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显示标签为“LiPo Battery Packs”的博文。显示所有博文

2016年7月2日星期六

How to cleaning drones and fixing drones

If you are a fan of drones, please remember to maintain the drone and other component. Preventing the dust and dirt is a very crucial immediate step of you. Actually, there is small difference between it and for various design. So there is a special system, but there are some other methods to clean the drone and to make it in the best condition. Within the following, we would learn how to clean the drones. First, you should prepare a tool-kit, and put all the fixing, cleaning, maintenance stuff into it. Remember to match the stuff with the drone's brand and model.

The must-have tools for cleaning drones

1. a soft cleaning brush

This is for some corners and gaps, and you can also use the pipeline pigging.

2. canning compressed air

This can clean the dirt of some "sensitive parts" such as the electric motor or circuit board around, which would not damage the drones.

3. isopropyl alcohol

This can clean your drone shell in perfect condition, which can wipe out grass stains, blood stains and any other kind of dirt, and would not damage the circuit.

4. ultra-thin fiber cloth

If you want to completely clean the drone by dismantling it, it is necessary to use this cloth as it can perfectly match the isopropyl alcohol.

5. three-in-one all-purpose lubricant

Carry a bottle of three-in-one all-purpose lubricant in case of emergency.


The must-have tools to fix the drone


It is possible to have trouble while the drone is flying or landing. As it is a precise device, any tiny change would influence its flying status and longevity. Therefore, it is wise to prepare needed tools and carefully deal with the drone's failure.

1. spare bracket

the bracket is one of the most important components of flying the drone. Once it has trouble, the drone should land immediately and replace the original bracket with the spare one.

2. tool kit

Remember to prepare all kinds of tools that can fix all the possible troubles. Maybe your drone is too advanced to have trouble or there's a matched and attached tool kit when you buy the drone, but you still need to take a screw-drive.

3. soldering iron

while you would not take the soldering iron with you all the time, there would be not better than having a soldering iron when the electronic failure happens. Compared with the amateur, the professional pilots always take the soldering iron. However, if you have never used the soldering iron before, it's better to search help from your friends or watch the guide video.

4. spare battery

If your drone has available spare multicopter battery, please fully charge it.

The notes for the greenhands:

1. Please check whether the ground is spacious enough; whether your drone is in good condition; whether the switch of the remote control is flexible.
2. Keep your 16000mah lipo battery be in full charge.
3. Keep your drone clean.
4. Do not fly the drone for too long.
Source: http://www.genstattu.com/blog/how-to-cleaning-drones-and-fixing-drones/

2016年3月27日星期日

Ways to eradicate the battery memory impact

Ways to eradicate the battery memory impact


What's the battery memory result?

If the battery is nickel cadmium battery, long-term will not be complete charge and discharge,it easy to leave a mark within the battery, the battery capability, this phenomenon is called battery memory effect.That mean, it appears that battery memory consumer daily charge and discharge charge as well as mode, time is tough to modify this kind of mode, can no longer do significantly charging or discharging.Lithium-ion batteries, no such result.

The reason behind the battery memory result

Resulting from adverse really sintering form in the traditional system, cadmium coarser grains, if nickel cadmium battery recharge in advance of they may be totally discharge, cadmium grain effortlessly gathered into pieces and produce a 2s 7.4v lipo battery discharge kind secondary discharge platform.

Battery will retailer the discharge platform and it since the finish from the discharge within the subsequent cycle, despite the fact that the capability of the battery itself could be make the battery discharge to your decrease platform.During the procedure of following the discharge of battery will only do not forget that lower capability.Exactly the same in each use, any incomplete discharge will deepen this effect, make the capability with the battery is reduced.

The best way to do away with the battery memory result?

To remove the effect, there are two techniques, 1 will be to use tiny latest depth of discharge (including with 0.one C to 0 v) 1 is to use big latest charge and discharge (e.g., one C) several times.

In practice, the method of elimination of memory results have strict specs and an operating method. Improper operation will be counterproductive.

For nickel cadmium battery, the upkeep of usual is deep discharge on the standard basis: the common use to get a month (or thirty instances circulation) on the deep discharge (discharge to 1.0 V/each section, named the work out), popular use is usually to use photovoltaic cells or make use of the signifies which include shutdown can lower the formation of the memory effect, but this is not training, since the instrument (including cell phone) is not employed 1.0 V/only to flip it off everyday, has to be special gear or line to finish the do the job, but luckily a lot of nickel cadmium battery charger with this particular perform.

For no nickel cadmium 7.4v lipo battery to training for any extended time, as the cumulative memory impact, cannot reply in training capacity, you then will ought to deeper discharge (termed a recondition), this is often an incredibly small present to get a long time for every area to 0.4 V battery discharge of the procedure, want specialist equipment.

