Why do we choose lipo battery for our quadcopters?

Lipo, the full name is lithium polymer, today they are used in many places like in mobile phones, powerbanks and quadcopters. But why are quadcopters using lipo battery? Before answer this question, we should know What does quadcopter need and what’s the lipo battery?

Quadcopter has got more and more popular; quadcopter as a drone are also used in aerial photography and FPV Racing, so most aerial photography pilots hope their quadcopters can fly longer and FPV racers hope their quadcopter can fly fast. But a few years ago, all that was available to Radio Control enthusiasts were gasoline powered helicopters is the availability of LiPo batteries. Quadcopter is an incredibly inefficient device. If you want to fly longer, you need a larger battery, so you will find it is very funny: the heavier a quadcopter is, the more powerful its motors need to be. The more powerful the motors, the bigger batteries you need, the bigger batteries, the heavier – it goes in a circle, getting worse, each time around. the formula just doesn’t work unless you have a battery technology that is light enough.

Prior to LiPo batteries, there was no practical battery technology that could allow you to close the loop on that equation. LiPo (and LiIon) batteries have a very high energy to weight ratio, and also (important) a very high discharge rate.

The technology is such an improvement over all previous technologies (in these parameters) that the entire paradigm has turned. Now the sky is the limit and designers can think outside the box. Things like, how big a motor to lift a man, how big a battery to run it – yup – it’s doable. Quadcopter so you can “”ride on”! It means for the same weight of the batteries of different types say Lipo and lion (lithim ion) Lipo can store more power over other’s

So as in quadcopter weight is the greatest factor as it affects flight time, maneuverability and many other so minimizing the weight is the greatest concern and here the Lipo battery helps in doing that making it a great choice.

Also you need a high discharge rate as quadcopter motor needs a high current during flying Lipo have amazing discharge rate.

Source: http://rcfpvplane.com/why-is-a-lipo-battery-used-in-a-quadcopter/

Gens Ace Charging Safeguard Lipo Battery Charging Protector

The Gens Ace Charging Safeguard is announced to be a lipo battery charging protector, these lipo battery charging protectors are under production, you will buy it in 1~2months, now you can know more about this new product first.

Overview:

Gens Ace Charging Safeguard is designed for 2S-6S (nominal voltage 3.7V/cell) Lithium Polymer battery pack.

Specs:

• Net Weight: 88g;
• Dimensions: 88mm Length x 65mm Width x 20mm Height
• Input Volatge: DC5V-30V
• Input Current: Max 30A
• Output Volatge: DC5V-25.8V
• Output Current: Max 30A

Features:

It has these seven features:

• Over-voltage Protection: When charging, if the Charging Safeguard detects that the voltage of a single cell is 4.3V or over and the voltage lasts more than 2 seconds, it will automatically stop charging and the Yellow LED will activate. Please disconnect and reconnect to resume use of the Charging Safeguard.
• Over-current Protection: When charging, if the Charging Safeguard detects that the charging current is over 30A and the current lasts more than 1 second, it will automatically stop charging and Yellow LED will activate. Please disconnect and reconnect to resume use of the Charging Safeguard.
• High Temperature Protection: When charging, if the internal temperature of the Charging Safeguard is over 70℃, it will automatically stop charging and the yellow LED will activate. To resume charging, please cool down the Charging Safeguard and battery if required. Please disconnect and reconnect the battery to resume charging.
• Battery Checking: When charging, if the voltage of any single cell is lower than 2.5V. The Red LED will start blinking and the charging will be stopped. The voltage of the battery is dangerously low. DO NOT use this battery pack under any circumstances. Safely and properly dispose of this damaged battery pack immediately.
• Abnormal Detection: If the Safeguard detects anything abnormal, the Red LED will activate which means the Safeguard is malfunctioning. Please contact info@gensace.com for assistance.
• Auto Sleep Mode: When connecting the Charging Safeguard to the battery, the indicator LED will deactivate and the Safeguard will automatically start Sleep Mode if charging does not begin within 30 minutes. Please disconnect and reconnect the battery to exit Sleep Mode.
• LED Indicator:  If the Green LED is active, the Charging Safeguard works properly.

