Battle of the Toy Quads: UDI U818A-1 vs XK Alien X250

Product Review: UDI U818A-1 Upgraded Drone. The XK Alien X250. Battle of the Toy Quads: XK Alien X250 vs The New UDI U818A-1. UDI U818A with a New HD camera and other features listed below. The XK Alien X250 drone is a fun flyer, great handling for teenagers and Adults! The UDI U818A-1 and The XK Alien X250 drone wont have to be registered with the FAA.
UDi U818A-1 Product Link:
UDi U818A-1 Extra Batteries:
Newest IOC System
The best feature for beginner! It eliminates the need to adjust the position of quadcopter before flying it. Even in mild winds, around 10 mph or less, the UDI U818A-1 HD flies strong, ultra-stable and reliable.
It also include a 2 megapixels camera with a resolution up to 1280 x 720 and 30 FPS for quality videos.
Important Note:
• The motors of the quadcopter wear naturally and inevitably the longer you fly it due to the heat generated.
• Please make sure to cool down the motors and board circuit after 2 or 3 flights to extend their durability.
What You Receive:
1 x U818A-1 HD RC Quadcopter
1 x 2.4GHz Transmitter with LCD Display (4 x AA batteries NOT INCLUDED)
1 x Carrying Case (to keep your new toys safe)
3 x 3.7V 500mAh Li-Po Batteries (to extend your fun play time)
1 x 4GB Micro SD Card (to store all your videos)
1 x USB Card Reader (to plug the SD card to your computer)
1 x Battery Charger (to charge your Li-Po Batteries)
4 x Extra Blades (in event of crash)
1 x User Manual
Satisfaction Guaranteed
• Potensic Top-Notch Quality Control
• Easy-to-Reach Customer Support: via Amazon or via email (enclosed with the product)
No FAA Registration: this quadcopter doesn't require a FAA registration - Excellent for beginners and hobby users.
High Quality Camera: enjoy good quality images and videos during flight with its 2 megapixels camera, resolution up to 1280 x 720 and 30 FPS.
Helpful User group for information on the UDi U818A-1:
XK Alien X250 Quad-Copter 250 Racer (US plug) (Mode 2) (RTF)
The XK Alien X250 Alien is a great looking, agile, lightweight racer. Super easy setup that will have you flying straight out of the box. The fun doesn’t stop there with a one key to roll function getting you rockin and rolling.
Features:
• High precision air pressure needle to fix height
• Fail safe function
• One key to roll
• Control distance is more than 300m
• Low voltage alarm, all LED’s flash
• Colorful and bright LED
Specs:
Motor: 8520 coreless
Battery: 3.7V 780mAh 20C LiPoly
Wheelbase: 240mm
Operating Frequency: 2.4GHz
Flight time: 8-12 mins
Charger Time: 30-60 mins
Control distance: 300m
Size: 194x194x61mm
Flying weight: 110g
Includes:
1 x XK Alien X250 RC Quadcopter
1 x Transmitter
1 x Battery
1 x Charger with US Plug
2 x CW Propellers
2 x CCW Propellers
1 x Screwdriver
1 x Manual
Requires:
4 x “AA” Batteries for transmitter
XK Alien X250:
Extra Batteries:
Spec.
Capacity: 750mAh
Voltage: 1s / 3.7V
Discharge: 35C Constant / 70C Bursts
Weight: 19.5g
Dimensions: 43mm x 24 x 9.5mm
Balance Plug: N/A
Discharge Plug: JST + Walkera
Advantages over traditional Lipoly batteries;
• Power density reaches 7.5 kw/kg.
• Less Voltage sag during high rate discharge, giving more power under load.
• Internal impedance can reach as low as 1.2mO compared to that of 3mO of a standard Lipoly.
• Greater thermal control, pack usually doesn’t exceed 60degC
• Swelling during heavy load doesn’t exceed 5%, compared to 15% of a normal Lipoly.
• Higher capacity during heavy discharge. More than 90% at 100% C rate.
• Fast charge capable, up to 15C on some batteries.
• Longer Cycle Life, almost double that of standard lipoly technology.
The nano-core technology in lithium ion batteries is the application of nanometer conductive additives. The nanometer conductive additives form ultra-strong electron-conducting networks in the electrodes which can increase electronic conductivity. These additives create the ability for inhibition in the carrier liquid to supply more ion channels.
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