For nickel metal hydride batteries, exercise within the frequency of about as soon as each three months can properly alleviate the memory result. Since the cycle daily life of nimh battery is lower than that of nickel cadmium battery, with little recondition this strategy.

Suggestion one: each and every time there is no really need to charge the 14.8v lipo battery just before discharge, and it really is hazardous, for the reason that useless shorten the lifestyle with the battery.

Suggestion two: use a resistor connect would be the cathode with the battery discharge is just not desirable, cannot management recent, easy to 0 v, even result in series of battery cell polarity reversal

2016年2月21日星期日

How LiPo Battery Packs Are Sized

There are lipo battery sizes ranging from tiny one cell packs for micro flyers to mulit-cell batteries for large scale electric powered planes and heli's. The voltage and capacity of any size battery pack depends on the capacity of each cell and how they are wired together.

To understand how LiPo battery packs are sized, you need to have a basic understanding of voltage and capacity. If you're not that familiar with batteries, that's OK. Just think of voltage as the "muscle" and capacity as the "energy" of a battery. At firs, you should know what is the lipo battey voltage.

LiPo Cells in Series Increases Voltage



To build voltage, cells are added together in series. The voltage (muscle) of the LiPo battery pack will continue to increase as more and more cells are added in series.

Battery packs achieve the desired operating voltage by connecting several cells in series; each cell adds its voltage to the total terminal voltage. Parallel connection attains higher capacity for increased current handling; each cell adds to the ampere/hour (Ah) count.

Some packs may consist of a combination of serial and parallel connections. Laptop batteries commonly have four 3.7V Lipo cells in series to achieve 14.4V and two in parallel to boost the capacity from 2,400mAh to 4,800mAh. Such a configuration is called 4S2P, meaning four cells in series and two in parallel. Insulating foil between the cells prevents the conductive metallic skin from causing an electrical short.

When connecting cells in series, it is the other way around, where tight capacity tolerances (mAH) are HUGELY important, while voltages are not. For instance, a 2200mAH Gens ace 3s lipo can be connected in series with a 1S 2200mAH battery of the same age. the 2S battery is made up of 2 cells in series, and thus the whole system is like a 3S battery. However, again do not use different battery chemistries or capacities in this config. Also if you plan of charging or discharging at high currents, you will need to keep the batteries balanced since there is always a bit of play in the capacities of the cells and one cell will always die or charge faster than the others. In series, that is especially bad if nothing is done about it, it means the battery with the least capacitance will be stressed the most, causing it to become even worse and possibly damage it or destroy it! (it is a positive feedback loop or a chain reaction type effect). Just make sure to keep them balanced.

LiPo Cells in Parallel Increases Capacity

To build capacity, cells are added together in parallel. The capacity (energy) of the LiPo battery pack will continue to increase as more and more cells are added in parallel.

But the voltage (muscle) will NOT increase as cells are added in parallel.

Total Voltage = 3.7 V
Total Capacity =2100mAh + 2100mAh + 2100mAh = 6300mAh

With Gens ace 5000mah packs in parallel you would have one 3000mAh 20c pack. The C rating does not double like mAh in a parallel battery circuit. You can load up the batteries more in this configuration though. Where, individually, the 1500mAh 20C packs have a constant discharge rating of 30 amps, the "new" 3000mAh 20c pack has a constant discharge rating of 60 amps. 

Right Size Pack for Your RC model

Choosing the correct battery pack is as easy as 1-2-3. Most of the current LiPo battery packs of the countless manufacturers sport common dimensions meaning you can easily replace that gnarly NiMH pack with a super-duper LiPo battery. Many model manufacturers offer their own line of hop-up packs to switch from NiMH to LiPo with no problems. Often, when you look closely they offer some sort of 'hop-up' sections where they promote their products on their websites. Just have a look first and see what the model manufacturer has to offer. Most of the time you find optional battery packs very easy and you are also ensured that the pack(s) you buy fit your models chassis just right.

The next tricky part in choosing the correct pack are the overall dimensions of the battery. If the battery you want to replace is of the usual 7.2V Sub-C style than the alternatives are quite clear. You need a pack not longer as 140 mm, not wider as 46 mm and not thicker as 24 mm. These standard dimensions are featured by most battery packs and make swapping easy. If you need special batteries, for example for smaller 1/16 or 1/18 scale models than 85 x 29 x 17 mm are the numbers you need to take care of. But remember: what we tell here is just a rough guide line! Always double check with the actual batteries you use to make sure to order the correct items.

If you look for a battery pack to suit your monster or Short Course truck or even the new generation of 1/8 scale electric off-road buggies the choice is quite easy as these often have rectangular battery compartments. Just measure what the maximum dimensions of the battery compartment are (length/width/height) and have a go on whatever product suits your needs. When it comes to battery packs for the above models many manufacturers offer special solutions for trucks like the Traxxas E-Revo, Mini Revo etc. Again, just have a look around the specific websites and most of the time you will find what suits your needs.