                              If the Yellow LED is active, the protection feature is activated.

                              If the Red LED is active, the Charging Safeguard is malfunctioning

                              If the Red Led is blinking, the battery pack is defective and unable to be charged.

HOW TO USE

Connect the main lead and balance connector of the BATTERY to the output of Safeguard. If the Green LED is active, then connect the main lead and balance connector of the CHARGER to the input of the Safeguard. Make sure the connections and indicator LED are correct then begin charging the battery. If there are any abnormalities please stop charging immediately. To resume charging, please troubleshoot all problems and restart the charging procedure.

ATTENTION

You’d better be attention to these when you are using Gens Ace Charging Safeguard.

• DO NOT reverse connector polarity.
• DO NOT short any connectors together.
• DO NOT leave this product unattended while charging. Stop using the Safeguard      if you find anything abnormal.
• DO NOT charge any battery that is not in the correct voltage range.
• USE with Lithium polymer batteries ONLY. DO NOT use any other battery                    chemistry with Charging Safeguard.
• Keep Charging Safeguard away from dust, humidity, rain and heat sources. Avoid      direct sunlight and strong vibrations.

Gens Ace Charging Safeguard is a very good lipo battery charging protector, it is very useful for our lipo battery, extend our lipo batteries’ life, we will save much money. It is very worth to buy. Because these Gens Ace Charging Safeguard lipo battery charging protectors are under production, I don’t know the detail time to buy it , you can follow this Facebook Page or Gens Ace official site to know more information:

Facebook Page: https://www.facebook.com/TattuBattery/

                           https://www.facebook.com/GensAceGlobal/

Facebook Group: https://www.facebook.com/groups/Tattufpv/

Official site: 

https://www.genstattu.com/ga-charging-safeguard-6s-charger-protector.html

Tattu 2305 2450KV Brushless Quadcopter Motors Review

Tattu has been an active member of the miniquad community since the early days, but this is their first foray into the motor world. Tattu 2305 2450KV Brushless Motors are made for FPV Racing drone. Each quadcopter motor has been carefully balanced and tested in the factory. Tattu 2305 2450KV motors are mainly suitable for 180-250mm quadcopter frame, the compatible propeller sizes are 5040 / 5045 two-blade or three-blade propeller, they made for FPV Racing drone. This is an interesting motor as a first entry as it bucks a few of the current trends in the dominant motors on the market.

There is a test about this motor by Miniquadtestbench.

Review:

• The stator size is right in the middle at 2305, a bit smaller than the popular large motors, and a bit larger than the popular small motors.
• The weight is right in the middle as well, coming in at just under 30g. This seems to be a motor of the middle ground on just about every front, with a fairly large air gap, square magnets, and multi-strand windings.
• The shaft is retained with a c-clip, but it does retain the stronger single-piece hollow shaft design.
• The machining quality and smoothness of this motor are top notch, with excellent finishing and no play.

Results

The results here are reflective of the middle ground this motor seems to occupy; very solid performance, especially for the smaller stator size and conservative kV.  The kV tested a tad lower than advertised coming in around 2390kv. One of the most noticable things about these results is the relatively flat performance across the range of props, only showing about 100g difference between the lighter 5″ props and the heaviest 5″ props. This is indicative of the larger air gap and shorter stator, where the lower torque loaded props respond well to the kV and the heavier loaded props bog the motor down a bit. That being said the performance here is very comfortably in the middle range, easily clearling 1300g on the mid to heavy load props, and staying around the 1200g mark even on the light props. It is also interesting to note that this motor barely got out of the low 30A range even on the heaviest props. It seems clear this motor was targeted towards that middle space of the average user, a pilot looking for a mid-weight motor that is usable on a broad range of props and a broad range of flying styles without being over-powered or killing the battery. This seems to have it the nail on the head for a general use, broad application motor that just about any pilot can find a use for.

