for LiPo batteries and will prevent overdischarge so provides the level of safety nor present in their earlier chargers. I have not used a Tio but looking at the manual it auto sets for LiPo cut off. You will have to ask Mtronik what the cut off voltage is as the Manual is unclear.
There is a 12v max rating on their ESCs but they are ok with fully charged SLA'S and 3 cell LiPos. (11.1v nominal)
Regardless of the type of battery and ESC you are using this was not causing the problem you were experiencing. if the battery works the motor and the ESC sets up correctly (both leds illuminated) the system should work.
I suggest you set up outside your model and make sure the Rudder servo is working correctly. Unplug the rudder servo and plug the ESC into the rudder servo socket just vacated. Using the same stick on the Tx that worked the rudder see if the ESC now works. if it does I suggest you plug the rudder servo into the channel you were using for the ESC and see if the throttle stick now works the rudder and the rudder stick still works the ESC.
If the ESC does not work in the previously working rudder channel this would indicate a possible fault in the ESC or the motor (possibly a short causing excess current and the ESC going into shut down mode).
If the ESC works but the rudder does not then you either have a faulty Rx (orTx) or are not using the correct channel. if you perform an arc with all the sticks and operate the 5th channel switch this may identify the problem.
Please let me know how you progress.
Dave
Dave