Cheerson CX-20 Quadcopter | High Altitude Range Test

Testing the altitude capabilities of the Cheerson CX-20 Quadcopter. I took off from the ground and initiated full climb until about halfway through the battery life (approx 5 mins) before hitting the RTL switch to bring it gracefully back down to right where it took off from.
I was pretty pleased with the performance considering this is just the stock CX-20, with added weight from the gimbal, GoPro, GPS tracker, GPS logger and FPV kit. I had full FPV for the duration of the flight from a cheap 200mw FPV kit. I imagine without kit it could go even higher.
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Technical Details
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Quadcopter: Cheerson CX-20 (Quanum Nova)
Gimbal: Walkera G-2D
Camera: GoPro Hero 4 Silver
Battery: BlackMagic 2700mAh
Extra kit: FPV kit, GPS logger, GPS GSM Tracker