How to choose RC lipo battery?

With the development of participation in playing aeromodelling, hobbyist has paid more and more attention on the selection of the RC lipo battery. For the selection of the RC lipo battery, it carries on the explanation mainly from two aspects of battery's voltage and capacity:

1. Voltage of battery

Its voltage should be the same or a bit higher than the voltage of electric motor.

2. Capacity of battery

Unit of the battery capacity is AH, and there is the larger capacity and the larger size under the same voltage. For example, the electric motor has the working current of 10A and the voltage of 12V, which is 10A*12V= 120W. If equipped with the 12V/10AH batteries, the electric motor can work for an hour. If the rated working current of the 120W/12V DC motor is about 10A, its battery capacity is 40Wh when it works as the maximum power of 120W for 20 minutes, and the capacity required for the battery pack is about 12V4Ah, and the equipped lithium battery is power-type battery.

Structure of lithium battery

Usually, lithium batteries have two common types of shape, including cylinder shape and square shape. It is used the helical coiling structure as the internal of battery, and made intervals between the positive and negative electrodes by a kind of polyethylene film isolation material with high intricacy and strong permeability. The positive electrode is the current collector composed of lithium cobalt oxide and aluminum foil, and the negative electrode is the current collector composed of graphitized carbon material and copper foil. Battery is filled with organic electrolyte solution, and installed with safety valve and PTC components, in order to protect the battery from damage in abnormal conditions and when the output is short-circuited.

Why is lithium battery so popular?

1. High voltage and light weight features of lithium battery

The average voltage of a single battery can reach 3.7V or 3.2V. If customer requires the battery with the qualified voltage, lithium battery is the best choice as it can be composed of a lithium battery pack easily and provide convenient and efficient access to improve the voltage of lithium battery.

2. Compared with other battery, lithium battery has higher capacity and density

Lipo battery has high energy storage density, at present, density of the common used battery can reach 450-620Wh/kg, which is 5-7 times higher than the lead-acid battery. In addition, pollution is one of the most important problems considered when people prefer to use lithium battery.

3. Large capacity and long life

The weight of a single lithium battery is about 5-6 times of the lead-acid battery. Although there are less differences in weight between the lithium battery and polymer lithium battery, people prefer to choose the lithium battery as its capacity and life.

The service life of a single lithium battery can be above 6 years and even 9 years if nothing goes wrong. The normal quantity of use is more than 1000 times, if there are no accidents, it can be used beyond 1500 times.

4. Low self-discharge and no memory effect

Lithium battery is equipped with protection plate during the production, which can make the lithium battery have an effect of over-charge and discharge. As lithium batteries have high power tolerance, lithium batteries used for electric vehicle can produce high-performance charge and discharge of 15-30C for the high-strength acceleration performance in starting of the electric vehicle.
source: http://www.genstattu.com/blog/how-to-choose-rc-lipo-battery/

XiaoMi drone and DJI Phantom 4, which one do you like better ?

Neither Xiao mi or Dji, both of them are come from China, In recent days, Xiaomi unveils its drones:4k and 1080p. As we know Xiaomi is a famous smart Mobile phone manufacturer in China, but DJI is the largest UAV company in the world, now let me have a Depth comparison about Xiaomi 4k and DJI Phantom 4.

Aircraft

Here is DJI Phantom 4
Weight (including battery and propellers)        1380 g
Max Ascent Speed        6 m/s (Sport mode)
Max Descent Speed        4 m/s (Sport mode)
Max Speed        20 m/s (Sport mode)
Max Service Ceiling Above Sea Level        19685 feet (6000 m)
Max Flight Time        Approx. 28 minutes
Operating Temperature        32° to 104° F (0° to 40° C)
GPS Mode        GPS / GLONASS
Hover Accuracy        Vertical:
+/- 0.1 m (when Vision Positioning is active) or +/-0.5 m
Horizontal:
+/- 0.3 m (when Vision Positioning is active) or +/-1.5 m
Diagonal Size (Excluding Propellers)        350 mm

Xiaomi 4K
Weight (including battery and propellers)        1387g
Max Ascent Speed        6 m/s (Sport mode)
Max Descent Speed        1.5 m/s (Sport mode)
Max Speed        18 m/s (Sport mode)
Max Service Ceiling Above Sea Level        2000m
Max Flight Time        Approx. 27 minutes
Operating Temperature        32° to 104° F (0° to 40° C)
GPS Mode        GPS / GLONASS
Diagonal Size (Excluding Propellers)        434 mm

