The Hobby King 2.4Ghz 6Ch Tx & Rx uses 8 AA batteries and they don’t last very long. It is a great radio for the price, but is a lot greater when you run it with a LiPo battery and it is an easy conversion. I converted mine to use the Turnigy 1450mAh 3S 11.1v Transmitter Lipoly Pack which was designed for this exact purpose.
Conversion from AAs to a LiPo Battery Mod Steps:
Turn off the transmitter before beginning!!
Step 1 – There are a couple of connectors that can be used to connect to the battery. I had an extra black servo connector, so I chose that option. The other connectors can only be connected one way. When using the servo connector, I have to make sure the black and red wires are matched.
Step 2 – My spare servo connector had three wires, red, black and white.
Step 3 – I cut the connector wires short and pulled the white wire out of the connector and put it aside. Later, I will solder it to the battery wires in the transmitter.
Step 4 – The battery wires in the transmitter are soldered to the battery housing in the back of the transmitter. After disconnecting the the other end from the transmitter pcb, I pulled the two wires out of the solder. It doesn’t take much of a tug to pull them out.
Step 5 – I then cut the longer red wire to be the same length as the black wire.
Step 6 – The battery wires from the transmitter needed to be soldered to my servo connector.
Step 7 – Before soldering, I slipped on a piece of heat shrink on each wire and twisted the wires together, twisting black to black and red to red.
Step 8 – After soldering them together and heating the heat shrink, I connected the white connector back to the transmitter pcb.
Step 9 – I ran the black servo connector back through the battery housing and screwed the unit back together.
Step 10 – When I connected the servo connector to the LiPo battery, I made sure the black wires lined up and the red wires lined up.
Step 11 – The LiPo fit securely into the battery compartment.
Step 12 – Finally, I tested the the transmitter by turning it on and seeing the green light on the front.
It works really well and I haven’t had to recharge it yet. The transmitter led light will go from green to yellow to red before the battery runs out. When I see it goin to yellow I will probably recharge the LiPo.