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  Gens ace 520mah 2s and 3s Lipo battery Reviews.
Posted by: vicky - 05-06-2017, 02:54 AM - Forum: General Discussion - Electric - No Replies

Tattu GENS ACE 520mah 30C / 60C 2s 7.4v & 3s 11.1V are one of the best quality LIPO that we can buy for mini drones between 70-120 size. GENS ACE also is manufacturing well knowed batteries Tattu which are one of the best on the market like SLS or Bonka. These high class lipo are not a joke, it provides the best power I ever seen, if you never try it then do it & you will never back to old ones. 

Box & Store voltage
Gens ACE batteries will come well packed:
[Image: Box-Store-voltage.jpg]
Also storage voltage is on great level when we check them out of the box.
[Image: out-of-box.jpg]
They looks delicious
Batteries got ling JST cable and looks really good, this batteries are really good shit because even power cable has extra heat shrink to prevent damage.
[Image: Gens-Ace-Tattu-520mah-2s-3s.jpg]

Discharge rate & Capacity & Cycles

If Gens Ace / Tattu wrote down that battery got 30/60C then this nuber are true, at some chinese or turnigy batteries we can find 50-100C but in most acses these batteries can’t even reach half of this rate … . OK, let’s do some math , to know what is dicharge rate we have to mutiple capacity 520 by discharge rate 30C and the result is  15 600mAContinous discharge rate is 520mah(0,52A) x 30C = 15600mA ( 15,6A ) , burst is 60c so 31,2A  which is Super score because mini drones in most cases can’t take more than 25A .These batteries are BEAST, I been able to pump in 565mah ! ( from 3.2V to 4.2 ) . Ofcourse this is nothing new because usually in these batteries capacity is higher than showed on label.Cycle life span should be not less than 200 if you will charge these batteries under 1C , best one will 0,5C.

Size and weight

Weight for 2s GENS ACE 520mah is only 28g which is great score compare to capacity and discharge rate, while 3s GENS ACE 520mah is literally a fat cow ( 44grams ).
[Image: Size-and-weight.jpg]
Size for 2s is 24x15x45mm & for 3s is 24x22x45mm .
Here you can see a size difference:
 [Image: size-difference.jpg]
Usage & flight test
2s GENS ACE 520mah works delicious, drone has good punch but still BOLT battery is mouch powerful to go due to Super high discharge rate 65-130C.

3s GENS ACE 520mah has really great punch BUT is way too heavy. 44grams is too much for small drones so most of extra energy is used to hover and just a bit for a bit more noticable fun. So best choice will be 3s 300mah and at least 45/90c but good luck to find it … . If you still want more power today then buy BOLD batteries from turnigy with Unholy C rating 65-130.

2s and 3s GENS ACE 520mah have different price, if you have interesting in 520mAh 2s lipo and 520mAh 3s lipo battery, you can chick it: http://www.genstattu.com.  so as you see price is low compare to quality.

Source: http://www.genstattu.com/blog/gens-ace-5...ng-drones/

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  Gens ACE Tattu 2s 520mah Review
Posted by: vicky - 05-06-2017, 02:32 AM - Forum: Video - Replies (1)

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Posted by: vicky - 05-02-2017, 03:37 AM - Forum: Gens ace & Tattu Battery - No Replies

Car jump starters are nothing new. When your car starter problems, storage battery damage or under the condition of cold weather lead to the car can not normal start, the jump starter can solve them. Today recommend a new product and top best jump starter on genstattu.com.

Tattu 12000mAh Jump Starter Specifications:

Power: 400A Peak 12v
Capacity: 12000mAh
Vehicle: 3.5L Gas and 2L Diesel
Input: 15V, 1A
Output: 12V/8A, 5V/1A , 5V/2A
USB Output: 5V - 2A
Charge Mode: CC/CV 15V-1A
Start Current: 270A
Peak Current: 400A
[Image: Tattu_portable_400A_Peak_12v_12000mah_au..._bank_.jpg]
Tattu JST1 12000mAh 12V 400A Peak Car Jump Starter Features:

A. Portable Power Supply: Instantly jump start your vehicle (up to 3.5L gas or 2L diesel, 12V engines)
B. 12V/(Max 8A) USB Outputs: The "12V/8A Output" will power your ISDT charger, Notebook, Cigarette lighter (Included) and even portable car accessories like inflators & car refrigerators
C. One Key Storage
D. LED Light: Tattu JST1 has a useful LED Light with three different modes: Normal, Strobe, SOS.
E. Long Standby Time: 3-6 months
F. Smart Safety: Over charging protection, Current overuse protection, Over voltage protection, Over current protectionCompatible vehiclesCars, Dirt bikes, ATV/ATC, Motorcycles, Trucks, SUVs, Boats, Jet Ski, etc
Compatible Mobile phone: Iphone, Samsung, HTC, Nokia, Motorola, Sony etc.
ISDT, Tablets & Readers, Cell & smallphones, Gopros & Cameras, Handheld Games, GPS and More

If you interesting in Tattu 12000mAh 12v jump starter chick it:

Source: http://www.genstattu.com/blog/top-best-1...tattu-com/

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  Genstattu all popular batteries are IN STOCK !!!
Posted by: vicky - 04-28-2017, 08:27 AM - Forum: Gens ace & Tattu Battery - No Replies

Good news before weekend, big batch of new Gens ace back to stock. All the popular ones,ALL!!!!

