Review: XK Alien X250 Drone - This is the review for the Hobbyking.com XK Alien X250. i purchased the XK Alien X250 from Hobbyking.com, the XK Alien X250 was not given to me for a review by Hobbyking.com. the XK Alien X250 will fly in the Battle of the Toy Quads this weekend. the XK Alien X250 is a sleek looking, sturdy feeling toy quad that does not come with FPV, but it appears it can be added by buying ala carte FPV items.
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.
Safety features include automatic landing on signal loss and a high precision air pressure needle to adjust the flying height. Colorful and bright LED’s make the quad easy to see and orientate when flying in during the day and at night.
What more can you ask for from a quad that comes straight from the box with everything you need to fly; 2.4GHz Transmitter, LiPoly battery, charger and screwdriver. Even a few spare blades.
The XK Alien X250 features a stylish plastic molded body that gives a cool presence in the air.
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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