Frsky QX7 Battery Holder Tray with Balance Charge capability

thingiverse

A remix of the original design that I added elements into the design that will accommodate balance leads so you can charge the 18650 batteries in the case or even in the transmitter. You can even add an Xt30 and cut a notch in the battery door to route the power leads out and power a Crossfire module. The instructions to assemble the case are described below that are copied from the original designer. The only exception will be the addition of adding balancing leads which will require soldering. I will leave that up to you since wiring it up wrong could have a bad outcome. Do your homework and know what you are supposed to do before attempting. WARNING: Be sure to check your rated input voltage. The older Qx7 transmitters can handle up to 15v but it seems like the newer models are limited to 8.4v. This holder will provide 12.6v from 3- 4.2v cells. FROM ORIGINAL DESIGN: Taranis QX7 battery casing/tray, for 3x AA 18650 rechargeable Li-ion batteries. The QX7 can accept 3s without issues so I wanted a higher capacity battery pack. Strip out the battery terminals and wiring found in the stock AA battery casing/tray to use in this casing, no soldering needed. Some 18650 AA batteries come with flat + terminals, you can use these by adding a touch of solder to the + terminals in the completed casing/tray. Print in rigid filament.