Accounding this list, both of them are simliar in general, but DJI Phantom 4’s Max descent speed and mas service ceiling above sea leavel are batter than Xiaomi 4K,  From another way, we can see DJI Phantom 4 used 5350mah 4s lipo battery, and Xiaomi is 5000mah 3s lipo battery,too.
Camera
Sensor        1/2.3” (CMOS), Effective pixels:12.4 M
Lens        FOV 94° 20 mm (35 mm format equivalent) f/2.8, focus at ∞
ISO Range
100-3200 (video)
100-1600 (photo)
Shutter Speed        8s -1/8000s
Image Max Size        4000×3000

Maybe DJI Phantom 4 is batter than Xiaomi 4K, but on another way, xiaomi 4K’s price is lower than DJI Phantom 4, and Xiaomi is a newbie in Drones, it has a lot of loyal customers and  Xiaomi will have a great development. Xiaomi’s main markert is in China, but DJI is in the world. So I believe Xiaomi drones will get a huge market in China.

The best RC car lipo battery for sale

As the rc car lovers, should you know what the RC car lipo battery is best designed your RC car, and where to buy the RC car lipo battery which has high burst and high quality? Today we will recommend a better brand of RC lipo batteries - Gens ace & Tattu.

About Gens ace and Tattu.

Firstly, I will introduce you some basic information about Gens ace & Tattu. Tattu is the sister brand of Gens Ace. It is more focused on Drones/RC CAR/UAV battery pack and designed with high energy density and high discharge rate cells. It has highly reputation in the market with its stable performance.

RC car lipo batteries eventually get old and weak. Some of the more high-end electric RC cars don't come with batteries. But don't worry, Genstattu.com got every kind of RC car lipo battery you might ever possibly need. All of these are available at different voltages or discharge rate.

What the Gens ace Tattu lipo car battery suitable for?

The Gensace&Tattu lipo car batteries designed for professional 1/10 scale and 1/8 scale on road and off road car: Traxxas Slash, Emaxx, Bandit, Rustler version, HPI Strada XB 1/10 RTR Electric Buggy, Kyosho GP 4WD RACING TRUCK SC8, Revo, Fiesta, Boss 302 Mustang, Duratrax, Helion and so on, there is always one suitable for your RC car.
We are mainly concentrated in the RC remote control model of industry and sold it all over the world. All of them are high quality and the best high discharge rate batteries to the world. We believe that our shop will be a good choice for you choosing a suitable battery.

Then where to buy a better RC car lipo battery?

If you need lipo car battery, come to the genstattu.com, here is the right place. Tattu and Gens ace RC car lipo battery for sale is official online shop where has Local Service, Quality Assurance, Best Prices and Fastest Shipping. Free shipping over $49.99 in USA, Over $198 in Canada. http://www.genstattu.com/car-battery-lipo.html
source: http://www.genstattu.com/blog/the-best-rc-car-lipo-battery-for-sale/

Cheap Gens ace & Tattu RC Lipo Battery hot deals

For the pilots or drivers, we know that you are always in need of some RC Lipo batteries, so we set up the hot deals page with all hottest deals of Gens ace &Tattu in on page. And it's convenient RC hobbyist to choose cheap Gens ace &Tattu lipo battery on the official shop.

Let's take a look at some of the great offers we have picked out for you:
1. Gens ace 2200mAh 7.4V 25C 2S1P Lipo Battery Pack with Deans plug
http://www.genstattu.com/gens-ace-2200mah-7-4v-25c-2s1p-lipo-battery-pack-with-deans-plug.html
$14.66 $12.46
Sku: GA-B-25C-2200-2S1P-Deans
2200mAh 2s 7.4v lipo battery Designed for 70MM EDF rc plane, 450 helicopter, rc boat.
2. Gens ace 2200mAh 14.8V 25C 4S1P Lipo Battery Pack with Deans plug
http://www.genstattu.com/gens-ace-2200mah-14-8v-25c-4s1p-lipo-battery-pack-with-deans-plug.html
$29.30 $24.91
Sku: GA-B-25C-2200-4S1P-Deans
2200mAh 25C 4S lipo battery designed for 3D HobbyShop 48" foamy, F-16 64mm edf jet, 70mm edf F16, Freewing F-15, FPV etc.
3. Gens ace 5000mAh 14.8V 50C 4S1P Hardcase Lipo Battery14# with Deans plug
http://www.genstattu.com/gens-ace-5000mah-14-8v-50c-4s1p-hardcase-lipo-battery14-with-deans-plug.html
$78.59 $66.80
Sku: GA-B-50C-5000-4S1P-HardCase-14
5000mAh 50C 4S RC car lipo battery designed for 1/8 & 1/10 RC car model such as E Buggy and E Truggy Tekno EB48.3, Losi 8 4.0, Mugen MBX7R etc.
4. Gens ace 5000mAh 7.4V 50C 2S1P Hardcase Lipo Battery Pack 10# with 4.0mm Banana to Deans plug
http://www.genstattu.com/gens-ace-5000mah-7-4v-50c-2s1p-hardcase-lipo-battery-665.html
$36.99 $31.44
Sku: GA-B-50C-5000-2S1P-HardCase-10
5000mAh 50C 2s lipo car battery suited to the following models: 1/8 & 1/10 RC car model
And in addition to, For the individual customer, when order over $49.99 in USA, Over $198 in Canada we will provide the free shipping. More about hottest deals chick: http://www.genstattu.com/hotdeals
Source: http://www.genstattu.com/blog/cheap-gens-ace-tattu-rc-lipo-battery-hot-deals/