Tattu 2305 2450kv Test Full Results

Tested KV: 2390kv

Weight: 29.7g

Stator W: 23mm

Stator H: 5mm

Test Environment:

XRotor 40A ESC

Timing: Med-high

Dither: 7

PWM: Damped Light

Venom 60A Power Supply

2Farad Caps x2 in Series

Custom Datalogger

TI TivaC Launchpad

Allegro ACS758-200B

Voltage Divider

EagleTree eRPM Sensor

Custom Thrust Stand w/ HX711

4 ms logging rate

Atmospheric Data (Typical)

Barometric pressure: 29-30 in

Ambient Temperature: 70-74 deg F

Humidity: 50-60%

Tattu R-Line 850mAh 95C 4S Racing Drone Battery

As we know, Tattu R-Line battery is specifically designed for professional FPV racing competitions, they are more powerful than any graphine battery. higher capacity, lower internal resistance and lower landing temperatures won the pilots’ love. Now Tattu r-line series released 850mAh 4s 95c racing drone battery, light weight and wonderful. Let us see.

Tattu R-Line 850mAh 14.8V 95C 4S1P Lipo Battery Pack with XT30 plug has full capacity and discharge rate. It is a high discharge rate FPV racing lipo battery. The 95C gives you enough power under load. It is very compact in size and very light in weight. Works perfect with your Multirotor FPV from size 100 to 180.

Specifications:

Minimum Capacity: 850mAh

Configuration: 4S1P / 14.8V / 4Cells

Discharge Rate: 95C

Max Burst discharge Rate: 190C

Net Weight(±20g): 104g

Dimensions: 61mm Length x 31mm Width x 31.5mm Height

Charge Plug: JST-XHR-5P

Discharge Plug: XT30

Compatible with:

Multirotor FPV from size 100 to 180.

It is in stock and shop here: https://www.genstattu.com/ta-rl-95c-850-4s1p-xt30.html 

Xiaomi mi drone 4K flight and review

I have waited a long time to buy this Xiaomi mi drone 4K camera drone, and now I finally get it. When I got my Xiaomi drone, I’m very excited and can’t wait to open it.

Look, this is Xiaomi mi drone overview, it looks very beautiful;

This is the Xiao mi mi drone 4K camera, it is said its camera is the most expensive and important, I should be carefully with it, the 4K camera.

Remote Control:

These are the simple introduce about Xiaomi mi drone 4K, and next I decided to fly it. Here are some Xiaomi mi drone flying photos:

This flight feel very well, Xiaomi drone is easy to flight, it is very suitable for beginners(I’m a beginner), and its price is not expensive, just need $430, Comparing to other brand of drones, the price of xiaomi 4k drone is very affordable. Following is the comparison chart:

• As you can see, 4K drones in other brands are selling for at least $589, which makes Xiaomi a very reasonable price drone among the competitors.
• And Xiaomi drone has many magic features:
• Choose a point and set desired hover height and radius. Mi Drone will automatically circle around an object, capturing beautiful shots of the object.
• Set a route so images and footage captured will be uninterrupted and beautiful.
• Set a location on the map within the app, and Mi Drone automatically flies towards the pinned location.
• Mi Drone calculates power required to return home and automatically returns when battery is low.
• Once Mi Drone disconnects from the remote, it returns home automatically. Should an accident occur during the return trip, the Mi Drone can be easily located using its GPS real-time tracking System.
• Automatically stops and hovers when approaching no-fly zone
• When Mi Drone approaches a no-fly zone, it automatically stops, hovers, and sends out a smart alert to prevent any accidents from occuring.

Some tips about Xiaomi mi drone 4K:

(1) You need to fly it in an open area and with a good gps signal.

(2) When you start flying your drone, make sure that the back of your drone is face to you, not the forward. In this way, you are easy to figure out the direction of it.

(3) When the drone is too far away or in a place that lost connection with your remote, the drone may switch to self control mode, which is very dangerous as it may drift everywhere till crashed. Therefore huge empty space is always recommended for your drone flying.

(4) When you at a zone with less GPS signals, you need to let antenna of remote control to face the drone.

(5) In case of emergency, press power and take off key at the same time, the drone will stop immediately and fall down in crashed.

