chrispaiva wrote:Can I use the main charging connector to charge this trustfire ?
There's a diode for reverse polarity protection in the +ve line between the charge socket and the battery connector.
You'd need to remove that diode and replace with a link to use a lipo charger through the charge port.
The diode would confuse the monitoring circuit of the lipo charger. It only conducts in one direction and drops the voltage by about 0.6V when it does conduct in the forward bias.
Whether the 9X circuitry will tolerate being subject to the fluctuations of the charger output is another thing to consider.
I don't know the answer to that one.
So the safe answer is: Charge from outside the Tx until you get confirmation that it would be safe to charge inside.
At least the 18650s will charge quickly instead of overnight.