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petak
studeni
2021
10 Advantages of Lithium Polymer Battery for Common Users
Lithium polymer batteries have the same technology that is used by liquid lithium ion batteries. In other words, the anode and cathode are of the same type. The only difference is that these units use aluminum plastic film and gel electrolytes. Therefore, these power packs are thinner and lighter but offer a higher density of energy. In this article, we are going to talk about 10 advantages of these power packs. Read on to find out more.
1. High Energy Density
Compared to nickel-hydride or nickel-cadmium, lithium-polymer batteries are 50% lighter. But they have the same degree of energy density, which makes them an ideal choice.
2. Thin Design
Liquid lithium-ion battery features a customized shell and positive/negative electrodes. And then there is a technical limit that doesn't allow the batteries to be thinner than 3.6mm. On the other hand, the polymer cells don't have any such limitations. Therefore, the thickness of these units can below 1mm.
3. Low Internal Resistance
Unlike liquid batteries, the polymer type has less internal resistance. Therefore, these batteries can help extend the time your applications can stay on standby mode. So, this is another great advantage of these units.
4. Customizable Shape
Based on demand, polymer batteries can be made thicker or thinner. For instance, for special smartphones, manufacturers may require thinner batteries. This can help get the most out of the available space and still enjoy long backup.
5. Good Charge/Discharge Rate
If you use the right type of charger, you can recharge these units in just two hours. Basically, polymer batteries make use of colloidal electrolytes that have a stable discharge rate, unlike liquid electrolytes.
6. High Voltage
A lithium-polymer cell has an operating voltage of 3.7v on average, which is equal to three nickel-hydride or nickel-cadmium ones connected in series.
7. High Safety and Performance
The outer shell of these batteries is made of aluminum plastic. On the other hand, liquid lithium ones come with a metal shell. Because of the flexible packaging, the deformation of the outer shell won't cause the battery to stop working.
8. Long Cycle Life
In normal circumstances, a lithium polymer battery tends to charge and discharge more than 500 times. Therefore, you can enjoy long cycle life if you opt for these powerhouses.
9. No Pollution
Also, lithium-polymer units don't contain harmful metals like mercury, lead, or cadmium. Therefore, they don't cause pollution unlike other types of units.
10. No Memory Effect
Nickel-cadmium batteries tend to lose their discharge with the passage of time. On the other hand, lithium-polymer ones have no such problem. This is also called the memory effect. With time, the market share of these power packs is rising because of the list of advantages these batteries offer.
Also, these batteries are used in power tools and laptops as well. Therefore, these are becoming quite popular as time goes by.
Long story short, these are just 10 of the most common advantages of Lithium polymer battery packs. Hopefully, this article will help you get a deeper insight into these units.
Are you looking for a Custom Li-Polymer Battery? If so, we suggest that you try out a great collection of these units at https://www.ludabattery.com/.
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Lipo Battery Pack Tutorial
So you want to go lipo?
Well you have made the big choice and now you need to know where to start. Well, the first thing to look at is the condition on your gearbox. This is going to be one of those times where you have to be very truthful with yourself. Is this gearbox in the best shape it can be? When was the last time you shimmed the gearbox? When did you last grease the gearbox? If you have not taken the time to make sure you have no noise or play in your gears take that time now. You will pay later when a subtle oscillation turns into a spinning gear of death and takes out your AEG in the middle of sustained fire if you don't.
While you are in the gearbox there are some other things you should look at. What gauge and quality is your wiring? If you are not at 16 or 18 gauge wire then take the time now and change it so that you have a big enough and strong enough pipe to push the new sustained voltage.
The C rating of a lithium polymer battery denotes how much current you can draw out of a pack at a continuous rate. Example:
1600mah 10c battery 1600mah/10000mah = 1.6ah 1.6ah x 10c = 16 amps
1000mah 20C Pack 1000mah/1000mah = 1ah, 1ah x 20c = 20 Amps
1500mah 25C Battery 1500mah/1000mah = 1.5ah, 1.5ah x 25c = 37.5 Amps
So the higher your discharge rate (C Rating) the more amperes you can push out continuously. Resulting in your motor being able to pull as much as it wants/can for a longer time. Most NIMH batteries are 10c.
You may also want to do an AOE (angle of engagement) correction. This involves totally readjusting the timing on your piston head and should not be performed if you do not fully feel confident.
First remove the second to last tooth on the piston. Then shim the piston head so that the piston lines up exactly with the first tooth on the sector gear. We have a guide HERE. You may also want to upgrade all the other fun parts that require you to have the gearbox and gun body open.
New stronger spring
New piston
New Piston Head
New air seal nozzle
New bucking
New inner barrel
Now this is no small amount of work.
Taking apart a gearbox and replacing a spring can be a daunting challenge depending on your level of skill but with time and the wonderful world wide web you can find step-by-step guides to disassemble and reassemble your gearbox. See our guide HERE.
Then we can talk about MOSFET. MOSFET is an electrical switch that (in simple terms) regulates voltage to your gearbox. You can wire one in, but if you go for a 7.4v it is only necessary for ROF regulation, but if you are going for the 11.1 then you really should put one in. Installation and operation are part-specific and come with detailed instructions.
Now that you have a new freshly shimmed tricked-out gearbox now what? You need to look at your connectors. Deans are one of the most popular connectors because they have a lower resistance than the standard mini Tamiya, and they are a soldered connection not a crimped, that is why many people switch to them. They do require solder but with a little time and patience that should be not problem for the average person. You can see a great guide HERE.
So now it comes down to the real deal 7.4 or 11.1. If you are confident in your work switching to an 11.1 is not a big deal but this is a higher voltage and a longer sustained amperage so this is for those who want the highest rate of fire. If you are just looking for a longer play time then 7.4v should get you a rate of fire in between a 8.4 and 9.6 and with the upgraded internals any AEG will handle a 7.4v lipo.
Plus we all know about air discharge. Nickel metal hydride batteries are great if you charge them the night before but you will have to charge them every time. There will always be a little "air discharge" but with Lithium, you get nearly none.
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