More details check: www.genstattu.com
[Image: 1493368047_NLqQNnnj0BajPEJ.jpg][Image: 1493368053_DfpY5GvAgXf9aAr.jpg][Image: 1493368059_BvvmuyLu2FXRrye.jpg]

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  Simple Battery Measuring Question
Posted by: betty - 04-25-2017, 10:03 AM - Forum: Drone/UAV Battery - No Replies

I've read a few posts where flyers "test" their battery in between flight to ensure the power level doesn't drop too low (to extend the overall life of the battery).

If this is true, what are people using to test the current level of their power?

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  What parts need to prepare for DIY quadcopter?
Posted by: Gade J.M - 04-25-2017, 09:07 AM - Forum: FPV/Drone/UAV - Replies (2)

What parts need to prepare for DIY quadcopter?

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  Only $258 for Wingsland S6 Drone Outdoor Edition...
Posted by: vicky - 04-25-2017, 06:35 AM - Forum: Gens ace & Tattu Battery - Replies (1)

Only $258.00 ... Wingsland S6 drone outdoor Edition... Did you try it?
[Image: 1493102067_KA06bq7KoTMOZt0.jpg]

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  Gens ace $ Tattu at hobby Expo China 2017
Posted by: vicky - 04-24-2017, 01:28 AM - Forum: Gens ace & Tattu Battery - No Replies

The 18th annual China international model Expo in 2017, the expo sponsored by China Association of Foreign Trade and Economic Cooperation Enterprises, and exhibition in 21st to 23rd April held in Beijing Exhibition center, exhibition hall covers an area of 26,830 square meters. Gens ace and Tattu attend this hobby Expo China 2017 at Hall 12# B06, welcome. Let us to appreciate the photos.[Image: 2.jpg][Image: 1.jpg] [Image: 3.jpg] [Image: 5.jpg] [Image: 4.jpg]
Source: http://www.genstattu.com/blog/gens-ace-a...hina-2017/

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  Lipo battery pack construction
Posted by: vicky - 04-20-2017, 01:48 AM - Forum: General Discussion - Electric - No Replies

LiPo is a short way of saying Lithium Polymer batteries, Lipo batteries are packaged generally in prismatic pouch made of some plastic polymers. These batteries are known for their exceptional "boost discharge capabilities". Lithium polymer batteries are labeled nnC where nn is a number. For example a 1000mAH Lipo battery with 50C label is capable of supplying 50 Amperes of current for a fixed time. Lipo is lighter in weight and hence is more energy dense than Lithium Ion batteries. You will find these batteries in toys where weight is a constraint e.g. flying toys for kids, toy quad-copters, heli, airplanes etc. But what is the basic construction of a LiPo battery? The lipo battery construction is as follows:
  [Image: lipo-battery-pack-construction.jpg]
 Anode: aluminum foil current collector. Metal oxide active material (NMC, NCA, LCO, LFP). Binder (PVDF - Polyvinyladine Fluoride). Conductive carbon (Acetylene black, Vulcan , graphite )
 Cathode: copper current collector. Graphite active material. Binder (PVDF, or CMC/SBR -- carboxymethyl cellulose and styrene butadiene rubber). Conductive carbon.
 Separator: polypropylene film, ionically conductive but electrically insulating, e.g. Celgard
 Electrolyte: carbonate solvents including ethylene carbonate (EC), dimethyl carbonate (DMC), diethyl carbonate (DEC), propylene carbonate (PC). Lithium salt, eg lithium hexafluorophosphate (LiPF6)

 Pouch material: aluminum with polymer coating.

 Tabs: aluminum cathode tab, nickel anode tab

 Construction: double sided anode and cathode sheets are stacked and wrapped in separator, sometimes in Z-fold pattern. Anode and cathode Electrode stack tabs are ultrasonically welded together, placing them in series. Anode and cathode tabs are further welded to external tabs (Al or Ni, see above). Welded stack is packaged in 3-side sealed pouch, filled with electrolyte, then 4th side is sealed in vacuum pouch step.
Source: http://www.genstattu.com/blog/what-is-li...struction/

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