Xiaomi mi drone 4K camera WIFI drone review

Xiaomi Mi drone 4K, is produced by a Chinese technology company which named Xiuaomi; Xiaomi mi drone 4K is an easy to learn, high resolution videos, safe and convenient 4K camera WIFI quadcopter, it is very suitable for beginners. As we know, Xiaomi has released a Xiaomi mi drone 1080P camera drone in the past, full HD is not bad, but 4K camera drone has became more and more popular, so they wanted 4K resolution. There were made over 400 optimizations and 5 major hardware updates in comparison to the 1080p version, this quadcopter is promised to provide great performance.It’s priced at $430 on GensTattu(you can click here to buy with free shipping on the US). So we decided to get our hands on it and get acquainted with the key features of the Xiaomi Mi Drone 4K.

Xiaomi Mi Drone 4K Features

• Lens FOV: 104 degrees
• Video resolution: 3840×2160p 30 fps / 2560×1440p 30 fps / 1920×1080p 100/60/30 fps [MP4]
• Photo resolution: up to 4000×3000 4: 3 [JPEG]
• Battery: 5100mAh / 77.52Wh
• Flight time: 27 minutes
• Controlled rotation range: Tilt: —90 ° ~ 0 °
• Maximum flight speed: 18 m/s
• Lifting speed: Max climbing speed of 6 m/s (Novice Mode – 4 m/s); Lowering speed of 1.5 m/s
• Hovering Accuracy: Vertical: + / – 0.1m (working in the ultrasonic range), + / – 0.5m Horizontal: + / – 1.5 m
• Wheelbase: 434 mm
• Propeller length: 25.4 cm
• Weight: 1376g

Xiaomi Mi Drone 4K Box Content

This quadcopter comes in a white package. The drone is dissembled. So you have to install everything yourself.

Inside the box we can find:

• 1 x Mi Drone 4K
• 1 x 5100mAh battery
• 1 x Transmitter
• 1 x 4K camera
• 4 x propellers
• 4 x protection ring
• 2 x landing legs
• 1 x cable
• 1 x USB charging cable
• 1 x Screwdriver
• 1 x Instruction manual
• 1 x Adapter
• 1 x USB flash memory stick.

Package Box Overview:

Xiaomi Mi Drone 4K Review

In comparison to the 1080p version the Xiaomi Mi Drone 4K uses two sets of independent heterogeneous IMU and compass sensor. Such a combination is met found rarely on UAVs. It helps the drone in providing better flight real-time monitoring by merging data from both sensors.

(Article Source: http://www.rcdronefpv.com/xiaomi-mi-drone-4k-camera-drone-review/)

This drone uses 1.2mm ultra-thin lightweight body design process. It weighs only 670 grams, which can be considered as a record for such kind drones. So unlike many other quadcopters the Mi Drone 4K looks more stylish, but this change doesn’t affect the battery and the lifetime. As you guess, the improvements refer to the battery and lifetime as well. Thanks to 5100mAh battery (actually there are four separate 4.35V high voltage lithium polymer batteries) it can provide up to 26 minutes of continuous flight time.

The Xiaomi Mi Drone 4K comes with a 12MP Sony back-illuminated sensor, which is capable of recording videos at 3840 x 2160 pixels resolution. Moreover, it saves the files in RAW format. This product is based on new TDMA technology, which means it provides an anti-jamming performance significantly stronger than the traditional Wi-Fi scheme. Moreover, the Xiaomi Mi Drone 4K now supports transmission distance from the original 1km to 4km.

This camera is packed with a 3-axis brushless self-stabilizing pan, built-in 3-axis gyroscope, 3-axis accelerometer and 3-axis brushless motor driver. So it is capable of providing up to 2000 times better data acquisition and operation compensation.

Every time we talk about this drone we mention there have been made more than 400 software improvements. But this statement doesn’t mean anything to a novice. In other words, Xiaomi has developed a special app allowing to control the Mi Drone UAV easily. You can generate routes, set up automatic takeoffs and landings as well as a destination, flying around a given point and automatic return.

As for security, when the battery power is too low, the drone returns to the starting point. The same will be implemented if the connection is suddenly lost. Finally, you can track the location of the Xiaomi Mi Drone 4K in real time by GPS.