The best mini quad lipo batteries:Tattu 4s lipo battery

For most people,you may don't know who is Tattu, but if you had heard Gens Ace, you will know who is  Tattu. Tattu is the sister company of Gens Ace, produce high quality lipos for not only for our application of mini quads but also for large hover ships used for Aerial Photography.

Now I will tell you the Tattu 4s lipo battery, many mini quad lovers called it the best mini quad lipo battery. Gens Tattu is a Professional Battery manufacturers, and their batteries are for drones, cars and quads. Tattu 4s lipo batteries have many types, capacity are 450mah-22000mah, high Discharge rate. For most quad lovers, they like Tattu 1300mah 4s 75c lipo battery. These batteries are available in a wider range of capacities than most brands and cell counts, from 3s to 6s (for those of you who are crazy), and 1000 to 2200mAh. Most people think that these batteries perform well, especially the 75C rated packs. 

Tattu 1800mAh 75C 4S RC lipo battery Testing

I was sent one of the new Tattu 1800mah 75C 4S batteries to do a bit of testing. I've been flying it for a week or so and I have spent some time gathering data. Here is what I've found so far.
To give a bit of background, I am a multirotor pilot, and am primarily interested in miniquads. That being said the testing I've done applies universally. These high C rated batteries are useful beyond the bounds of multirotors into the world of 3D flying, and high performance aircraft.

Physical Characteristics

As with the Gens ace 2200mah I reviewed last month, my first impressions of this RC lipo battery are very positive. Gens ace/Tattu seem to use the same build techniques in both their lower discharge and higher discharge batteries. It has the same aluminum support that covers the battery and adds additional protection to the top and bottom of the battery. After a bit more research I have found that this actually provides compression during high discharge and according to research can significantly extend the life of the battery. Again, where the high current lines enter the battery casing they are re-enforced with additional heat shrink. The balance leads also come out the opposite side of the casing rather than the same side as the high current lines. In addition this battery has a plastic cover that extends over the balance lead cables, preventing stress on the cables when plugging and unplugging the balance cable. I will point out that on some chargers this can prevent the balance leads from fitting properly. Unlike the 2200mah, this battery came with XT60 connectors, which means no soldering for me. Battery dimensions actually exactly the same as the 2200mah 2S battery, and are accurate to the product description on the sellers website. The wight is just over 200g and the physical size is 105mm x 35mm x 25.4mm. Because of the aluminum plates the size is very consistent.

Tattu 1800mAh 75C 4S1P lipo battery pack with XT60 plug
Brand: Tattu
Capacity: 1800mAh
Voltage: 14.8V
Discharge Rate: 75C
Max Burst Discharge Rate: 150C
Configuration: 4S1P
Size: 105mm*35mm*25.4mm
Connector Type: XT-60
Balancer Connector Type: JST-XHR

Features:

1. Stable automatic stacking technology enables single cell capacities of 1800mAh.
2. The most strict single cell capacity, voltage, resistance, discharge curve matching process.
3. Superior Japan and Korea Lithium Polymer raw materials.
Tattu batteries provide high quality, reliable power for LRC Freestyle V1(270-296), CX Pro Quadcopter(228), ortex, Super Mini H Quad Power Train, drone and FPV etc.

Conclusions

My initial impressions of these batteries both in build quality and performance are very positive. Because of the very high C rating, it is hard to get an accurate picture of whether or not this battery can full fill a 75C (135A) current load, but given very few people have a setup that can draw that type of constant load, that's not something we can easily gauge. Since I haven't found a reliable method for testing internal resistance It's hard to get an objective measurement of true C rating. I will post an update as soon as I can test these on a more reliable tester. I can say up to 65A loads this battery performs excellently. I was also very impressed with how well it recovered from first time abuse.
The battery provides both solid performance and the extras in the build such as the reinforced cables and aluminum compression plates add up to a very nice battery. For those interested, the battery is available here:
http://www.genstattu.com/tattu-1800mah-75c-4s1p-lipo-battery-pack-with-xt60-plug.html
Video: https://www.youtube.com/watch?v=0Rh6_MfOFpA

Thanks for QuadMcFly review and video.