Frsky QX7 Battery Holder Tray with Balance Charge capability

thingiverse

A reinterpretation of the original design incorporates elements that support balance charging, enabling users to charge 18650 batteries directly within the case or even through the transmitter. Users can also integrate an Xt30 and carve a notch into the battery door to route power leads out and power a Crossfire module. Instructions for assembling the case are taken from the original designer's description, with one exception: adding balancing leads requires soldering, which is left up to the user since improper wiring could have severe consequences. It's essential to do thorough research before attempting this modification. WARNING: Always verify your transmitter's rated input voltage. Although older Qx7 models can handle up to 15v, newer versions are limited to 8.4v. This holder provides 12.6v from 3- 4.2v cells. FROM ORIGINAL DESIGN: The Taranis QX7 battery casing/tray is designed for 3x AA 18650 rechargeable Li-ion batteries. The QX7 can handle 3s without any issues, so I aimed to create a higher capacity battery pack. Remove the battery terminals and wiring from the stock AA battery casing/tray for use in this case; no soldering is required. Some 18650 AA batteries come with flat + terminals; users can utilize these by adding a small amount of solder to the + terminals in the completed casing/tray. Print the design using rigid filament.